Mercurial > octave
annotate NEWS @ 16884:24574e15ac4b
NEWS: Add new functions debug_jit, jit_enable to list.
Re-order strsplit, colormap discussions to appear farther down.
author | Rik <rik@octave.org> |
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date | Sun, 30 Jun 2013 22:43:15 -0700 |
parents | 1aebb613a5ac |
children | 83425e536ce1 |
rev | line source |
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1 Summary of important user-visible changes for version 4.0: |
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2 --------------------------------------------------------- |
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3 |
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4 ** A new GUI is now available with Octave. |
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5 |
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6 ** Warning states may now be set temporarily, until the end of the |
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7 current function, using the syntax |
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8 |
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9 warning STATE ID "local" |
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10 |
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11 in which STATE may be "on", "off", or "error". Changes to warning |
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12 states that are set locally affect the current function and all |
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13 functions called from the current scope. The previous warning state |
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14 is restored on return from the current function. The "local" |
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15 option is ignored if used in the top-level workspace. |
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16 |
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rgbplot.m: Add new Matlab compatible function for plotting colormaps
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17 Summary of important user-visible changes for version 3.8: |
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18 --------------------------------------------------------- |
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19 |
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20 ** Octave now supports nested functions with scoping rules that are |
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21 compatible with Matlab. A nested function is one declared and defined |
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22 within the body of another function. The nested function is only |
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23 accessible from within the enclosing function which makes it one |
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24 method for making private functions whose names do not conflict with those |
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25 in the global namespace (See also subfunctions and private functions). |
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26 In addition, variables in the enclosing function are visible within the |
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27 nested function. This makes it possible to have a pseudo-global variable |
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28 which can be seen by a group of functions, but which is not visible in |
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29 the global namespace. |
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30 |
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31 Example: |
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32 function outerfunc (...) |
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33 ... |
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34 function nested1 (...) |
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35 ... |
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36 function nested2 (...) |
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37 ... |
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38 endfunction |
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39 endfunction |
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40 |
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41 function nested3 (...) |
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42 ... |
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43 endfunction |
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44 endfunction |
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45 |
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46 ** 'emptymatch', 'noemptymatch' options added to regular expressions. |
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47 |
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48 With this addition Octave now accepts the entire set of Matlab options |
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49 for regular expressions. 'noemptymatch' is the default, but 'emptymatch' |
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50 has certain uses where you need to match an assertion rather than actual |
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51 characters. For example, |
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52 |
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53 regexprep ('World', '^', 'Hello ', 'emptymatch') |
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54 => Hello World |
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55 |
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56 where the pattern is actually the assertion '^' or start-of-line. |
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57 |
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58 ** For compatibility with Matlab, the regexp, regexpi, and regexprep |
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59 functions now process backslash escape sequences in single-quoted pattern |
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60 strings. In addition, the regexprep function now processes backslash |
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61 escapes in single-quoted replacement strings. For example, |
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62 |
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63 regexprep (str, '\t', '\n') |
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64 |
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65 would search the variable str for a TAB character (escape sequence \t) |
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66 and replace it with a NEWLINE (escape sequence \n). Previously the |
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67 expression would have searched for a literal '\' followed by 't' and |
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68 replaced the two characters with the sequence '\', 'n'. |
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69 |
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70 ** Redundant terminal comma accepted by parser |
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71 |
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72 A redundant terminal comma is now accepted in matrix |
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73 definitions which allows writing code such as |
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74 |
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75 [a,... |
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76 b,... |
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77 c,... |
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78 ] = deal (1,2,3) |
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79 |
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80 ** Warning IDs renamed: |
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81 |
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82 Octave:array-as-scalar => Octave:array-to-scalar |
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83 Octave:array-as-vector => Octave:array-to-vector |
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84 |
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85 ** The m-files in the image directory have been overhauled. |
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86 |
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87 The principal benefit is that Octave will now no longer automatically |
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88 convert images stored with integers to doubles. Storing images as uint8 |
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89 or uint16 requires only 1/8 or 1/4 the memory of an image stored using |
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90 doubles. For certain operations, such as fft2, the image must still be |
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91 converted to double in order to work. |
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92 |
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93 Other changes include fixes to the way indexed images are read from a |
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94 colormap depending on the image class (integer images have a -1 offset to |
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95 the colormap row number). |
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96 |
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97 ** The colormap function now provides new options--"list", "register", |
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98 and "unregister"--to list all available colormap functions, and to |
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99 add or remove a function name from the list of known colormap |
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100 functions. Packages that implement extra colormaps should use these |
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101 commands with PKG_ADD and PKG_DEL statements. |
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102 |
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103 ** strsplit has been modified to be compatible with Matlab. There |
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104 are two instances where backward compatibility is broken. |
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105 |
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106 (1) Delimiters are now string vectors, not scalars. |
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107 |
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108 Octave's legacy behavior |
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109 |
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110 strsplit ("1 2, 3", ", ") |
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111 ans = |
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112 { |
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113 [1,1] = 1 |
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114 [1,2] = 2 |
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115 [1,3] = |
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116 [1,4] = 3 |
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117 } |
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118 |
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119 Matlab compatible behavior |
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120 |
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121 strsplit ("1 2, 3", ", ") |
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122 ans = |
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123 { |
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124 [1,1] = 1 2 |
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125 [1,2] = 3 |
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126 } |
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127 |
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128 (2) By default, Matlab treats consecutive delimiters are as a single |
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129 delimiter. By default, Octave's legacy behavior was to return an |
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130 empty string for the part between the delmiters. |
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131 |
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132 Where the legacy behavior is desired, the call to strsplit() may be |
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133 replaced by ostrsplit(), which is Octave's original implementation of |
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134 strsplit(). |
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135 |
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136 ** The datevec function has been extended for better Matlab compatibility. |
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137 It now accepts string inputs in the following numerical formats: 12, 21, |
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138 22, 26, 29, 31. This is undocumented, but verifiable, Matlab behavior. |
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139 In addition, the default for formats which do not specify a date is |
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140 January 1st of the current year. The previous default was the current day, |
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141 month, and year. This may produce changes in existing scripts. |
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142 |
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143 ** The error function and its derivatives has been extended to accept complex |
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144 arguments. The following functions now accept complex inputs: |
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145 |
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146 erf erfc erfcx |
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147 |
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148 In addition two new error functions erfi (imaginary error function) and |
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149 dawson (scaled imaginary error function) have been added. |
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150 |
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151 ** The default name of the Octave crash dump file is now called |
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152 octave-workspace instead of octave-core. |
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153 |
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154 ** A citation command has been added to display information on how to |
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155 cite Octave and packages in publications. The package system will |
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156 look for and install CITATION files from packages. |
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157 |
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158 ** The java package from Octave Forge is now part of core Octave. The |
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159 following new functions are available for interacting with Java |
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160 directly from Octave: |
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161 |
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162 debug_java java_matrix_autoconversion |
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163 isjava java_unsigned_autoconversion |
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164 java2mat javaaddpath |
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165 javaArray javaclasspath |
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166 javaMethod javamem |
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167 javaObject javarmpath |
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168 usejava |
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169 |
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170 In addition, the following functions that use the Java interface |
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171 are now available (provided that Octave is compiled with support for |
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172 Java enabled): |
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173 |
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174 helpdlg listdlg questdlg |
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175 inputdlg msgbox warndlg |
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176 |
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177 ** Other new functions added in 3.8.0: |
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178 |
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179 base64_decode ellipke lines |
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180 base64_encode erfcinv polyeig |
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181 betaincinv erfi readline_re_read_init_file |
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182 built_in_docstrings_file expint readline_read_init_file |
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183 cmpermute findfigs rgbplot |
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184 cmunique fminsearch save_default_options |
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185 colorcube gallery shrinkfaces |
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186 copyobj gco splinefit |
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187 dawson hdl2struct strjoin |
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188 dblist history_save struct2hdl |
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189 debug_jit importdata tetramesh |
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190 doc_cache_create iscolormap waterfall |
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191 ellipj jit_enable |
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192 |
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193 ** Deprecated functions. |
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194 |
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195 The following functions were deprecated in Octave 3.4 and have been |
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196 removed from Octave 3.8. |
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197 |
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198 autocor dispatch is_global setstr |
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199 autocov fstat krylovb strerror |
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200 betai gammai perror values |
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201 cellidx glpkmex replot |
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202 cquad is_duplicate_entry saveimage |
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203 |
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204 The following functions have been deprecated in Octave 3.8 and will |
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205 be removed from Octave 3.12 (or whatever version is the second major |
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206 release after 3.8): |
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207 |
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208 default_save_options java_set |
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209 gen_doc_cache java_unsigned_conversion |
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210 java_convert_matrix javafields |
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211 java_debug javamethods |
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212 java_get re_read_readline_init_file |
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213 java_invoke read_readline_init_file |
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214 java_new saving_history |
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215 |
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216 The following keywords have been deprecated in Octave 3.8 and will |
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217 be removed from Octave 3.12 (or whatever version is the second major |
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218 release after 3.8): |
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219 |
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220 static |
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221 |
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222 The following configuration variables have been deprecated in Octave |
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223 3.8 and will be removed from Octave 3.12 (or whatever version is the |
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224 second major release after 3.8): |
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225 |
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226 CC_VERSION (now GCC_VERSION) |
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227 CXX_VERSION (now GXX_VERSION) |
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228 |
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229 Summary of important user-visible changes for version 3.6: |
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230 --------------------------------------------------------- |
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231 |
14188 | 232 ** The PCRE library is now required to build Octave. If a pre-compiled |
233 package does not exist for your system, you can find PCRE sources | |
234 at http://www.pcre.org | |
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235 |
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236 ** The ARPACK library is no longer distributed with Octave. |
14188 | 237 If you need the eigs or svds functions you must provide an |
238 external ARPACK through a package manager or by compiling it | |
239 yourself. If a pre-compiled package does not exist for your system, | |
240 you can find the current ARPACK sources at | |
241 http://forge.scilab.org/index.php/p/arpack-ng | |
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242 |
14082 | 243 ** Many of Octave's binary operators (.*, .^, +, -, ...) now perform |
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244 automatic broadcasting for array operations which allows you to use |
14082 | 245 operator notation instead of calling bsxfun or expanding arrays (and |
246 unnecessarily wasting memory) with repmat or similar idioms. For | |
247 example, to scale the columns of a matrix by the elements of a row | |
248 vector, you may now write | |
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249 |
14082 | 250 rv .* M |
251 | |
252 In this expression, the number of elements of rv must match the | |
253 number of columns of M. The following operators are affected: | |
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254 |
14082 | 255 plus + .+ |
256 minus - .- | |
257 times .* | |
258 rdivide ./ | |
259 ldivide .\ | |
260 power .^ .** | |
261 lt < | |
262 le <= | |
263 eq == | |
264 gt > | |
265 ge >= | |
266 ne != ~= | |
267 and & | |
268 or | | |
269 atan2 | |
270 hypot | |
271 max | |
272 min | |
273 mod | |
274 rem | |
275 xor | |
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276 |
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277 additionally, since the A op= B assignment operators are equivalent |
14082 | 278 to A = A op B, the following operators are also affected: |
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279 |
14082 | 280 += -= .+= .-= .*= ./= .\= .^= .**= &= |= |
281 | |
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282 See the "Broadcasting" section in the new "Vectorization and Faster |
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283 Code Execution" chapter of the manual for more details. |
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284 |
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285 ** Octave now features a profiler, thanks to the work of Daniel Kraft |
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286 under the Google Summer of Code mentorship program. The manual has |
13262 | 287 been updated to reflect this addition. The new user-visible |
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288 functions are profile, profshow, and profexplore. |
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289 |
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290 ** Overhaul of statistical distribution functions |
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291 |
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292 Functions now return "single" outputs for inputs of class "single". |
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293 |
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294 75% reduction in memory usage through use of logical indexing. |
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295 |
14188 | 296 Random sample functions now use the same syntax as rand and accept |
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297 a comma separated list of dimensions or a dimension vector. |
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298 |
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299 Functions have been made Matlab-compatible with regard to special |
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300 cases (probability on boundaries, probabilities for values outside |
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301 distribution, etc.). This may cause subtle changes to existing |
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302 scripts. |
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303 |
14188 | 304 negative binomial function has been extended to real, non-integer |
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305 inputs. The discrete_inv function now returns v(1) for 0 instead of |
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306 NaN. The nbincdf function has been recoded to use a closed form |
14188 | 307 solution with betainc. |
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308 |
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309 ** strread, textscan, and textread have been completely revamped. |
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310 |
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311 They now support nearly all Matlab functionality including: |
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312 |
14082 | 313 * Matlab-compatible whitespace and delimiter defaults |
314 | |
315 * Matlab-compatible options: 'whitespace', treatasempty', format | |
316 string repeat count, user-specified comment style, uneven-length | |
317 output arrays, %n and %u conversion specifiers (provisionally) | |
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318 |
14082 | 319 ** All .m string functions have been modified for better performance or |
320 greater Matlab compatibility. Performance gains of 15X-30X have | |
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321 been demonstrated. Operations on cell array of strings no longer pay |
14082 | 322 quite as high a penalty as those on 2-D character arrays. |
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323 |
14082 | 324 deblank: Now requires character or cellstr input. |
325 | |
326 strtrim: Now requires character or cellstr input. | |
327 No longer trims nulls ("\0") from string for Matlab | |
328 compatibility. | |
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329 |
14082 | 330 strmatch: Follows documentation precisely and ignores trailing spaces |
331 in pattern and in string. Note that this is documented | |
332 Matlab behavior but the implementation apparently does | |
333 not always follow it. | |
334 | |
335 substr: Now possible to specify a negative LEN option which | |
336 extracts to within LEN of the end of the string. | |
337 | |
338 strtok: Now accepts cellstr input. | |
339 | |
340 base2dec, bin2dec, hex2dec: | |
341 Now accept cellstr inputs. | |
342 | |
343 dec2base, dec2bin, dec2hex: | |
344 Now accept cellstr inputs. | |
345 | |
346 index, rindex: | |
347 Now accept 2-D character array input. | |
348 | |
349 strsplit: Now accepts 2-D character array input. | |
13262 | 350 |
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351 ** Geometry functions derived from Qhull (convhull, delaunay, voronoi) |
14082 | 352 have been revamped. The options passed to the underlying qhull |
353 command have been changed for better results or for Matlab | |
354 compatibility. | |
355 | |
356 convhull: Default options are "Qt" for 2D, 3D, 4D inputs | |
357 Default options are "Qt Qx" for 5D and higher | |
358 | |
359 delaunay: Default options are "Qt Qbb Qc Qz" for 2D and 3D inputs | |
360 Default options are "Qt Qbb Qc Qx" for 4D and higher | |
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361 |
14082 | 362 voronoi: No default arguments |
363 | |
364 ** Date/Time functions updated. Millisecond support with FFF format | |
365 string now supported. | |
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366 |
14082 | 367 datestr: Numerical formats 21, 22, 29 changed to match Matlab. |
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368 Now accepts cellstr input. |
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369 |
14082 | 370 ** The following warning IDs have been removed: |
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371 |
14082 | 372 Octave:associativity-change |
373 Octave:complex-cmp-ops | |
374 Octave:empty-list-elements | |
375 Octave:fortran-indexing | |
376 Octave:precedence-change | |
377 | |
378 ** The warning ID Octave:string-concat has been renamed to | |
379 Octave:mixed-string-concat. | |
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380 |
14082 | 381 ** Octave now includes the following Matlab-compatible preference |
382 functions: | |
13262 | 383 |
14082 | 384 addpref getpref ispref rmpref setpref |
13262 | 385 |
14082 | 386 ** The following Matlab-compatible handle graphics functions have been |
387 added: | |
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388 |
14082 | 389 guidata uipanel uitoolbar |
390 guihandles uipushtool uiwait | |
391 uicontextmenu uiresume waitfor | |
392 uicontrol uitoggletool | |
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393 |
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394 The uiXXX functions above are experimental. |
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395 |
14082 | 396 Except for uiwait and uiresume, the uiXXX functions are not |
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397 supported with the FLTK+OpenGL graphics toolkit. |
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398 |
14082 | 399 The gnuplot graphics toolkit does not support any of the uiXXX |
400 functions nor the waitfor function. | |
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401 |
14082 | 402 ** New keyword parfor (parallel for loop) is now recognized as a valid |
403 keyword. Implementation, however, is still mapped to an ordinary | |
404 for loop. | |
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405 |
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406 ** Other new functions added in 3.6.0: |
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407 |
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408 bicg nthargout usejava |
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409 is_dq_string narginchk waitbar |
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410 is_sq_string python zscore |
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411 is_function_handle register_graphics_toolkit |
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412 loaded_graphics_toolkits recycle |
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413 |
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414 ** Deprecated functions. |
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415 |
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416 The following functions were deprecated in Octave 3.2 and have been |
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417 removed from Octave 3.6. |
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418 |
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419 create_set spcholinv splu |
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420 dmult spcumprod spmax |
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421 iscommand spcumsum spmin |
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422 israwcommand spdet spprod |
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423 lchol spdiag spqr |
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424 loadimage spfind spsum |
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425 mark_as_command sphcat spsumsq |
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426 mark_as_rawcommand spinv spvcat |
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427 spatan2 spkron str2mat |
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428 spchol splchol unmark_command |
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429 spchol2inv split unmark_rawcommand |
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430 |
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431 The following functions have been deprecated in Octave 3.6 and will |
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432 be removed from Octave 3.10 (or whatever version is the second major |
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433 release after 3.6): |
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434 |
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435 cut is_duplicate_entry |
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436 cor polyderiv |
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437 corrcoef shell_cmd |
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438 __error_text__ studentize |
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439 error_text sylvester_matrix |
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440 |
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441 ** The following functions have been modified for Matlab compatibility: |
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442 |
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443 randperm |
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444 |
13251 | 445 Summary of important user-visible changes for version 3.4.3: |
446 ----------------------------------------------------------- | |
447 | |
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448 ** Octave 3.4.3 is a bug fixing release. |
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449 |
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450 Summary of important user-visible changes for version 3.4.2: |
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451 ----------------------------------------------------------- |
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452 |
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453 ** Octave 3.4.2 fixes some minor installation problems that affected |
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454 version 3.4.1. |
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455 |
12709 | 456 Summary of important user-visible changes for version 3.4.1: |
457 ----------------------------------------------------------- | |
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458 |
12709 | 459 ** Octave 3.4.1 is primarily a bug fixing release. |
460 | |
461 ** IMPORTANT note about binary incompatibility in this release: | |
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462 |
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463 Binary compatibility for all 3.4.x releases was originally planned, |
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464 but this is impossible for the 3.4.1 release due to a bug in the way |
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465 shared libraries were built in Octave 3.4.0. Because of this bug, |
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466 .oct files built for Octave 3.4.0 must be recompiled before they |
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467 will work with Octave 3.4.1. |
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468 |
12709 | 469 Given that there would be binary incompatibilities with shared |
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470 libraries going from Octave 3.4.0 to 3.4.1, the following |
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471 incompatible changes were also made in this release: |
12709 | 472 |
473 * The Perl Compatible Regular Expression (PCRE) library is now | |
474 required to build Octave. | |
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475 |
12712 | 476 * Octave's libraries and .oct files are now installed in |
477 subdirectories of $libdir instead of $libexecdir. | |
478 | |
12709 | 479 Any future Octave 3.4.x release versions should remain binary |
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480 compatible with Octave 3.4.1 as proper library versioning is now |
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481 being used as recommended by the libtool manual. |
12709 | 482 |
483 ** The following functions have been deprecated in Octave 3.4.1 and will | |
484 be removed from Octave 3.8 (or whatever version is the second major | |
485 release after 3.4): | |
486 | |
487 cquad is_duplicate_entry perror strerror | |
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488 |
12709 | 489 ** The following functions are new in 3.4.1: |
490 | |
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491 colstyle gmres iscolumn isrow mgorth nproc rectangle |
12709 | 492 |
493 ** The get_forge_pkg function is now private. | |
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494 |
12709 | 495 ** The rectangle_lw, rectangle_sw, triangle_lw, and triangle_sw |
496 functions are now private. | |
497 | |
498 ** The logistic_regression_derivatives and logistic_regression_likelihood | |
499 functions are now private. | |
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500 |
12739 | 501 ** ChangeLog files in the Octave sources are no longer maintained |
502 by hand. Instead, there is a single ChangeLog file generated from | |
503 the Mercurial version control commit messages. Older ChangeLog | |
504 information can be found in the etc/OLD-ChangeLogs directory in the | |
505 source distribution. | |
506 | |
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507 Summary of important user-visible changes for version 3.4: |
9352 | 508 --------------------------------------------------------- |
509 | |
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510 ** BLAS and LAPACK libraries are now required to build Octave. The |
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511 subset of the reference BLAS and LAPACK libraries has been removed |
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512 from the Octave sources. |
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513 |
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514 ** The ARPACK library is now distributed with Octave so it no longer |
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515 needs to be available as an external dependency when building |
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516 Octave. |
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517 |
10118 | 518 ** The `lookup' function was extended to be more useful for |
519 general-purpose binary searching. Using this improvement, the | |
520 ismember function was rewritten for significantly better | |
521 performance. | |
9352 | 522 |
523 ** Real, integer and logical matrices, when used in indexing, will now | |
524 cache the internal index_vector value (zero-based indices) when | |
525 successfully used as indices, eliminating the conversion penalty for | |
10118 | 526 subsequent indexing by the same matrix. In particular, this means it |
527 is no longer needed to avoid repeated indexing by logical arrays | |
528 using find for performance reasons. | |
9888 | 529 |
10118 | 530 ** Logical matrices are now treated more efficiently when used as |
531 indices. Octave will keep the index as a logical mask unless the | |
532 ratio of true elements is small enough, using a specialized | |
533 code. Previously, all logical matrices were always first converted | |
534 to index vectors. This results in savings in both memory and | |
535 computing time. | |
9480 | 536 |
10118 | 537 ** The `sub2ind' and `ind2sub' functions were reimplemented as compiled |
538 functions for better performance. These functions are now faster, | |
539 can deliver more economized results for ranges, and can reuse the | |
540 index cache mechanism described in previous paragraph. | |
541 | |
542 ** The built-in function equivalents to associative operators (`plus', | |
543 `times', `mtimes', `and', and `or') have been extended to accept | |
544 multiple arguments. This is especially useful for summing | |
545 (multiplying, etc.) lists of objects (of possibly distinct types): | |
9408 | 546 |
9449 | 547 matrix_sum = plus (matrix_list{:}); |
548 | |
10118 | 549 ** An FTP object type based on libcurl has been implemented. These |
550 objects allow ftp connections, downloads and uploads to be | |
551 managed. For example, | |
9880 | 552 |
10118 | 553 fp = ftp ("ftp.octave.org); |
554 cd (fp, "gnu/octave"); | |
555 mget (fp, "octave-3.2.3.tar.bz2"); | |
556 close (fp); | |
9880 | 557 |
10118 | 558 ** The default behavior of `assert (observed, expected)' has been |
559 relaxed to employ less strict checking that does not require the | |
560 internals of the values to match. This avoids previously valid | |
561 tests from breaking due to new internal classes introduced in future | |
562 Octave versions. | |
9449 | 563 |
564 For instance, all of these assertions were true in Octave 3.0.x | |
565 but false in 3.2.x due to new optimizations and improvements: | |
566 | |
567 assert (2*linspace (1, 5, 5), 2*(1:5)) | |
568 assert (zeros (0, 0), []) | |
569 assert (2*ones (1, 5), (2) (ones (1,5))) | |
9462 | 570 |
10118 | 571 ** The behavior of library functions `ismatrix', `issquare', and |
572 `issymmetric' has been changed for better consistency. | |
9873 | 573 |
10292 | 574 * The `ismatrix' function now returns true for all numeric, |
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575 logical and character 2-D or N-D matrices. Previously, `ismatrix' |
10292 | 576 returned false if the first or second dimension was zero. |
577 Hence, `ismatrix ([])' was false, | |
578 while `ismatrix (zeros (1,2,0))' was true. | |
9873 | 579 |
10118 | 580 * The `issquare' function now returns a logical scalar, and is |
581 equivalent to the expression | |
582 | |
583 ismatrix (x) && ndims (x) == 2 && rows (x) == columns (x) | |
584 | |
585 The dimension is no longer returned. As a result, `issquare ([])' | |
586 now yields true. | |
9873 | 587 |
10118 | 588 * The `issymmetric' function now checks for symmetry instead of |
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589 Hermitianness. For the latter, ishermitian was created. Also, |
10118 | 590 logical scalar is returned rather than the dimension, so |
591 `issymmetric ([])' is now true. | |
9873 | 592 |
10118 | 593 ** Function handles are now aware of overloaded functions. If a |
594 function is overloaded, the handle determines at the time of its | |
595 reference which function to call. A non-overloaded version does not | |
596 need to exist. | |
9873 | 597 |
10118 | 598 ** Overloading functions for built-in classes (double, int8, cell, |
599 etc.) is now compatible with Matlab. | |
9408 | 600 |
10323 | 601 ** Function handles can now be compared with the == and != operators, |
602 as well as the `isequal' function. | |
603 | |
10118 | 604 ** Performance of concatenation (using []) and the functions `cat', |
605 `horzcat', and `vertcat' has been improved for multidimensional | |
606 arrays. | |
10117 | 607 |
9547 | 608 ** The operation-assignment operators +=, -=, *= and /= now behave more |
10118 | 609 efficiently in certain cases. For instance, if M is a matrix and S a |
610 scalar, then the statement | |
9547 | 611 |
10118 | 612 M += S; |
9547 | 613 |
10118 | 614 will operate on M's data in-place if it is not shared by another |
615 variable, usually increasing both time and memory efficiency. | |
9547 | 616 |
9558 | 617 Only selected common combinations are affected, namely: |
9547 | 618 |
619 matrix += matrix | |
620 matrix -= matrix | |
9558 | 621 matrix .*= matrix |
622 matrix ./= matrix | |
623 | |
9547 | 624 matrix += scalar |
625 matrix -= scalar | |
626 matrix *= scalar | |
627 matrix /= scalar | |
9558 | 628 |
9552 | 629 logical matrix |= logical matrix |
630 logical matrix &= logical matrix | |
9547 | 631 |
10118 | 632 where matrix and scalar belong to the same class. The left-hand |
633 side must be a simple variable reference. | |
9888 | 634 |
10118 | 635 Moreover, when unary operators occur in expressions, Octave will |
636 also try to do the operation in-place if it's argument is a | |
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637 temporary expression. |
9589 | 638 |
10118 | 639 ** The effect of comparison operators (<, >, <=, and >=) applied to |
640 complex numbers has changed to be consistent with the strict | |
641 ordering defined by the `max', `min', and `sort' functions. More | |
642 specifically, complex numbers are compared by lexicographical | |
643 comparison of the pairs `[abs(z), arg(z)]'. Previously, only real | |
14188 | 644 parts were compared; this can be trivially achieved by converting |
645 the operands to real values with the `real' function. | |
9547 | 646 |
10118 | 647 ** The automatic simplification of complex computation results has |
648 changed. Octave will now simplify any complex number with a zero | |
649 imaginary part or any complex matrix with all elements having zero | |
650 imaginary part to a real value. Previously, this was done only for | |
651 positive zeros. Note that the behavior of the complex function is | |
652 unchanged and it still produces a complex value even if the | |
653 imaginary part is zero. | |
9826 | 654 |
10118 | 655 ** As a side effect of code refactoring in liboctave, the binary |
656 logical operations are now more easily amenable to compiler | |
657 optimizations and are thus significantly faster. | |
9595 | 658 |
10118 | 659 ** Octave now allows user-defined `subsasgn' methods to optimize out |
660 redundant copies. For more information, see the manual. | |
9595 | 661 |
10453 | 662 ** More efficient matrix division handling. Octave is now able to |
10118 | 663 handle the expressions |
9664 | 664 |
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665 M' \ V |
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666 M.' \ V |
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667 V / M |
9664 | 668 |
10118 | 669 (M is a matrix and V is a vector) more efficiently in certain cases. |
670 In particular, if M is triangular, all three expressions will be | |
671 handled by a single call to xTRTRS (from LAPACK), with appropriate | |
10453 | 672 flags. Previously, all three expressions required a physical |
10118 | 673 transpose of M. |
9664 | 674 |
10118 | 675 ** More efficient handling of certain mixed real-complex matrix |
676 operations. For instance, if RM is a real matrix and CM a complex | |
677 matrix, | |
9664 | 678 |
10118 | 679 RM * CM |
9664 | 680 |
681 can now be evaluated either as | |
682 | |
683 complex (RM * real (CM), RM * imag (CM)) | |
684 | |
685 or as | |
686 | |
687 complex (RM) * CM, | |
688 | |
10453 | 689 depending on the dimensions. The first form requires more |
690 temporaries and copying, but halves the FLOP count, which normally | |
691 brings better performance if RM has enough rows. Previously, the | |
692 second form was always used. | |
9664 | 693 |
11111 | 694 Matrix division is similarly affected. |
9664 | 695 |
10118 | 696 ** More efficient handling of triangular matrix factors returned from |
697 factorizations. The functions for computing QR, LU and Cholesky | |
698 factorizations will now automatically return the triangular matrix | |
699 factors with proper internal matrix_type set, so that it won't need | |
700 to be computed when the matrix is used for division. | |
9717 | 701 |
10118 | 702 ** The built-in `sum' function now handles the non-native summation |
703 (i.e., double precision sum of single or integer inputs) more | |
704 efficiently, avoiding a temporary conversion of the whole input | |
705 array to doubles. Further, `sum' can now accept an extra option | |
706 argument, using a compensated summation algorithm rather than a | |
707 straightforward sum, which significantly improves precision if lots | |
708 of cancellation occurs in the summation. | |
9717 | 709 |
10118 | 710 ** The built-in `bsxfun' function now uses optimized code for certain |
711 cases where built-in operator handles are passed in. Namely, the | |
712 optimizations concern the operators `plus', `minus', `times', | |
713 `ldivide', `rdivide', `power', `and', `or' (for logical arrays), | |
714 the relational operators `eq', `ne', `lt', `le', `gt', `ge', and the | |
715 functions `min' and `max'. Optimizations only apply when both | |
716 operands are of the same built-in class. Mixed real/complex and | |
717 single/double operations will first convert both operands to a | |
718 common type. | |
9745 | 719 |
10118 | 720 ** The `strfind' and `strrep' functions now have compiled |
721 implementations, facilitating significantly more efficient searching | |
722 and replacing in strings, especially with longer patterns. The code | |
723 of `strcat' has been vectorized and is now much more efficient when | |
724 many strings are concatenated. The `strcmpi' and `strncmpi' | |
725 functions are now built-in functions, providing better performance. | |
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726 |
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727 ** 'str2double' now has a compiled implementation and the API conforms |
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728 to Matlab. The additional Octave-specific features of returning a |
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729 boolean matrix indicating which elements were successfully converted |
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730 has been removed. |
10208 | 731 |
10453 | 732 ** Matlab-style ignoring input and output function arguments using |
11111 | 733 tilde (~) is now supported. Ignored output arguments may be |
734 detected from a function using the built-in function `isargout'. | |
735 For more details, consult the manual. | |
10886 | 736 |
10453 | 737 ** The list datatype, deprecated since the introduction of cells, has |
738 been removed. | |
10276 | 739 |
10453 | 740 ** The accumarray function has been optimized and is now significantly |
741 faster in certain important cases. | |
10054 | 742 |
10292 | 743 ** The behavior of isreal and isnumeric functions was changed to be more |
744 Matlab-compatible. | |
745 | |
10406 | 746 ** The integer math & conversion warnings (Octave:int-convert-nan, |
747 Octave:int-convert-non-int-val, Octave:int-convert-overflow, | |
11111 | 748 Octave:int-math-overflow) have been removed. |
10406 | 749 |
10453 | 750 ** rem and mod are now built-in functions. They also handle integer |
751 types efficiently using integer arithmetic. | |
10437 | 752 |
10536 | 753 ** Sparse indexing and indexed assignment has been mostly rewritten. |
754 Since Octave uses compressed column storage for sparse matrices, | |
755 major attention is devoted to operations manipulating whole columns. | |
756 Such operations are now significantly faster, as well as some other | |
757 important cases. | |
758 | |
759 Further, it is now possible to pre-allocate a sparse matrix and | |
760 subsequently fill it by assignments, provided they meet certain | |
761 conditions. For more information, consult the `spalloc' function, | |
762 which is no longer a mere dummy. Consequently, nzmax and nnz are no | |
11111 | 763 longer always equal in Octave. Octave may also produce a matrix |
764 with nnz < nzmax as a result of other operations, so you should | |
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765 consistently use nnz unless you really want to use nzmax (i.e., the |
11111 | 766 space allocated for nonzero elements). |
10536 | 767 |
768 Sparse concatenation is also affected, and concatenating sparse | |
769 matrices, especially larger collections, is now significantly more | |
11111 | 770 efficient. This applies to both the [] operator and the |
10536 | 771 cat/vertcat/horzcat functions. |
772 | |
11111 | 773 ** It is now possible to optionally employ the xGESDD LAPACK drivers |
14188 | 774 for computing the singular value decomposition using svd, instead |
11111 | 775 of the default xGESVD, using the configuration pseudo-variable |
776 svd_driver. The xGESDD driver can be up to 6x times faster when | |
777 singular vectors are requested, but is reported to be somewhat less | |
10639 | 778 robust on highly ill-conditioned matrices. |
779 | |
780 ** Configuration pseudo-variables, such as page_screen_output or | |
781 confirm_recursive_rmdir (or the above mentioned svd_driver), now | |
782 accept a "local" option as second argument, requesting the change | |
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783 to be undone when the current function returns: |
10639 | 784 |
785 function [status, msg] = rm_rf (dir) | |
786 confirm_recursive_rmdir (false, "local"); | |
787 [status, msg] = rmdir (dir, "s"); | |
788 ... | |
789 endfunction | |
790 | |
791 Upon return, confirm_recursive_rmdir will be restored to the value | |
792 it had on entry to the function, even if there were subsequent | |
793 changes to the variable in function rm_rf or any of the functions | |
794 it calls. | |
795 | |
11111 | 796 ** pkg now accepts a -forge option for downloading and installing |
797 packages from Octave Forge automatically. For example, | |
10774 | 798 |
799 pkg install -forge general | |
800 | |
11111 | 801 will automatically download the latest release of the general |
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14082
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|
802 package and attempt to install it. No automatic resolving of |
11111 | 803 dependencies is provided. Further, |
10639 | 804 |
10774 | 805 pkg list -forge |
806 | |
807 can be used to list all available packages. | |
808 | |
12418
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|
809 ** The internal data representation of structs has been completely |
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|
810 rewritten to make certain optimizations feasible. The field data |
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811 can now be shared between structs with equal keys but different |
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812 dimensions or values, making operations that preserve the fields |
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|
813 faster. Economized storage is now used for scalar structs (just |
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|
814 like most other scalars), making their usage more |
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|
815 memory-efficient. Certain array-like operations on structs |
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|
816 (concatenation, uniform cellfun, num2cell) have gained a |
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|
817 significant speed-up. Additionally, the octave_scalar_map class |
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818 now provides a simpler interface to work with scalar structs within |
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|
819 a C++ DLD function. |
10639 | 820 |
12418
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|
821 ** Two new formats are available for displaying numbers: |
11111 | 822 |
12418
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|
823 format short eng |
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|
824 format long eng |
11111 | 825 |
12418
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|
826 Both display numbers in engineering notation, i.e., mantissa + |
b914e8125f1b
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|
827 exponent where the exponent is a multiple of 3. |
10776
062304bd692e
Update NEWS with description of new engineering format for numbers.
Rik <octave@nomad.inbox5.com>
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|
828 |
12418
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|
829 ** The following functions are new in Octave 3.4: |
12723
6ed1e0be181e
doc: Update NEWS with new functions for release 3.4.1
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|
830 accumdim erfcx nfields pqpnonneg uigetdir |
6ed1e0be181e
doc: Update NEWS with new functions for release 3.4.1
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|
831 bitpack fileread nth_element quadcc uigetfile |
6ed1e0be181e
doc: Update NEWS with new functions for release 3.4.1
Rik <octave@nomad.inbox5.com>
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|
832 bitunpack fminbnd onCleanup randi uiputfile |
6ed1e0be181e
doc: Update NEWS with new functions for release 3.4.1
Rik <octave@nomad.inbox5.com>
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|
833 blkmm fskipl pbaspect repelems uimenu |
6ed1e0be181e
doc: Update NEWS with new functions for release 3.4.1
Rik <octave@nomad.inbox5.com>
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|
834 cbrt ifelse pie3 reset whitebg |
6ed1e0be181e
doc: Update NEWS with new functions for release 3.4.1
Rik <octave@nomad.inbox5.com>
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|
835 curl ishermitian powerset rsf2csf |
6ed1e0be181e
doc: Update NEWS with new functions for release 3.4.1
Rik <octave@nomad.inbox5.com>
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|
836 chop isindex ppder saveas |
6ed1e0be181e
doc: Update NEWS with new functions for release 3.4.1
Rik <octave@nomad.inbox5.com>
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|
837 daspect luupdate ppint strread |
6ed1e0be181e
doc: Update NEWS with new functions for release 3.4.1
Rik <octave@nomad.inbox5.com>
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|
838 divergence merge ppjumps textread |
11109
41d18f6342f9
remove image_viewer function
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|
839 |
12418
b914e8125f1b
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|
840 ** Using the image function to view images with external programs such |
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|
841 as display, xv, and xloadimage is no longer supported. The |
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|
842 image_viewer function has also been removed. |
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|
843 |
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|
844 ** The behavior of struct assignments to non-struct values has been |
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|
845 changed. Previously, it was possible to overwrite an arbitrary |
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|
846 value: |
11109
41d18f6342f9
remove image_viewer function
John W. Eaton <jwe@octave.org>
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|
847 |
12418
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|
848 a = 1; |
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|
849 a.x = 2; |
10873 | 850 |
12418
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|
851 This is no longer possible unless a is an empty matrix or cell |
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|
852 array. |
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|
853 |
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|
854 ** The dlmread function has been extended to allow specifying a custom |
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|
855 value for empty fields. |
10829 | 856 |
12418
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|
857 ** The dlmread and dlmwrite functions have been modified to accept |
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|
858 file IDs (as returned by fopen) in addition to file names. |
11111 | 859 |
12418
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|
860 ** Octave can now optimize away the interpreter overhead of an |
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|
861 anonymous function handle, if the function simply calls another |
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|
862 function or handle with some of its parameters bound to certain |
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863 values. Example: |
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|
864 |
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|
865 f = @(x) sum (x, 1); |
10966 | 866 |
12418
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|
867 When f is called, the call is forwarded to @sum with the constant 1 |
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|
868 appended, and the anonymous function call does not occur on the |
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|
869 call stack. |
10829 | 870 |
12424 | 871 ** For compatibility with Matlab, mu2lin (x) is now equivalent to |
872 mu2lin (x, 0). | |
873 | |
874 ** The new function `history_control' may be used to control the way | |
875 command lines are added to the history list when Octave is using | |
876 readline for command-line editing. For example | |
877 | |
878 history_control ("ignoredups") | |
879 | |
880 tells Octave to avoid adding duplicate lines to the history list. | |
881 | |
882 ** Octave now uses the gnulib library for improved portability and to | |
883 avoid bugs in operating system functions. | |
884 | |
11112
8ea4cf59c41b
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|
885 ** Deprecated functions. |
8ea4cf59c41b
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|
886 |
8ea4cf59c41b
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|
887 The following functions were deprecated in Octave 3.0 and have been |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
888 removed from Octave 3.4. |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
889 |
8ea4cf59c41b
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11111
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changeset
|
890 beta_cdf geometric_pdf pascal_pdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
891 beta_inv geometric_rnd pascal_rnd |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
892 beta_pdf hypergeometric_cdf poisson_cdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
893 beta_rnd hypergeometric_inv poisson_inv |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
894 binomial_cdf hypergeometric_pdf poisson_pdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
895 binomial_inv hypergeometric_rnd poisson_rnd |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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|
896 binomial_pdf intersection polyinteg |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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|
897 binomial_rnd is_bool setstr |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
898 chisquare_cdf is_complex struct_contains |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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|
899 chisquare_inv is_list struct_elements |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
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|
900 chisquare_pdf is_matrix t_cdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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parents:
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diff
changeset
|
901 chisquare_rnd is_scalar t_inv |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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parents:
11111
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|
902 clearplot is_square t_pdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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|
903 clg is_stream t_rnd |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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diff
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|
904 com2str is_struct uniform_cdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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|
905 exponential_cdf is_symmetric uniform_inv |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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diff
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|
906 exponential_inv is_vector uniform_pdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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|
907 exponential_pdf isstr uniform_rnd |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
908 exponential_rnd lognormal_cdf weibcdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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|
909 f_cdf lognormal_inv weibinv |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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|
910 f_inv lognormal_pdf weibpdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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parents:
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|
911 f_pdf lognormal_rnd weibrnd |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
912 f_rnd meshdom weibull_cdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
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|
913 gamma_cdf normal_cdf weibull_inv |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
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|
914 gamma_inv normal_inv weibull_pdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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diff
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|
915 gamma_pdf normal_pdf weibull_rnd |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
916 gamma_rnd normal_rnd wiener_rnd |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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diff
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|
917 geometric_cdf pascal_cdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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diff
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|
918 geometric_inv pascal_inv |
8ea4cf59c41b
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parents:
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diff
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|
919 |
8ea4cf59c41b
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John W. Eaton <jwe@octave.org>
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diff
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|
920 The following functions were deprecated in Octave 3.2 and will |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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diff
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|
921 be removed from Octave 3.6 (or whatever version is the second major |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
922 release after 3.2): |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
923 |
11390
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
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|
924 create_set spcholinv splu |
7ca273af4309
Deprecate sphcat and spvcat functions.
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diff
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|
925 dmult spcumprod spmax |
7ca273af4309
Deprecate sphcat and spvcat functions.
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|
926 iscommand spcumsum spmin |
7ca273af4309
Deprecate sphcat and spvcat functions.
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diff
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|
927 israwcommand spdet spprod |
7ca273af4309
Deprecate sphcat and spvcat functions.
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diff
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|
928 lchol spdiag spqr |
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
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|
929 loadimage spfind spsum |
7ca273af4309
Deprecate sphcat and spvcat functions.
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|
930 mark_as_command sphcat spsumsq |
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
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diff
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|
931 mark_as_rawcommand spinv spvcat |
7ca273af4309
Deprecate sphcat and spvcat functions.
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diff
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|
932 spatan2 spkron str2mat |
7ca273af4309
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|
933 spchol splchol unmark_command |
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
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11330
diff
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|
934 spchol2inv split unmark_rawcommand |
11112
8ea4cf59c41b
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diff
changeset
|
935 |
8ea4cf59c41b
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
936 The following functions have been deprecated in Octave 3.4 and will |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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parents:
11111
diff
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|
937 be removed from Octave 3.8 (or whatever version is the second major |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
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|
938 release after 3.4): |
8ea4cf59c41b
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John W. Eaton <jwe@octave.org>
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11111
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|
939 |
14354
55bb8c902a4d
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|
940 autocor cellidx gammai is_global replot values |
55bb8c902a4d
maint: Remove deprecated functions from dev branch for next (3.8) release.
Rik <octave@nomad.inbox5.com>
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|
941 autocov dispatch glpkmex krylovb saveimage |
55bb8c902a4d
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Rik <octave@nomad.inbox5.com>
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|
942 betai fstat intwarning perror strerror |
11112
8ea4cf59c41b
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John W. Eaton <jwe@octave.org>
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diff
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|
943 |
7990
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Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
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diff
changeset
|
944 Summary of important user-visible changes for version 3.2: |
5913 | 945 --------------------------------------------------------- |
2452 | 946 |
8737 | 947 ** Compatibility with Matlab graphics has been improved. |
6329 | 948 |
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949 The hggroup object and associated listener callback functions have |
8737 | 950 been added allowing the inclusion of group objects. Data sources |
8070
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|
951 have been added to these group objects such that |
3b53b25e2550
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|
952 |
3b53b25e2550
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|
953 x = 0:0.1:10; |
3b53b25e2550
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|
954 y = sin (x); |
3b53b25e2550
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|
955 plot (x, y, "ydatasource", "y"); |
3b53b25e2550
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|
956 for i = 1 : 100 |
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|
957 pause(0.1) |
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|
958 y = sin (x + 0.1 * i); |
14188 | 959 refreshdata (); |
8070
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960 endfor |
3b53b25e2550
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diff
changeset
|
961 |
8737 | 962 works as expected. This capability has be used to introduce |
9031
1052a66078cf
Documentation cleanup of top-level Octave directory (READMEs, INSTALL)
Rik <rdrider0-list@yahoo.com>
parents:
8932
diff
changeset
|
963 stem-series, bar-series, etc., objects for better Matlab |
8737 | 964 compatibility. |
965 | |
966 ** New graphics functions: | |
967 | |
11576
8ac9687dbe9f
rename backend to graphics_toolkit
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|
968 addlistener ezcontour gcbo refresh |
8ac9687dbe9f
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parents:
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|
969 addproperty ezcontourf ginput refreshdata |
8ac9687dbe9f
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|
970 allchild ezmesh gtext specular |
8ac9687dbe9f
rename backend to graphics_toolkit
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parents:
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|
971 available_graphics_toolkits ezmeshc intwarning surfl |
8ac9687dbe9f
rename backend to graphics_toolkit
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parents:
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|
972 graphics_toolkit ezplot ishghandle trisurf |
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
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|
973 cla ezplot3 isocolors waitforbuttonpress |
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
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changeset
|
974 clabel ezpolar isonormals |
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
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|
975 comet ezsurf isosurface |
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
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diff
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|
976 dellistener findall linkprop |
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
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|
977 diffuse gcbf plotmatrix |
8070
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|
978 |
8737 | 979 ** New experimental OpenGL/FLTK based plotting system. |
980 | |
981 An experimental plotting system based on OpenGL and the FLTK | |
11576
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
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|
982 toolkit is now part of Octave. This graphics toolkit is disabled by |
8737 | 983 default. You can switch to using it with the command |
8070
3b53b25e2550
Add data sources and line series
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|
984 |
11576
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|
985 graphics_toolkit ("fltk") |
8070
3b53b25e2550
Add data sources and line series
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|
986 |
3b53b25e2550
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diff
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|
987 for all future figures or for a particular figure with the command |
3b53b25e2550
Add data sources and line series
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changeset
|
988 |
11576
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John W. Eaton <jwe@octave.org>
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11562
diff
changeset
|
989 graphics_toolkit (h, "fltk") |
8070
3b53b25e2550
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|
990 |
11139 | 991 where "h" is a valid figure handle. |
8070
3b53b25e2550
Add data sources and line series
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diff
changeset
|
992 |
8737 | 993 ** Functions providing direct access to gnuplot have been removed. |
994 | |
7990
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
995 The functions __gnuplot_plot__, __gnuplot_set__, __gnuplot_raw__, |
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
996 __gnuplot_show__, __gnuplot_replot__, __gnuplot_splot__, |
8737 | 997 __gnuplot_save_data__ and __gnuplot_send_inline_data__ have been |
998 removed from Octave. These function were incompatible with the | |
999 high level graphics handle code. | |
6329 | 1000 |
8885 | 1001 ** The Control, Finance and Quaternion functions have been removed. |
1002 | |
1003 These functions are now available as separate packages from | |
1004 | |
1005 http://octave.sourceforge.net/packages.html | |
1006 | |
1007 and can be reinstalled using the Octave package manager (see | |
1008 the pkg function). | |
1009 | |
1010 ** Specific sparse matrix functions removed. | |
1011 | |
1012 The following functions, which handled only sparse matrices have | |
1013 been removed. Instead of calling these functions directly, you | |
1014 should use the corresponding function without the "sp" prefix. | |
8737 | 1015 |
8885 | 1016 spatan2 spcumsum spkron spprod |
1017 spchol spdet splchol spqr | |
1018 spchol2inv spdiag splu spsum | |
1019 spcholinv spfind spmax spsumsqk | |
1020 spcumprod spinv spmin | |
1021 | |
1022 ** Improvements to the debugger. | |
1023 | |
1024 The interactive debugging features have been improved. Stopping | |
1025 on statements with dbstop should work correctly now. Stepping | |
1026 into and over functions, and stepping one statement at a time | |
1027 (with dbstep) now works. Moving up and down the call stack with | |
1028 dbup and dbdown now works. The dbstack function is now available | |
1029 to print the current function call stack. The new dbquit function | |
1030 is available to exit the debugging mode. | |
1031 | |
1032 ** Improved traceback error messages. | |
1033 | |
1034 Traceback error messages are much more concise and easier to | |
1035 understand. They now display information about the function call | |
1036 stack instead of the stack of all statements that were active at | |
1037 the point of the error. | |
8014
44d206ae68c9
improve fsolve compatibility
John W. Eaton <jwe@octave.org>
parents:
7990
diff
changeset
|
1038 |
8737 | 1039 ** Object Oriented Programming. |
8405
d79dfbff2f9d
document new norm features in NEWS
Jaroslav Hajek <highegg@gmail.com>
parents:
8396
diff
changeset
|
1040 |
8737 | 1041 Octave now includes OOP features and the user can create their own |
1042 class objects and overloaded functions and operators. For | |
1043 example, all methods of a class called "myclass" will be found in | |
1044 a directory "@myclass" on the users path. The class specific | |
1045 versions of functions and operators take precedence over the | |
1046 generic versions of these functions. | |
1047 | |
1048 New functions related to OOP include | |
7189 | 1049 |
8737 | 1050 class inferiorto isobject loadobj methods superiorto |
1051 | |
1052 See the Octave manual for more details. | |
7038 | 1053 |
8747 | 1054 ** Parsing of Command-style Functions. |
1055 | |
1056 Octave now parses command-style functions without needing to first | |
1057 declare them with "mark_as_command". The rules for recognizing a | |
1058 command-style function calls are | |
1059 | |
1060 * A command must appear as the first word in a statement, | |
1061 followed by a space. | |
1062 | |
1063 * The first character after the space must not be '=' or '(' | |
1064 | |
1065 * The next token after the space must not look like a binary | |
1066 operator. | |
1067 | |
1068 These rules should be mostly compatible with the way Matlab parses | |
1069 command-style function calls and allow users to define commands in | |
1070 .m files without having to mark them as commands. | |
1071 | |
1072 Note that previous versions of Octave allowed expressions like | |
1073 | |
1074 x = load -text foo.dat | |
1075 | |
1076 but an expression like this will now generate a parse error. In | |
1077 order to assign the value returned by a function to a variable, | |
1078 you must use the normal function call syntax: | |
1079 | |
1080 x = load ("-text", "foo.dat"); | |
1081 | |
8737 | 1082 ** Block comments. |
1083 | |
8747 | 1084 Commented code can be between matching "#{" and "#}" or "%{" and |
1085 "%}" markers, even if the commented code spans several line. This | |
1086 allows blocks code to be commented, without needing to comment | |
1087 each line. For example, | |
5814 | 1088 |
8747 | 1089 function [s, t] = func (x, y) |
1090 s = 2 * x; | |
1091 #{ | |
1092 s *= y; | |
1093 t = y + x; | |
1094 #} | |
7990
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
1095 endfunction |
5814 | 1096 |
8747 | 1097 the lines "s *= y;" and "t = y + x" will not be executed. |
8737 | 1098 |
12400
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
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diff
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|
1099 ** If any subfunction in a file ends with "end" or "endfunction", then |
5252f12537f8
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John W. Eaton <jwe@octave.org>
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diff
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|
1100 they all must end that way. Previously, Octave accepted |
5252f12537f8
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diff
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|
1101 |
5252f12537f8
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John W. Eaton <jwe@octave.org>
parents:
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diff
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|
1102 function main () |
5252f12537f8
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John W. Eaton <jwe@octave.org>
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diff
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|
1103 ... |
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
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parents:
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diff
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|
1104 # no endfunction here. |
5252f12537f8
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diff
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|
1105 function sub () |
5252f12537f8
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diff
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|
1106 ... |
5252f12537f8
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John W. Eaton <jwe@octave.org>
parents:
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diff
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|
1107 endfunction |
5252f12537f8
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diff
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|
1108 |
5252f12537f8
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diff
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|
1109 but this is no longer allowed. |
5252f12537f8
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diff
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|
1110 |
8737 | 1111 ** Special treatment in the parser of expressions like "a' * b". |
2452 | 1112 |
8737 | 1113 In these cases the transpose is no longer explicitly formed and |
1114 BLAS libraries are called with the transpose flagged, | |
1115 significantly improving performance for these kinds of | |
1116 operations. | |
8417
654bcfb937bf
Add the eigs and svds functions
David Bateman <dbateman@free.fr>
parents:
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diff
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|
1117 |
8737 | 1118 ** Single Precision data type. |
2452 | 1119 |
8737 | 1120 Octave now includes a single precision data type. Single |
1121 precision variables can be created with the "single" command, or | |
9034
52515efc50c0
Documentation cleanup on NEWS file
Rik <rdrider0-list@yahoo.com>
parents:
9031
diff
changeset
|
1122 from functions like ones, eye, etc. For example, |
5995 | 1123 |
8737 | 1124 single (1) |
1125 ones (2, 2, "single") | |
1126 zeros (2, 2, "single") | |
1127 eye (2, 2, "single") | |
1128 Inf (2, 2, "single") | |
1129 NaN (2, 2, "single") | |
1130 NA (2, 2, "single") | |
7279 | 1131 |
8737 | 1132 all create single precision variables. For compatibility with |
1133 Matlab, mixed double/single precision operators and functions | |
1134 return single precision types. | |
1135 | |
1136 As a consequence of this addition to Octave the internal | |
7990
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
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|
1137 representation of the double precision NA value has changed, and |
86dae6e5b83c
Initial update of NEWS for 3.2 release
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7279
diff
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|
1138 so users that make use of data generated by Octave with R or |
86dae6e5b83c
Initial update of NEWS for 3.2 release
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7279
diff
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|
1139 visa-versa are warned that compatibility might not be assured. |
7279 | 1140 |
8737 | 1141 ** Improved array indexing. |
1142 | |
1143 The underlying code used for indexing of arrays has been | |
9034
52515efc50c0
Documentation cleanup on NEWS file
Rik <rdrider0-list@yahoo.com>
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diff
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|
1144 completely rewritten and indexing is now significantly faster. |
8737 | 1145 |
8755 | 1146 ** Improved memory management. |
1147 | |
1148 Octave will now attempt to share data in some cases where previously | |
1149 a copy would be made, such as certain array slicing operations or | |
9031
1052a66078cf
Documentation cleanup of top-level Octave directory (READMEs, INSTALL)
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parents:
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diff
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|
1150 conversions between cells, structs and cs-lists. This usually reduces |
8755 | 1151 both time and memory consumption. |
9128 | 1152 Also, Octave will now attempt to detect and optimize usage of a vector |
1153 as a stack, when elements are being repeatedly inserted at/removed from | |
1154 the end of the vector. | |
8755 | 1155 |
8738 | 1156 ** Improved performance for reduction operations. |
1157 | |
8755 | 1158 The performance of the sum, prod, sumsq, cumsum, cumprod, any, all, |
1159 max and min functions has been significantly improved. | |
8738 | 1160 |
9006 | 1161 ** Sorting and searching. |
1162 | |
1163 The performance of sort has been improved, especially when sorting | |
10453 | 1164 indices are requested. An efficient built-in issorted |
1165 implementation was added. The sortrows function now uses a more | |
12702
013cd94d8d7f
doc: Spelling fixes for various documentation files
John Bradshaw <john@johnbradshaw.org>
parents:
12698
diff
changeset
|
1166 efficient algorithm, especially in the homogeneous case. The lookup |
10453 | 1167 function is now a built-in function performing a binary search, |
1168 optimized for long runs of close elements. Lookup also works with | |
1169 cell arrays of strings. | |
9006 | 1170 |
1171 ** Range arithmetics | |
1172 | |
10453 | 1173 For some operations on ranges, Octave will attempt to keep the |
1174 result as a range. These include negation, adding a scalar, | |
14093
050bc580cb60
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Rik <octave@nomad.inbox5.com>
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14082
diff
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|
1175 subtracting a scalar, and multiplying by a scalar. Ranges with zero |
10453 | 1176 increment are allowed and can be constructed using the built-in |
1177 function `ones'. | |
9006 | 1178 |
1179 ** Various performance improvements. | |
1180 | |
10453 | 1181 Performance of a number of other built-in operations and functions |
1182 was improved, including: | |
9006 | 1183 |
1184 * logical operations | |
1185 * comparison operators | |
1186 * element-wise power | |
1187 * accumarray | |
1188 * cellfun | |
1189 * isnan | |
1190 * isinf | |
1191 * isfinite | |
1192 * nchoosek | |
1193 * repmat | |
1194 * strcmp | |
1195 | |
8737 | 1196 ** 64-bit integer arithmetic. |
1197 | |
1198 Arithmetic with 64-bit integers (int64 and uint64 types) is fully | |
1199 supported, with saturation semantics like the other integer types. | |
1200 Performance of most integer arithmetic operations has been | |
1201 improved by using integer arithmetic directly. Previously, Octave | |
1202 performed integer math with saturation semantics by converting the | |
1203 operands to double precision, performing the operation, and then | |
1204 converting the result back to an integer value, truncating if | |
1205 necessary. | |
1206 | |
8885 | 1207 ** Diagonal and permutation matrices. |
1208 | |
1209 The interpreter can now treat diagonal and permutation matrices as | |
1210 special objects that store only the non-zero elements, rather than | |
1211 general full matrices. Therefore, it is now possible to construct | |
1212 and use these matrices in linear algebra without suffering a | |
1213 performance penalty due to storing large numbers of zero elements. | |
1214 | |
1215 ** Improvements to fsolve. | |
1216 | |
1217 The fsolve function now accepts an option structure argument (see | |
1218 also the optimset function). The INFO values returned from fsolve | |
1219 have changed to be compatible with Matlab's fsolve function. | |
1220 Additionally, fsolve is now able to solve overdetermined systems, | |
1221 complex-differentiable complex systems, systems with a sparse | |
1222 jacobian and can work in single precision if given single precision | |
9031
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diff
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|
1223 inputs. It can also be called recursively. |
8885 | 1224 |
8737 | 1225 ** Improvements to the norm function. |
1226 | |
1227 The norm function is now able to compute row or column norms of a | |
1228 matrix in a single call, as well as general matrix p-norms. | |
1229 | |
1230 ** New functions for computing some eigenvalues or singular values. | |
1231 | |
1232 The eigs and svds functions have been included in Octave. These | |
1233 functions require the ARPACK library (now distributed under a | |
1234 GPL-compatible license). | |
1235 | |
1236 ** New QR and Cholesky factorization updating functions. | |
8370
34960ba08a81
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Jaroslav Hajek <highegg@gmail.com>
parents:
8292
diff
changeset
|
1237 |
8737 | 1238 choldelete cholshift qrdelete qrshift |
1239 cholinsert cholupdate qrinsert qrupdate | |
1240 | |
1241 ** New quadrature functions. | |
1242 | |
1243 dblquad quadgk quadv triplequad | |
1244 | |
8885 | 1245 ** New functions for reading and writing images. |
1246 | |
1247 The imwrite and imread functions have been included in Octave. | |
1248 These functions require the GraphicsMagick library. The new | |
1249 function imfinfo provides information about an image file (size, | |
1250 type, colors, etc.) | |
1251 | |
9215
1500d0197484
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9128
diff
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|
1252 ** The input_event_hook function has been replaced by the pair of |
1500d0197484
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9128
diff
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|
1253 functions add_input_event_hook and remove_input_event_hook so that |
1500d0197484
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9128
diff
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|
1254 more than one hook function may be installed at a time. |
1500d0197484
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9128
diff
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|
1255 |
8737 | 1256 ** Other miscellaneous new functions. |
8370
34960ba08a81
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Jaroslav Hajek <highegg@gmail.com>
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1257 |
8932
2d0f8692a82e
Add the 'histc' function
Soren Hauberg <hauberg@gmail.com>
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1258 addtodate hypot reallog |
2d0f8692a82e
Add the 'histc' function
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1259 bicgstab idivide realpow |
9006 | 1260 cellslices info realsqrt |
1261 cgs interp1q rectint | |
1262 command_line_path isdebugmode regexptranslate | |
1263 contrast isfloat restoredefaultpath | |
1264 convn isstrprop roundb | |
1265 cummin log1p rundemos | |
1266 cummax lsqnonneg runlength | |
1267 datetick matlabroot saveobj | |
1268 display namelengthmax spaugment | |
1269 expm1 nargoutchk strchr | |
1270 filemarker pathdef strvcat | |
1271 fstat perl subspace | |
1272 full prctile symvar | |
1273 fzero quantile treelayout | |
1274 genvarname re_read_readline_init_file validatestring | |
1275 histc | |
8370
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1276 |
8885 | 1277 ** Changes to strcat. |
1278 | |
1279 The strcat function is now compatible with Matlab's strcat | |
1280 function, which removes trailing whitespace when concatenating | |
1281 character strings. For example | |
1282 | |
1283 strcat ('foo ', 'bar') | |
1284 ==> 'foobar' | |
1285 | |
1286 The new function cstrcat provides the previous behavior of | |
1287 Octave's strcat. | |
1288 | |
1289 ** Improvements to the help functions. | |
1290 | |
9034
52515efc50c0
Documentation cleanup on NEWS file
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1291 The help system has been mostly re-implemented in .m files to make |
8885 | 1292 it easier to modify. Performance of the lookfor function has been |
1293 greatly improved by caching the help text from all functions that | |
1294 are distributed with Octave. The pkg function has been modified | |
1295 to generate cache files for external packages when they are | |
1296 installed. | |
1297 | |
8888
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1298 ** Deprecated functions. |
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1299 |
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John W. Eaton <jwe@octave.org>
parents:
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1300 The following functions were deprecated in Octave 3.0 and will be |
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1301 removed from Octave 3.4 (or whatever version is the second major |
8888
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|
1302 release after 3.0): |
0c7b0049c023
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1303 |
11112
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1304 beta_cdf geometric_pdf pascal_pdf |
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1305 beta_inv geometric_rnd pascal_rnd |
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|
1306 beta_pdf hypergeometric_cdf poisson_cdf |
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parents:
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|
1307 beta_rnd hypergeometric_inv poisson_inv |
8ea4cf59c41b
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John W. Eaton <jwe@octave.org>
parents:
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|
1308 binomial_cdf hypergeometric_pdf poisson_pdf |
8ea4cf59c41b
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parents:
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changeset
|
1309 binomial_inv hypergeometric_rnd poisson_rnd |
8ea4cf59c41b
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parents:
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changeset
|
1310 binomial_pdf intersection polyinteg |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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parents:
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1311 binomial_rnd is_bool setstr |
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|
1312 chisquare_cdf is_complex struct_contains |
8ea4cf59c41b
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|
1313 chisquare_inv is_list struct_elements |
8ea4cf59c41b
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John W. Eaton <jwe@octave.org>
parents:
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|
1314 chisquare_pdf is_matrix t_cdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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|
1315 chisquare_rnd is_scalar t_inv |
8ea4cf59c41b
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John W. Eaton <jwe@octave.org>
parents:
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|
1316 clearplot is_square t_pdf |
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parents:
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|
1317 clg is_stream t_rnd |
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parents:
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|
1318 com2str is_struct uniform_cdf |
8ea4cf59c41b
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parents:
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|
1319 exponential_cdf is_symmetric uniform_inv |
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1320 exponential_inv is_vector uniform_pdf |
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1321 exponential_pdf isstr uniform_rnd |
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1322 exponential_rnd lognormal_cdf weibcdf |
8ea4cf59c41b
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1323 f_cdf lognormal_inv weibinv |
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1324 f_inv lognormal_pdf weibpdf |
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1325 f_pdf lognormal_rnd weibrnd |
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1326 f_rnd meshdom weibull_cdf |
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1327 gamma_cdf normal_cdf weibull_inv |
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1328 gamma_inv normal_inv weibull_pdf |
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1329 gamma_pdf normal_pdf weibull_rnd |
8ea4cf59c41b
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1330 gamma_rnd normal_rnd wiener_rnd |
8888
0c7b0049c023
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1331 geometric_cdf pascal_cdf |
0c7b0049c023
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1332 geometric_inv pascal_inv |
0c7b0049c023
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|
1333 |
0c7b0049c023
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|
1334 The following functions are now deprecated in Octave 3.2 and will |
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1335 be removed from Octave 3.6 (or whatever version is the second major |
8888
0c7b0049c023
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|
1336 release after 3.2): |
0c7b0049c023
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1337 |
0c7b0049c023
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|
1338 create_set spcholinv spmax |
0c7b0049c023
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|
1339 dmult spcumprod spmin |
0c7b0049c023
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|
1340 iscommand spcumsum spprod |
0c7b0049c023
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1341 israwcommand spdet spqr |
0c7b0049c023
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1342 lchol spdiag spsum |
0c7b0049c023
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|
1343 loadimage spfind spsumsq |
0c7b0049c023
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1344 mark_as_command spinv str2mat |
0c7b0049c023
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|
1345 mark_as_rawcommand spkron unmark_command |
0c7b0049c023
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parents:
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|
1346 spatan2 splchol unmark_rawcommand |
0c7b0049c023
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|
1347 spchol split |
0c7b0049c023
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|
1348 spchol2inv splu |
0c7b0049c023
mark create_set as deprecated in 3.2, not 3.0
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changeset
|
1349 |
7990
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
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7279
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changeset
|
1350 See NEWS.3 for old news. |