Mercurial > octave
annotate etc/NEWS.8.md @ 31892:fe1704313ec3 stable
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* configure.ac (AC_INIT): Set version to 8.1.1.
(OCTAVE_PATCH_VERSION): Now 1.
* NEWS.8.md: Create section for a future 8.2 release.
author | John W. Eaton <jwe@octave.org> |
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date | Tue, 07 Mar 2023 01:01:42 -0500 |
parents | 75b1efe727d4 |
children | 18e10e48f51e 0018557a53b2 |
rev | line source |
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1 Summary of bugs fixed for version 8.2.0 (yyyy-mm-dd): |
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2 ---------------------------------------------------- |
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3 |
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4 For (bug #XXXXX) see https://savannah.gnu.org/bugs/?XXXXX |
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5 |
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6 ### Improvements and fixes |
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7 |
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8 ### GUI |
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9 |
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10 ### Build system / Tests |
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11 |
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12 ### Documentation |
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13 |
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14 |
31890 | 15 Summary of important user-visible changes for version 8 (2023-03-07): |
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16 -------------------------------------------------------------------- |
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17 |
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18 ### General improvements |
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19 |
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20 - Octave's libraries are now built using symbol visibility by default. |
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21 That means that fewer symbols are exported from these libraries. |
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22 Configure with `--disable-lib-visibility-flags` to export all symbols |
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23 (as in previous versions). |
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24 |
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25 - `filter` is now 5X faster, which also speeds up `deconv`, `fftfilt` |
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26 and `arma_rnd` by the same amount. |
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27 |
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28 - `integral` can now output a second argument passing the error |
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29 measurement used by the underlying integrator. |
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30 |
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31 - `perms` now accepts a second argument "unique" to return only unique |
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32 permutations for inputs with repeated elements. It is faster and |
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33 takes less memory to call `perms ('aaaabbbbcccc', "unique")` than to |
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34 call `unique (perms ('aaaabbbbcccc'), "rows")`. |
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35 |
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36 - `quadgk` can now accept the `ArrayValued` input parameter to handle |
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37 array-valued input functions. |
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38 |
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39 - `delaunayn` now has consistent trivial simplex checking and removal |
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40 for all input dimensions, simplex checking 3D inputs is now |
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41 vectorized, and >3D simplex checking performance has been improved. |
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42 Simplexes points are now ordered so they will all have positive |
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43 outward normal vectors. Input type checking has also been added for |
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44 improved error handling. |
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45 |
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46 - `factor` now factorizes all 64-bit integers in roughly the same time. |
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47 Previously, the product of two large primes took much longer to factorize |
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48 than highly composite inputs. |
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49 |
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50 - `Refine` option is now implemented in functions `ode45`, `ode23`, |
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51 and `ode23s`. |
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52 |
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53 - Octave is now compatible with PCRE2 (UTF-8). PCRE2 is preferred over PCRE |
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54 if both are installed. Configure with `--without-pcre2` if you prefer Octave |
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55 to use PCRE in this case. |
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56 |
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57 - `mean` now internally processes data as type double to reduce liklihood of |
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58 hitting overflow or precision limits with other types (bug #63848). |
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59 |
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60 ### Graphical User Interface |
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61 |
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62 - The GUI has a dark style and several new icons in toolbars for better |
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63 visibility and higher contrast. |
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64 |
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65 - A new terminal widget has been added for the GUI. It is still experimental |
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66 and is disabled by default. It can be enabled with the command line |
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67 parameter `--experimental-terminal-widget`. |
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68 |
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69 - More fonts for the documentation browser are included. |
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70 |
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71 ### Graphics backend |
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72 |
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73 - When printing, the option `-svgconvert` is now the default. If you want to |
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74 use the more limited EPS-based tool chain (the former default)—e.g., if |
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75 you encounter inaccurate image rendering—you can pass the `-nosvgconvert` |
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76 option to the `print` function. |
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77 |
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78 - Additional properties have been added to the `figure` graphics object: |
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79 * `"innerposition"` (equivalent to `"position"`) |
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80 * `"windowstate"` (not yet implemented) |
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81 |
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82 - Legend now features a new property `"itemhitfcn"`, allowing the |
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83 execution of a callback function when a legend item is clicked. |
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84 |
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85 ### Matlab compatibility |
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86 |
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87 - `inline` functions now support all Matlab methods. The performance |
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88 of `inline` functions has also been improved. |
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89 |
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90 - `sub2ind` now supports index values outside of the size specified by |
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91 the subscripts. |
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92 |
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93 - `cylinder` now accepts a scalar for the radius argument. |
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94 |
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95 - `clock` now has an optional second output `ISDST` which indicates if |
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96 Daylight Savings Time is in effect for the system's time zone. |
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97 |
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98 - `print` now accepts option `-image` to specify the "opengl" renderer |
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99 and `-vector` to specify the "painters" renderer. |
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100 |
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101 - `format` now accepts the option "default", which is equivalent to |
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102 calling `format` without any options to reset the default state. |
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103 |
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104 - `quadgk` now stops iterating when `error <= tolerance` while the previous |
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105 condition was `error < tolerance`. |
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106 |
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107 - `mean` now accepts vector dimensions and options to handle `NaN` values. |
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108 The option `"a"` (arithmetic mean), `"g"` (geometric mean), and `"h"` |
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109 (harmonic mean) are no longer accepted, only the arithmetic mean is computed. |
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110 For the geometric and harmonic mean, please use respective functions |
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111 `geomean` and `harmmean` from the Octave Statistics package. |
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112 |
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113 - `var` and `std` now optionally output a second argument containing the mean |
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114 or weighted mean. |
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115 |
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117 'RelTol' and 'WayPoints'. |
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118 |
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120 remove files that have their read-only file attribute set on Windows. |
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121 |
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123 consistent with Matlab. |
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124 |
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125 Object | Property | Default State |
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126 ------------|------------------|------------ |
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127 figure | "dockcontrols" | "on" |
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128 |
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129 - `ode45`, `ode23`, and `ode23s` have improved results for options `Events`, |
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130 `OutputFcn`, and `Refine`, along with corrected orientation of struct |
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131 outputs. |
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132 |
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133 - *Early notice of future breaking changes*: Due to many user requests that |
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134 Octave should have a Matlab-compatible string class, there is work under way |
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135 to implement a string class that will differ from a vector of characters. In |
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136 Octave, single-quoted character arrays are currently compatible with Matlab, |
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137 but double-quoted forms are not. Currently in Octave, both 'foo' and "foo" |
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138 are largely interchangeable, barring certain escape sequence interpretations |
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139 such as "\n" (converted to a single newline character) as opposed to '\n' |
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140 (two separate characters). Matlab’s single-quoted character arrays and |
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141 double-quoted strings do not process backslash escape sequences, unlike many |
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142 other languages, and those escape sequences are instead processed by |
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143 individual functions such as `fprintf`. |
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144 |
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145 Octave's behavior is likely to change in future as a consequence of |
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146 implementing Matlab-style string syntax. For example, 'foo' will remain a |
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147 three-element character vector, but "foo" will become a single-element string |
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148 object. Some backslash escape sequences are likely to differ from their |
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149 current Octave behavior, but will achieve greater Matlab compatibility. The |
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150 exact implementation is a work in progress, and may or may not include |
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151 methods of preserving backward compatibility. |
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152 |
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153 *What this means for user code*: If your code currently relies on |
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154 double-quoted strings (e.g., "foo") representing character vectors as |
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155 opposed to string objects, and if you intend to update to a future version of |
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156 Octave incorporating the above changes, then consider replacing all |
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157 double-quoted strings with single-quoted strings in your code over time |
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158 (e.g., replace "foo" with 'foo'). Single-quoted strings are expected to |
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159 retain current behavior. Further, if your code relies on backslash escape |
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160 sequence interpretation in double-quoted strings (except for special cases |
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161 like the `printf` family), that code may need to change as well. |
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162 |
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163 ### Alphabetical list of new functions added in Octave 8 |
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164 |
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165 * `clearAllMemoizedCaches` |
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166 * `matlab.lang.MemoizedFunction` |
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167 * `memoize` |
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168 * `normalize` |
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169 * `pagectranspose` |
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170 * `pagetranspose` |
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172 |
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173 ### Deprecated functions, properties, and operators |
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174 |
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175 The following functions and properties have been deprecated in Octave 8 |
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176 and will be removed from Octave 10 (or whatever version is the second |
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177 major release after 8): |
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178 |
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179 - Functions |
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180 |
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181 Function | Replacement |
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182 -----------------------|------------------ |
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183 shift | circshift |
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184 sparse_auto_mutate | none (see below) |
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185 |
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186 - The `sparse_auto_mutate` function no longer has any effect on Octave's |
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187 behavior. Previously, after calling `sparse_auto_mutate (true)`, |
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188 Octave would automatically convert sparse matrices to full when a |
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189 sparse matrix required more memory than simply using full matrix |
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190 storage. This setting was `false` by default for compatibility with |
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191 Matlab. Now you must manually convert to full storage when desired. |
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192 |
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193 - Properties |
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194 |
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195 The following property names are discouraged, but there is no fixed |
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196 date for their removal. |
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197 |
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198 Object | Property | Replacement |
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199 -----------------|-------------|------------ |
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200 uimenu | label | text |
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201 uimenu | callback | menuselectedfcn |
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202 |
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203 The following functions were deprecated in Octave 6 and have been removed |
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204 from Octave 8. |
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205 |
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206 - Functions |
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207 |
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208 Function | Replacement |
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209 -------------|------------ |
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210 runtests | oruntests |
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211 |
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212 - The environment variable used by `mkoctfile` for linker flags is now |
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213 `LDFLAGS` rather than `LFLAGS`. `LFLAGS` was deprecated in Octave 6, |
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214 and will be removed in a future version of Octave. |
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215 |
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216 Summary of bugs fixed for version 8.1.0 (2023-01-22): |
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217 ---------------------------------------------------- |
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218 |
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219 - Improved input validation and/or output handling for `poly`, `pinv`, `patch`, |
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220 `fill`, `fill3`, `qp`, `datevec`, `textscan`, `sub2ind`, `qr`, `airy`, |
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221 `regexp`, `dec2bin`, `dec2hex`, `mean`, and many others. |
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222 - Improved performance for `complex`, `fftw`, `delaunayn`, `isfield`, `tsearch`, |
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223 sparse matrix exponentiation, other sparse operations, and many others. |
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224 - Overhauled `@audiorecorder` and `@audioplayer` classes. |
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225 |
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226 ### Old release news |
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227 |
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228 - [Octave 7.x](etc/NEWS.7) |
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229 - [Octave 6.x](etc/NEWS.6) |
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230 - [Octave 5.x](etc/NEWS.5) |
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231 - [Octave 4.x](etc/NEWS.4) |
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232 - [Octave 3.x](etc/NEWS.3) |
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233 - [Octave 2.x](etc/NEWS.2) |
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234 - [Octave 1.x](etc/NEWS.1) |