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NEWS.8.md: Update spacing for Markdown syntax. * NEWS.8.md: Update spacing for Markdown syntax.
author Rik <rik@octave.org>
date Thu, 17 Nov 2022 14:12:30 -0800
parents 0924234dd747
children 6544a361e5ca 45328547bc12
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1 Summary of important user-visible changes for version 8 (yyyy-mm-dd):
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2 ---------------------------------------------------------------------
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3
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4 ### General improvements
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5
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6 - Octave's libraries are now built using symbol visibility by default.
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7 That means that less symbols are exported from these libraries.
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8 Configure with `--disable-lib-visibility-flags` to export all symbols
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9 (as in previous versions).
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10
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11 - `filter` is now 5X faster, which also speeds up `deconv`, `fftfilt`
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12 and `arma_rnd` by the same amount.
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13
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14 - `integral` can now output a second argument passing the error
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15 measurement used by the underlying integrator.
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16
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17 - `perms` now accepts a second argument "unique" to return only unique
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18 permutations for inputs with repeated elements. It is faster and
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19 takes less memory to call `perms ('aaaabbbbcccc', "unique")` than to
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20 call `unique (perms ('aaaabbbbcccc'), "rows")`.
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21
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22 - `quadgk` can now accept the `ArrayValued` input parameter to handle
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23 array-valued input functions.
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24
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25 - `delaunayn` now has consistent trivial simplex checking and removal
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26 for all input dimensions, simplex checking 3D inputs is now
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27 vectorized, and >3D simplex checking performance has been improved.
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28 Simplexes points are now ordered so they will all have positive
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29 outward normal vectors. Input type checking has also been added for
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30 improved error handling.
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31
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32 - `factor` now factorizes all 64-bit integers in roughly the same time.
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33 Previously, the product of two large primes took much longer to factorize
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34 than highly composite inputs.
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35
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36 - `Refine` option is now implemented in functions `ode45`, `ode23`,
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37 and `ode23s`.
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38
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39 - Octave is now compatible to PCRE2 (UTF-8). PCRE2 is preferred over PCRE
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40 if both are installed. Configure with `--without-pcre2` if you prefer
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41 that Octave uses PCRE in this case.
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42
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43 ### Graphical User Interface
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44
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45
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46 ### Graphics backend
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47
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48 - When printing, the option `-svgconvert` is now the default. If you want to
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49 use the more limited EPS-based tool chain (the former default)&mdash;e.g., if
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50 you encounter inaccurate image rendering&mdash;you can pass the `-nosvgconvert`
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51 option to the `print` function.
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52
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53 - Additional properties have been added to the `figure` graphics object:
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54 * `"innerposition"` (equivalent to `"position"`)
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55 * `"windowstate"` (not yet implemented)
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56
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57 - Legend now features a new property `"itemhitfcn"`, allowing the
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58 execution of a callback function when a legend item is clicked.
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59
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60 ### Matlab compatibility
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61
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62 - `inline` functions now support all Matlab methods. The performance
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63 of `inline` functions has also been improved.
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64
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65 - `sub2ind` now supports index values outside of the size specified by
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66 the subscripts.
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67
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68 - `cylinder` now accepts a scalar for the radius argument.
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69
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70 - `clock` now has an optional second output `ISDST` which indicates if
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71 Daylight Savings Time is in effect for the system's time zone.
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72
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73 - `print` now accepts option `-image` to specify the "opengl" renderer
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74 and `-vector` to specify the "painters" renderer.
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76 - `format` now accepts the option "default", which is equivalent to
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77 calling `format` without any options to reset the default state.
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78
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79 - `quadgk` now stops iterating when `error <= tolerance` while the previous
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80 condition was `error < tolerance`.
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81
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82 - `mean` now accepts vector dimensions and options to handle `NaN` values.
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83 The option `"a"` (arithmetic mean), `"g"` (geometric mean), and `"h"`
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84 (harmonic mean) are no longer accepted, only the arithmetic mean is computed.
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85 For the geometric and harmonic mean, please use respective functions
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86 `geomean` and `harmmean` from the Octave Statistics package.
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87
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88 - `var` and `std` now optionally output a second argument containing the mean
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89 or weighted mean.
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91 - `integral` can now accept the 'ArrayValued' option in combination with
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92 'RelTol' and 'WayPoints'.
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94 - File system operations that remove files (e.g., `unlink` or `rmdir`) now also
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95 remove files that have their read-only file attribute set on Windows.
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96
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97 - The default state for certain graphics properties has been made
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98 consistent with Matlab.
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99
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100 Object | Property | Default State
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101 ------------|------------------|------------
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102 figure | "dockcontrols" | "on"
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103
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104 - `ode45`, `ode23`, and `ode23s` have improved results for options `Events`,
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105 `OutputFcn`, and `Refine`, along with corrected orientation of struct
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106 outputs.
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107
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108 ### Alphabetical list of new functions added in Octave 8
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109
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110 * `clearAllMemoizedCaches`
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111 * `matlab.lang.MemoizedFunction`
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112 * `memoize`
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113 * `normalize`
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114 * `pagectranspose`
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115 * `pagetranspose`
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116 * `uifigure`
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117
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118 ### Deprecated functions, properties, and operators
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119
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120 The following functions and properties have been deprecated in Octave 8
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121 and will be removed from Octave 10 (or whatever version is the second
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122 major release after 8):
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123
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124 - Functions
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125
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126 Function | Replacement
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127 -----------------------|------------------
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128 shift | circshift
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129 sparse_auto_mutate | none (see below)
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130
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131 - The `sparse_auto_mutate` function no longer has any effect on Octave's
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132 behavior. Previously, after calling `sparse_auto_mutate (true)`,
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133 Octave would automatically convert sparse matrices to full when a
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134 sparse matrix required more memory than simply using full matrix
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135 storage. This setting was `false` by default for compatibility with
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136 Matlab. Now you must manually convert to full storage when desired.
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137
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138 - Properties
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139
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140 The following property names are discouraged, but there is no fixed
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141 date for their removal.
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142
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143 Object | Property | Replacement
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144 -----------------|-------------|------------
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145 uimenu | label | text
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146 uimenu | callback | menuselectedfcn
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147
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148 The following functions were deprecated in Octave 6 and have been removed
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149 from Octave 8.
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150
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151 - Functions
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152
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153 Function | Replacement
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154 -------------|------------
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155 runtests | oruntests
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156
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157 - The environment variable used by `mkoctfile` for linker flags is now
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158 `LDFLAGS` rather than `LFLAGS`. `LFLAGS` was deprecated in Octave 6,
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159 and will be removed in a future version of Octave.
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160
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161 ### Old release news
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162
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163 - [Octave 7.x](etc/NEWS.7)
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164 - [Octave 6.x](etc/NEWS.6)
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165 - [Octave 5.x](etc/NEWS.5)
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166 - [Octave 4.x](etc/NEWS.4)
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167 - [Octave 3.x](etc/NEWS.3)
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168 - [Octave 2.x](etc/NEWS.2)
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169 - [Octave 1.x](etc/NEWS.1)