Mercurial > hg > octave-jordi
annotate NEWS @ 15043:fabc0e37ead1 gui
maint: periodic merge of default to gui
| author | Jordi Gutiérrez Hermoso <jordigh@octave.org> |
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| date | Sat, 28 Jul 2012 12:06:34 -0400 |
| parents | 3a05cb67dea5 0ba7be7fed1c |
| children | 1c711a646fa7 |
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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 Summary of important user-visible changes for version 3.8: |
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7 --------------------------------------------------------- |
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8 |
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9 ** Octave now supports nested functions with scoping rules that are |
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10 compatible with Matlab. A nested function is one declared and defined |
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11 within the body of another function. The nested function is only |
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12 accessible from within the enclosing function which makes it one |
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13 method for making private functions whose names do not conflict with those |
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14 in the global namespace (See also subfunctions and private functions). |
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15 In addition, variables in the enclosing function are visible within the |
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16 nested function. This makes it possible to have a pseudo-global variable |
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17 which can be seen by a group of functions, but which is not visible in |
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18 the global namespace. |
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19 |
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20 Example: |
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21 function outerfunc (...) |
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22 ... |
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23 function nested1 (...) |
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24 ... |
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25 function nested2 (...) |
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26 ... |
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27 endfunction |
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28 endfunction |
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29 |
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30 function nested3 (...) |
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31 ... |
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32 endfunction |
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33 endfunction |
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34 |
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35 ** 'emptymatch', 'noemptymatch' options added to regular expressions. |
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36 |
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37 With this addition Octave now accepts the entire set of Matlab options |
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38 for regular expressions. 'noemptymatch' is the default, but 'emptymatch' |
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39 has certain uses where you need to match an assertion rather than actual |
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40 characters. For example, |
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41 |
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42 regexprep ('World', '^', 'Hello ', 'emptymatch') |
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43 => Hello World |
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44 |
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45 where the pattern is actually the assertion '^' or start-of-line. |
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46 |
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47 ** For compatibility with Matlab, the regexp, regexpi, and regexprep |
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48 functions now process backslash escapes in single-quoted pattern |
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49 strings. In addition, the regexprep function now processes backslash |
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50 escapes in single-quoted replacement strings. |
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51 |
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52 ** Redundant terminal comma accepted by parser |
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53 |
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54 A redundant terminal comma is now accepted in matrix |
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55 definitions which allows writing code such as |
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56 |
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57 [a,... |
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58 b,... |
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59 c,... |
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60 ] = deal (1,2,3) |
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61 |
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62 ** Warning IDs renamed: |
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63 |
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64 Octave:array-as-scalar => Octave:array-to-scalar |
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65 Octave:array-as-vector => Octave:array-to-vector |
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66 |
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67 ** The colormap function now provides new options--"list", "register", |
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68 and "unregister"--to list all available colormap functions, and to |
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69 add or remove a function name from the list of known colormap |
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70 functions. Packages that implement extra colormaps should use these |
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71 commands with PKG_ADD and PKG_DEL statements. |
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72 |
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73 ** The datevec function has been extended for better Matlab compatibility. |
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74 It now accepts string inputs in the following numerical formats: 12, 21, |
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75 22, 26, 29, 31. This is undocumented, but verifiable, Matlab behavior. |
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76 In addition, the default for formats which do not specify a date is |
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77 January 1st of the current year. The previous default was the current day, |
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78 month, and year. This may produce changes in existing scripts. |
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79 |
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80 ** Other new functions added in 3.8.0: |
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81 |
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82 betaincinv erfcinv splinefit |
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83 cmpermute findfigs tetramesh |
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84 cmunique fminsearch rgbplot |
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85 colorcube lines shrinkfaces |
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86 |
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87 ** The default name of the Octave crash dump file is now called |
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88 octave-workspace instead of octave-core. |
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89 |
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90 ** Deprecated functions. |
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91 |
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92 The following functions were deprecated in Octave 3.4 and have been |
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93 removed from Octave 3.8. |
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94 |
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95 autocor dispatch is_global strerror |
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96 autocov fstat krylovb values |
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97 betai gammai perror |
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98 cellidx glpkmex replot |
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99 cquad is_duplicate_entry saveimage |
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100 |
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101 The following functions have been deprecated in Octave 3.8 and will |
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102 be removed from Octave 3.12 (or whatever version is the second major |
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103 release after 3.8): |
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104 |
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105 <none yet> |
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106 |
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107 The following keywords have been deprecated in Octave 3.8 and will |
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108 be removed from Octave 3.12 (or whatever version is the second major |
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109 release after 3.8): |
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110 |
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111 static |
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112 |
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113 Summary of important user-visible changes for version 3.6: |
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114 --------------------------------------------------------- |
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115 |
| 14188 | 116 ** The PCRE library is now required to build Octave. If a pre-compiled |
| 117 package does not exist for your system, you can find PCRE sources | |
| 118 at http://www.pcre.org | |
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119 |
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120 ** The ARPACK library is no longer distributed with Octave. |
| 14188 | 121 If you need the eigs or svds functions you must provide an |
| 122 external ARPACK through a package manager or by compiling it | |
| 123 yourself. If a pre-compiled package does not exist for your system, | |
| 124 you can find the current ARPACK sources at | |
| 125 http://forge.scilab.org/index.php/p/arpack-ng | |
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126 |
| 14082 | 127 ** Many of Octave's binary operators (.*, .^, +, -, ...) now perform |
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128 automatic broadcasting for array operations which allows you to use |
| 14082 | 129 operator notation instead of calling bsxfun or expanding arrays (and |
| 130 unnecessarily wasting memory) with repmat or similar idioms. For | |
| 131 example, to scale the columns of a matrix by the elements of a row | |
| 132 vector, you may now write | |
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133 |
| 14082 | 134 rv .* M |
| 135 | |
| 136 In this expression, the number of elements of rv must match the | |
| 137 number of columns of M. The following operators are affected: | |
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138 |
| 14082 | 139 plus + .+ |
| 140 minus - .- | |
| 141 times .* | |
| 142 rdivide ./ | |
| 143 ldivide .\ | |
| 144 power .^ .** | |
| 145 lt < | |
| 146 le <= | |
| 147 eq == | |
| 148 gt > | |
| 149 ge >= | |
| 150 ne != ~= | |
| 151 and & | |
| 152 or | | |
| 153 atan2 | |
| 154 hypot | |
| 155 max | |
| 156 min | |
| 157 mod | |
| 158 rem | |
| 159 xor | |
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160 |
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161 additionally, since the A op= B assignment operators are equivalent |
| 14082 | 162 to A = A op B, the following operators are also affected: |
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163 |
| 14082 | 164 += -= .+= .-= .*= ./= .\= .^= .**= &= |= |
| 165 | |
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166 See the "Broadcasting" section in the new "Vectorization and Faster |
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167 Code Execution" chapter of the manual for more details. |
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168 |
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169 ** Octave now features a profiler, thanks to the work of Daniel Kraft |
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170 under the Google Summer of Code mentorship program. The manual has |
| 13262 | 171 been updated to reflect this addition. The new user-visible |
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172 functions are profile, profshow, and profexplore. |
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173 |
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174 ** Overhaul of statistical distribution functions |
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175 |
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176 Functions now return "single" outputs for inputs of class "single". |
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177 |
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178 75% reduction in memory usage through use of logical indexing. |
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179 |
| 14188 | 180 Random sample functions now use the same syntax as rand and accept |
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181 a comma separated list of dimensions or a dimension vector. |
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182 |
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183 Functions have been made Matlab-compatible with regard to special |
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184 cases (probability on boundaries, probabilities for values outside |
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185 distribution, etc.). This may cause subtle changes to existing |
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186 scripts. |
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187 |
| 14188 | 188 negative binomial function has been extended to real, non-integer |
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189 inputs. The discrete_inv function now returns v(1) for 0 instead of |
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190 NaN. The nbincdf function has been recoded to use a closed form |
| 14188 | 191 solution with betainc. |
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192 |
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193 ** strread, textscan, and textread have been completely revamped. |
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194 |
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195 They now support nearly all Matlab functionality including: |
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196 |
| 14082 | 197 * Matlab-compatible whitespace and delimiter defaults |
| 198 | |
| 199 * Matlab-compatible options: 'whitespace', treatasempty', format | |
| 200 string repeat count, user-specified comment style, uneven-length | |
| 201 output arrays, %n and %u conversion specifiers (provisionally) | |
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202 |
| 14082 | 203 ** All .m string functions have been modified for better performance or |
| 204 greater Matlab compatibility. Performance gains of 15X-30X have | |
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205 been demonstrated. Operations on cell array of strings no longer pay |
| 14082 | 206 quite as high a penalty as those on 2-D character arrays. |
|
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207 |
| 14082 | 208 deblank: Now requires character or cellstr input. |
| 209 | |
| 210 strtrim: Now requires character or cellstr input. | |
| 211 No longer trims nulls ("\0") from string for Matlab | |
| 212 compatibility. | |
|
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213 |
| 14082 | 214 strmatch: Follows documentation precisely and ignores trailing spaces |
| 215 in pattern and in string. Note that this is documented | |
| 216 Matlab behavior but the implementation apparently does | |
| 217 not always follow it. | |
| 218 | |
| 219 substr: Now possible to specify a negative LEN option which | |
| 220 extracts to within LEN of the end of the string. | |
| 221 | |
| 222 strtok: Now accepts cellstr input. | |
| 223 | |
| 224 base2dec, bin2dec, hex2dec: | |
| 225 Now accept cellstr inputs. | |
| 226 | |
| 227 dec2base, dec2bin, dec2hex: | |
| 228 Now accept cellstr inputs. | |
| 229 | |
| 230 index, rindex: | |
| 231 Now accept 2-D character array input. | |
| 232 | |
| 233 strsplit: Now accepts 2-D character array input. | |
| 13262 | 234 |
|
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235 ** Geometry functions derived from Qhull (convhull, delaunay, voronoi) |
| 14082 | 236 have been revamped. The options passed to the underlying qhull |
| 237 command have been changed for better results or for Matlab | |
| 238 compatibility. | |
| 239 | |
| 240 convhull: Default options are "Qt" for 2D, 3D, 4D inputs | |
| 241 Default options are "Qt Qx" for 5D and higher | |
| 242 | |
| 243 delaunay: Default options are "Qt Qbb Qc Qz" for 2D and 3D inputs | |
| 244 Default options are "Qt Qbb Qc Qx" for 4D and higher | |
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245 |
| 14082 | 246 voronoi: No default arguments |
| 247 | |
| 248 ** Date/Time functions updated. Millisecond support with FFF format | |
| 249 string now supported. | |
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250 |
| 14082 | 251 datestr: Numerical formats 21, 22, 29 changed to match Matlab. |
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252 Now accepts cellstr input. |
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253 |
| 14082 | 254 ** The following warning IDs have been removed: |
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255 |
| 14082 | 256 Octave:associativity-change |
| 257 Octave:complex-cmp-ops | |
| 258 Octave:empty-list-elements | |
| 259 Octave:fortran-indexing | |
| 260 Octave:precedence-change | |
| 261 | |
| 262 ** The warning ID Octave:string-concat has been renamed to | |
| 263 Octave:mixed-string-concat. | |
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264 |
| 14082 | 265 ** Octave now includes the following Matlab-compatible preference |
| 266 functions: | |
| 13262 | 267 |
| 14082 | 268 addpref getpref ispref rmpref setpref |
| 13262 | 269 |
| 14082 | 270 ** The following Matlab-compatible handle graphics functions have been |
| 271 added: | |
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272 |
| 14082 | 273 guidata uipanel uitoolbar |
| 274 guihandles uipushtool uiwait | |
| 275 uicontextmenu uiresume waitfor | |
| 276 uicontrol uitoggletool | |
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277 |
|
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278 The uiXXX functions above are experimental. |
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279 |
| 14082 | 280 Except for uiwait and uiresume, the uiXXX functions are not |
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281 supported with the FLTK+OpenGL graphics toolkit. |
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282 |
| 14082 | 283 The gnuplot graphics toolkit does not support any of the uiXXX |
| 284 functions nor the waitfor function. | |
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285 |
| 14082 | 286 ** New keyword parfor (parallel for loop) is now recognized as a valid |
| 287 keyword. Implementation, however, is still mapped to an ordinary | |
| 288 for loop. | |
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289 |
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290 ** Other new functions added in 3.6.0: |
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291 |
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292 bicg nthargout usejava |
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293 is_dq_string narginchk waitbar |
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294 is_sq_string python zscore |
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295 is_function_handle register_graphics_toolkit |
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296 loaded_graphics_toolkits recycle |
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297 |
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298 ** Deprecated functions. |
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299 |
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300 The following functions were deprecated in Octave 3.2 and have been |
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301 removed from Octave 3.6. |
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302 |
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303 create_set spcholinv splu |
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304 dmult spcumprod spmax |
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305 iscommand spcumsum spmin |
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306 israwcommand spdet spprod |
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307 lchol spdiag spqr |
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308 loadimage spfind spsum |
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309 mark_as_command sphcat spsumsq |
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310 mark_as_rawcommand spinv spvcat |
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311 spatan2 spkron str2mat |
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312 spchol splchol unmark_command |
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313 spchol2inv split unmark_rawcommand |
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314 |
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315 The following functions have been deprecated in Octave 3.6 and will |
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316 be removed from Octave 3.10 (or whatever version is the second major |
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317 release after 3.6): |
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318 |
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319 cut is_duplicate_entry |
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320 cor polyderiv |
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321 corrcoef shell_cmd |
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322 __error_text__ studentize |
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323 error_text sylvester_matrix |
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324 |
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325 ** The following functions have been modified for Matlab compatibility: |
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326 |
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327 randperm |
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328 |
| 13251 | 329 Summary of important user-visible changes for version 3.4.3: |
| 330 ----------------------------------------------------------- | |
| 331 | |
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332 ** Octave 3.4.3 is a bug fixing release. |
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333 |
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334 Summary of important user-visible changes for version 3.4.2: |
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335 ----------------------------------------------------------- |
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336 |
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337 ** Octave 3.4.2 fixes some minor installation problems that affected |
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338 version 3.4.1. |
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339 |
| 12709 | 340 Summary of important user-visible changes for version 3.4.1: |
| 341 ----------------------------------------------------------- | |
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342 |
| 12709 | 343 ** Octave 3.4.1 is primarily a bug fixing release. |
| 344 | |
| 345 ** IMPORTANT note about binary incompatibility in this release: | |
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346 |
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347 Binary compatibility for all 3.4.x releases was originally planned, |
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348 but this is impossible for the 3.4.1 release due to a bug in the way |
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349 shared libraries were built in Octave 3.4.0. Because of this bug, |
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350 .oct files built for Octave 3.4.0 must be recompiled before they |
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351 will work with Octave 3.4.1. |
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352 |
| 12709 | 353 Given that there would be binary incompatibilities with shared |
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354 libraries going from Octave 3.4.0 to 3.4.1, the following |
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355 incompatible changes were also made in this release: |
| 12709 | 356 |
| 357 * The Perl Compatible Regular Expression (PCRE) library is now | |
| 358 required to build Octave. | |
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359 |
| 12712 | 360 * Octave's libraries and .oct files are now installed in |
| 361 subdirectories of $libdir instead of $libexecdir. | |
| 362 | |
| 12709 | 363 Any future Octave 3.4.x release versions should remain binary |
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364 compatible with Octave 3.4.1 as proper library versioning is now |
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365 being used as recommended by the libtool manual. |
| 12709 | 366 |
| 367 ** The following functions have been deprecated in Octave 3.4.1 and will | |
| 368 be removed from Octave 3.8 (or whatever version is the second major | |
| 369 release after 3.4): | |
| 370 | |
| 371 cquad is_duplicate_entry perror strerror | |
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372 |
| 12709 | 373 ** The following functions are new in 3.4.1: |
| 374 | |
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375 colstyle gmres iscolumn isrow mgorth nproc rectangle |
| 12709 | 376 |
| 377 ** The get_forge_pkg function is now private. | |
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378 |
| 12709 | 379 ** The rectangle_lw, rectangle_sw, triangle_lw, and triangle_sw |
| 380 functions are now private. | |
| 381 | |
| 382 ** The logistic_regression_derivatives and logistic_regression_likelihood | |
| 383 functions are now private. | |
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384 |
| 12739 | 385 ** ChangeLog files in the Octave sources are no longer maintained |
| 386 by hand. Instead, there is a single ChangeLog file generated from | |
| 387 the Mercurial version control commit messages. Older ChangeLog | |
| 388 information can be found in the etc/OLD-ChangeLogs directory in the | |
| 389 source distribution. | |
| 390 | |
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391 Summary of important user-visible changes for version 3.4: |
| 9352 | 392 --------------------------------------------------------- |
| 393 | |
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394 ** BLAS and LAPACK libraries are now required to build Octave. The |
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395 subset of the reference BLAS and LAPACK libraries has been removed |
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396 from the Octave sources. |
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397 |
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398 ** The ARPACK library is now distributed with Octave so it no longer |
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399 needs to be available as an external dependency when building |
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400 Octave. |
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401 |
| 10118 | 402 ** The `lookup' function was extended to be more useful for |
| 403 general-purpose binary searching. Using this improvement, the | |
| 404 ismember function was rewritten for significantly better | |
| 405 performance. | |
| 9352 | 406 |
| 407 ** Real, integer and logical matrices, when used in indexing, will now | |
| 408 cache the internal index_vector value (zero-based indices) when | |
| 409 successfully used as indices, eliminating the conversion penalty for | |
| 10118 | 410 subsequent indexing by the same matrix. In particular, this means it |
| 411 is no longer needed to avoid repeated indexing by logical arrays | |
| 412 using find for performance reasons. | |
| 9888 | 413 |
| 10118 | 414 ** Logical matrices are now treated more efficiently when used as |
| 415 indices. Octave will keep the index as a logical mask unless the | |
| 416 ratio of true elements is small enough, using a specialized | |
| 417 code. Previously, all logical matrices were always first converted | |
| 418 to index vectors. This results in savings in both memory and | |
| 419 computing time. | |
| 9480 | 420 |
| 10118 | 421 ** The `sub2ind' and `ind2sub' functions were reimplemented as compiled |
| 422 functions for better performance. These functions are now faster, | |
| 423 can deliver more economized results for ranges, and can reuse the | |
| 424 index cache mechanism described in previous paragraph. | |
| 425 | |
| 426 ** The built-in function equivalents to associative operators (`plus', | |
| 427 `times', `mtimes', `and', and `or') have been extended to accept | |
| 428 multiple arguments. This is especially useful for summing | |
| 429 (multiplying, etc.) lists of objects (of possibly distinct types): | |
| 9408 | 430 |
| 9449 | 431 matrix_sum = plus (matrix_list{:}); |
| 432 | |
| 10118 | 433 ** An FTP object type based on libcurl has been implemented. These |
| 434 objects allow ftp connections, downloads and uploads to be | |
| 435 managed. For example, | |
| 9880 | 436 |
| 10118 | 437 fp = ftp ("ftp.octave.org); |
| 438 cd (fp, "gnu/octave"); | |
| 439 mget (fp, "octave-3.2.3.tar.bz2"); | |
| 440 close (fp); | |
| 9880 | 441 |
| 10118 | 442 ** The default behavior of `assert (observed, expected)' has been |
| 443 relaxed to employ less strict checking that does not require the | |
| 444 internals of the values to match. This avoids previously valid | |
| 445 tests from breaking due to new internal classes introduced in future | |
| 446 Octave versions. | |
| 9449 | 447 |
| 448 For instance, all of these assertions were true in Octave 3.0.x | |
| 449 but false in 3.2.x due to new optimizations and improvements: | |
| 450 | |
| 451 assert (2*linspace (1, 5, 5), 2*(1:5)) | |
| 452 assert (zeros (0, 0), []) | |
| 453 assert (2*ones (1, 5), (2) (ones (1,5))) | |
| 9462 | 454 |
| 10118 | 455 ** The behavior of library functions `ismatrix', `issquare', and |
| 456 `issymmetric' has been changed for better consistency. | |
| 9873 | 457 |
| 10292 | 458 * The `ismatrix' function now returns true for all numeric, |
|
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459 logical and character 2-D or N-D matrices. Previously, `ismatrix' |
| 10292 | 460 returned false if the first or second dimension was zero. |
| 461 Hence, `ismatrix ([])' was false, | |
| 462 while `ismatrix (zeros (1,2,0))' was true. | |
| 9873 | 463 |
| 10118 | 464 * The `issquare' function now returns a logical scalar, and is |
| 465 equivalent to the expression | |
| 466 | |
| 467 ismatrix (x) && ndims (x) == 2 && rows (x) == columns (x) | |
| 468 | |
| 469 The dimension is no longer returned. As a result, `issquare ([])' | |
| 470 now yields true. | |
| 9873 | 471 |
| 10118 | 472 * The `issymmetric' function now checks for symmetry instead of |
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473 Hermitianness. For the latter, ishermitian was created. Also, |
| 10118 | 474 logical scalar is returned rather than the dimension, so |
| 475 `issymmetric ([])' is now true. | |
| 9873 | 476 |
| 10118 | 477 ** Function handles are now aware of overloaded functions. If a |
| 478 function is overloaded, the handle determines at the time of its | |
| 479 reference which function to call. A non-overloaded version does not | |
| 480 need to exist. | |
| 9873 | 481 |
| 10118 | 482 ** Overloading functions for built-in classes (double, int8, cell, |
| 483 etc.) is now compatible with Matlab. | |
| 9408 | 484 |
| 10323 | 485 ** Function handles can now be compared with the == and != operators, |
| 486 as well as the `isequal' function. | |
| 487 | |
| 10118 | 488 ** Performance of concatenation (using []) and the functions `cat', |
| 489 `horzcat', and `vertcat' has been improved for multidimensional | |
| 490 arrays. | |
| 10117 | 491 |
| 9547 | 492 ** The operation-assignment operators +=, -=, *= and /= now behave more |
| 10118 | 493 efficiently in certain cases. For instance, if M is a matrix and S a |
| 494 scalar, then the statement | |
| 9547 | 495 |
| 10118 | 496 M += S; |
| 9547 | 497 |
| 10118 | 498 will operate on M's data in-place if it is not shared by another |
| 499 variable, usually increasing both time and memory efficiency. | |
| 9547 | 500 |
| 9558 | 501 Only selected common combinations are affected, namely: |
| 9547 | 502 |
| 503 matrix += matrix | |
| 504 matrix -= matrix | |
| 9558 | 505 matrix .*= matrix |
| 506 matrix ./= matrix | |
| 507 | |
| 9547 | 508 matrix += scalar |
| 509 matrix -= scalar | |
| 510 matrix *= scalar | |
| 511 matrix /= scalar | |
| 9558 | 512 |
| 9552 | 513 logical matrix |= logical matrix |
| 514 logical matrix &= logical matrix | |
| 9547 | 515 |
| 10118 | 516 where matrix and scalar belong to the same class. The left-hand |
| 517 side must be a simple variable reference. | |
| 9888 | 518 |
| 10118 | 519 Moreover, when unary operators occur in expressions, Octave will |
| 520 also try to do the operation in-place if it's argument is a | |
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521 temporary expression. |
| 9589 | 522 |
| 10118 | 523 ** The effect of comparison operators (<, >, <=, and >=) applied to |
| 524 complex numbers has changed to be consistent with the strict | |
| 525 ordering defined by the `max', `min', and `sort' functions. More | |
| 526 specifically, complex numbers are compared by lexicographical | |
| 527 comparison of the pairs `[abs(z), arg(z)]'. Previously, only real | |
| 14188 | 528 parts were compared; this can be trivially achieved by converting |
| 529 the operands to real values with the `real' function. | |
| 9547 | 530 |
| 10118 | 531 ** The automatic simplification of complex computation results has |
| 532 changed. Octave will now simplify any complex number with a zero | |
| 533 imaginary part or any complex matrix with all elements having zero | |
| 534 imaginary part to a real value. Previously, this was done only for | |
| 535 positive zeros. Note that the behavior of the complex function is | |
| 536 unchanged and it still produces a complex value even if the | |
| 537 imaginary part is zero. | |
| 9826 | 538 |
| 10118 | 539 ** As a side effect of code refactoring in liboctave, the binary |
| 540 logical operations are now more easily amenable to compiler | |
| 541 optimizations and are thus significantly faster. | |
| 9595 | 542 |
| 10118 | 543 ** Octave now allows user-defined `subsasgn' methods to optimize out |
| 544 redundant copies. For more information, see the manual. | |
| 9595 | 545 |
| 10453 | 546 ** More efficient matrix division handling. Octave is now able to |
| 10118 | 547 handle the expressions |
| 9664 | 548 |
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549 M' \ V |
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550 M.' \ V |
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551 V / M |
| 9664 | 552 |
| 10118 | 553 (M is a matrix and V is a vector) more efficiently in certain cases. |
| 554 In particular, if M is triangular, all three expressions will be | |
| 555 handled by a single call to xTRTRS (from LAPACK), with appropriate | |
| 10453 | 556 flags. Previously, all three expressions required a physical |
| 10118 | 557 transpose of M. |
| 9664 | 558 |
| 10118 | 559 ** More efficient handling of certain mixed real-complex matrix |
| 560 operations. For instance, if RM is a real matrix and CM a complex | |
| 561 matrix, | |
| 9664 | 562 |
| 10118 | 563 RM * CM |
| 9664 | 564 |
| 565 can now be evaluated either as | |
| 566 | |
| 567 complex (RM * real (CM), RM * imag (CM)) | |
| 568 | |
| 569 or as | |
| 570 | |
| 571 complex (RM) * CM, | |
| 572 | |
| 10453 | 573 depending on the dimensions. The first form requires more |
| 574 temporaries and copying, but halves the FLOP count, which normally | |
| 575 brings better performance if RM has enough rows. Previously, the | |
| 576 second form was always used. | |
| 9664 | 577 |
| 11111 | 578 Matrix division is similarly affected. |
| 9664 | 579 |
| 10118 | 580 ** More efficient handling of triangular matrix factors returned from |
| 581 factorizations. The functions for computing QR, LU and Cholesky | |
| 582 factorizations will now automatically return the triangular matrix | |
| 583 factors with proper internal matrix_type set, so that it won't need | |
| 584 to be computed when the matrix is used for division. | |
| 9717 | 585 |
| 10118 | 586 ** The built-in `sum' function now handles the non-native summation |
| 587 (i.e., double precision sum of single or integer inputs) more | |
| 588 efficiently, avoiding a temporary conversion of the whole input | |
| 589 array to doubles. Further, `sum' can now accept an extra option | |
| 590 argument, using a compensated summation algorithm rather than a | |
| 591 straightforward sum, which significantly improves precision if lots | |
| 592 of cancellation occurs in the summation. | |
| 9717 | 593 |
| 10118 | 594 ** The built-in `bsxfun' function now uses optimized code for certain |
| 595 cases where built-in operator handles are passed in. Namely, the | |
| 596 optimizations concern the operators `plus', `minus', `times', | |
| 597 `ldivide', `rdivide', `power', `and', `or' (for logical arrays), | |
| 598 the relational operators `eq', `ne', `lt', `le', `gt', `ge', and the | |
| 599 functions `min' and `max'. Optimizations only apply when both | |
| 600 operands are of the same built-in class. Mixed real/complex and | |
| 601 single/double operations will first convert both operands to a | |
| 602 common type. | |
| 9745 | 603 |
| 10118 | 604 ** The `strfind' and `strrep' functions now have compiled |
| 605 implementations, facilitating significantly more efficient searching | |
| 606 and replacing in strings, especially with longer patterns. The code | |
| 607 of `strcat' has been vectorized and is now much more efficient when | |
| 608 many strings are concatenated. The `strcmpi' and `strncmpi' | |
| 609 functions are now built-in functions, providing better performance. | |
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610 |
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611 ** 'str2double' now has a compiled implementation and the API conforms |
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612 to Matlab. The additional Octave-specific features of returning a |
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613 boolean matrix indicating which elements were successfully converted |
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614 has been removed. |
| 10208 | 615 |
| 10453 | 616 ** Matlab-style ignoring input and output function arguments using |
| 11111 | 617 tilde (~) is now supported. Ignored output arguments may be |
| 618 detected from a function using the built-in function `isargout'. | |
| 619 For more details, consult the manual. | |
| 10886 | 620 |
| 10453 | 621 ** The list datatype, deprecated since the introduction of cells, has |
| 622 been removed. | |
| 10276 | 623 |
| 10453 | 624 ** The accumarray function has been optimized and is now significantly |
| 625 faster in certain important cases. | |
| 10054 | 626 |
| 10292 | 627 ** The behavior of isreal and isnumeric functions was changed to be more |
| 628 Matlab-compatible. | |
| 629 | |
| 10406 | 630 ** The integer math & conversion warnings (Octave:int-convert-nan, |
| 631 Octave:int-convert-non-int-val, Octave:int-convert-overflow, | |
| 11111 | 632 Octave:int-math-overflow) have been removed. |
| 10406 | 633 |
| 10453 | 634 ** rem and mod are now built-in functions. They also handle integer |
| 635 types efficiently using integer arithmetic. | |
| 10437 | 636 |
| 10536 | 637 ** Sparse indexing and indexed assignment has been mostly rewritten. |
| 638 Since Octave uses compressed column storage for sparse matrices, | |
| 639 major attention is devoted to operations manipulating whole columns. | |
| 640 Such operations are now significantly faster, as well as some other | |
| 641 important cases. | |
| 642 | |
| 643 Further, it is now possible to pre-allocate a sparse matrix and | |
| 644 subsequently fill it by assignments, provided they meet certain | |
| 645 conditions. For more information, consult the `spalloc' function, | |
| 646 which is no longer a mere dummy. Consequently, nzmax and nnz are no | |
| 11111 | 647 longer always equal in Octave. Octave may also produce a matrix |
| 648 with nnz < nzmax as a result of other operations, so you should | |
|
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649 consistently use nnz unless you really want to use nzmax (i.e., the |
| 11111 | 650 space allocated for nonzero elements). |
| 10536 | 651 |
| 652 Sparse concatenation is also affected, and concatenating sparse | |
| 653 matrices, especially larger collections, is now significantly more | |
| 11111 | 654 efficient. This applies to both the [] operator and the |
| 10536 | 655 cat/vertcat/horzcat functions. |
| 656 | |
| 11111 | 657 ** It is now possible to optionally employ the xGESDD LAPACK drivers |
| 14188 | 658 for computing the singular value decomposition using svd, instead |
| 11111 | 659 of the default xGESVD, using the configuration pseudo-variable |
| 660 svd_driver. The xGESDD driver can be up to 6x times faster when | |
| 661 singular vectors are requested, but is reported to be somewhat less | |
| 10639 | 662 robust on highly ill-conditioned matrices. |
| 663 | |
| 664 ** Configuration pseudo-variables, such as page_screen_output or | |
| 665 confirm_recursive_rmdir (or the above mentioned svd_driver), now | |
| 666 accept a "local" option as second argument, requesting the change | |
|
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667 to be undone when the current function returns: |
| 10639 | 668 |
| 669 function [status, msg] = rm_rf (dir) | |
| 670 confirm_recursive_rmdir (false, "local"); | |
| 671 [status, msg] = rmdir (dir, "s"); | |
| 672 ... | |
| 673 endfunction | |
| 674 | |
| 675 Upon return, confirm_recursive_rmdir will be restored to the value | |
| 676 it had on entry to the function, even if there were subsequent | |
| 677 changes to the variable in function rm_rf or any of the functions | |
| 678 it calls. | |
| 679 | |
| 11111 | 680 ** pkg now accepts a -forge option for downloading and installing |
| 681 packages from Octave Forge automatically. For example, | |
| 10774 | 682 |
| 683 pkg install -forge general | |
| 684 | |
| 11111 | 685 will automatically download the latest release of the general |
|
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686 package and attempt to install it. No automatic resolving of |
| 11111 | 687 dependencies is provided. Further, |
| 10639 | 688 |
| 10774 | 689 pkg list -forge |
| 690 | |
| 691 can be used to list all available packages. | |
| 692 | |
|
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693 ** The internal data representation of structs has been completely |
|
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694 rewritten to make certain optimizations feasible. The field data |
|
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695 can now be shared between structs with equal keys but different |
|
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696 dimensions or values, making operations that preserve the fields |
|
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697 faster. Economized storage is now used for scalar structs (just |
|
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698 like most other scalars), making their usage more |
|
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699 memory-efficient. Certain array-like operations on structs |
|
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700 (concatenation, uniform cellfun, num2cell) have gained a |
|
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701 significant speed-up. Additionally, the octave_scalar_map class |
|
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702 now provides a simpler interface to work with scalar structs within |
|
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|
703 a C++ DLD function. |
| 10639 | 704 |
|
12418
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|
705 ** Two new formats are available for displaying numbers: |
| 11111 | 706 |
|
12418
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|
707 format short eng |
|
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|
708 format long eng |
| 11111 | 709 |
|
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|
710 Both display numbers in engineering notation, i.e., mantissa + |
|
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|
711 exponent where the exponent is a multiple of 3. |
|
10776
062304bd692e
Update NEWS with description of new engineering format for numbers.
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|
712 |
|
12418
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|
713 ** 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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|
714 accumdim erfcx nfields pqpnonneg uigetdir |
|
6ed1e0be181e
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|
715 bitpack fileread nth_element quadcc uigetfile |
|
6ed1e0be181e
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|
716 bitunpack fminbnd onCleanup randi uiputfile |
|
6ed1e0be181e
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|
717 blkmm fskipl pbaspect repelems uimenu |
|
6ed1e0be181e
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|
718 cbrt ifelse pie3 reset whitebg |
|
6ed1e0be181e
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|
719 curl ishermitian powerset rsf2csf |
|
6ed1e0be181e
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|
720 chop isindex ppder saveas |
|
6ed1e0be181e
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|
721 daspect luupdate ppint strread |
|
6ed1e0be181e
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722 divergence merge ppjumps textread |
|
11109
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remove image_viewer function
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723 |
|
12418
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|
724 ** Using the image function to view images with external programs such |
|
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725 as display, xv, and xloadimage is no longer supported. The |
|
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726 image_viewer function has also been removed. |
|
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727 |
|
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728 ** The behavior of struct assignments to non-struct values has been |
|
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729 changed. Previously, it was possible to overwrite an arbitrary |
|
b914e8125f1b
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730 value: |
|
11109
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|
731 |
|
12418
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|
732 a = 1; |
|
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|
733 a.x = 2; |
| 10873 | 734 |
|
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|
735 This is no longer possible unless a is an empty matrix or cell |
|
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|
736 array. |
|
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737 |
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738 ** The dlmread function has been extended to allow specifying a custom |
|
b914e8125f1b
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|
739 value for empty fields. |
| 10829 | 740 |
|
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|
741 ** The dlmread and dlmwrite functions have been modified to accept |
|
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|
742 file IDs (as returned by fopen) in addition to file names. |
| 11111 | 743 |
|
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744 ** Octave can now optimize away the interpreter overhead of an |
|
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|
745 anonymous function handle, if the function simply calls another |
|
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|
746 function or handle with some of its parameters bound to certain |
|
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747 values. Example: |
|
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748 |
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|
749 f = @(x) sum (x, 1); |
| 10966 | 750 |
|
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751 When f is called, the call is forwarded to @sum with the constant 1 |
|
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752 appended, and the anonymous function call does not occur on the |
|
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|
753 call stack. |
| 10829 | 754 |
| 12424 | 755 ** For compatibility with Matlab, mu2lin (x) is now equivalent to |
| 756 mu2lin (x, 0). | |
| 757 | |
| 758 ** The new function `history_control' may be used to control the way | |
| 759 command lines are added to the history list when Octave is using | |
| 760 readline for command-line editing. For example | |
| 761 | |
| 762 history_control ("ignoredups") | |
| 763 | |
| 764 tells Octave to avoid adding duplicate lines to the history list. | |
| 765 | |
| 766 ** Octave now uses the gnulib library for improved portability and to | |
| 767 avoid bugs in operating system functions. | |
| 768 | |
|
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769 ** Deprecated functions. |
|
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|
770 |
|
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771 The following functions were deprecated in Octave 3.0 and have been |
|
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772 removed from Octave 3.4. |
|
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|
773 |
|
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|
774 beta_cdf geometric_pdf pascal_pdf |
|
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775 beta_inv geometric_rnd pascal_rnd |
|
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776 beta_pdf hypergeometric_cdf poisson_cdf |
|
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777 beta_rnd hypergeometric_inv poisson_inv |
|
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778 binomial_cdf hypergeometric_pdf poisson_pdf |
|
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779 binomial_inv hypergeometric_rnd poisson_rnd |
|
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780 binomial_pdf intersection polyinteg |
|
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781 binomial_rnd is_bool setstr |
|
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782 chisquare_cdf is_complex struct_contains |
|
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783 chisquare_inv is_list struct_elements |
|
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784 chisquare_pdf is_matrix t_cdf |
|
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785 chisquare_rnd is_scalar t_inv |
|
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|
786 clearplot is_square t_pdf |
|
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787 clg is_stream t_rnd |
|
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|
788 com2str is_struct uniform_cdf |
|
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|
789 exponential_cdf is_symmetric uniform_inv |
|
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|
790 exponential_inv is_vector uniform_pdf |
|
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|
791 exponential_pdf isstr uniform_rnd |
|
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|
792 exponential_rnd lognormal_cdf weibcdf |
|
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|
793 f_cdf lognormal_inv weibinv |
|
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|
794 f_inv lognormal_pdf weibpdf |
|
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|
795 f_pdf lognormal_rnd weibrnd |
|
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796 f_rnd meshdom weibull_cdf |
|
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797 gamma_cdf normal_cdf weibull_inv |
|
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changeset
|
798 gamma_inv normal_inv weibull_pdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
799 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
|
800 gamma_rnd normal_rnd wiener_rnd |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
801 geometric_cdf pascal_cdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
802 geometric_inv pascal_inv |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
803 |
|
8ea4cf59c41b
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John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
804 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>
parents:
11111
diff
changeset
|
805 be removed from Octave 3.6 (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
changeset
|
806 release after 3.2): |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
807 |
|
11390
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
808 create_set spcholinv splu |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
809 dmult spcumprod spmax |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
810 iscommand spcumsum spmin |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
811 israwcommand spdet spprod |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
812 lchol spdiag spqr |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
813 loadimage spfind spsum |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
814 mark_as_command sphcat spsumsq |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
815 mark_as_rawcommand spinv spvcat |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
816 spatan2 spkron str2mat |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
817 spchol splchol unmark_command |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
818 spchol2inv split unmark_rawcommand |
|
11112
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
819 |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
820 The following functions have been deprecated in Octave 3.4 and will |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
821 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
changeset
|
822 release after 3.4): |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
823 |
|
14354
55bb8c902a4d
maint: Remove deprecated functions from dev branch for next (3.8) release.
Rik <octave@nomad.inbox5.com>
parents:
14294
diff
changeset
|
824 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>
parents:
14294
diff
changeset
|
825 autocov dispatch glpkmex krylovb saveimage |
|
55bb8c902a4d
maint: Remove deprecated functions from dev branch for next (3.8) release.
Rik <octave@nomad.inbox5.com>
parents:
14294
diff
changeset
|
826 betai fstat intwarning perror strerror |
|
11112
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
827 |
|
7990
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
828 Summary of important user-visible changes for version 3.2: |
| 5913 | 829 --------------------------------------------------------- |
| 2452 | 830 |
| 8737 | 831 ** Compatibility with Matlab graphics has been improved. |
| 6329 | 832 |
|
8070
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
833 The hggroup object and associated listener callback functions have |
| 8737 | 834 been added allowing the inclusion of group objects. Data sources |
|
8070
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
835 have been added to these group objects such that |
|
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
836 |
|
3b53b25e2550
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parents:
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diff
changeset
|
837 x = 0:0.1:10; |
|
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
838 y = sin (x); |
|
3b53b25e2550
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David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
839 plot (x, y, "ydatasource", "y"); |
|
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
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diff
changeset
|
840 for i = 1 : 100 |
|
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
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diff
changeset
|
841 pause(0.1) |
|
3b53b25e2550
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David Bateman <dbateman@free.fr>
parents:
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diff
changeset
|
842 y = sin (x + 0.1 * i); |
| 14188 | 843 refreshdata (); |
|
8070
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
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diff
changeset
|
844 endfor |
|
3b53b25e2550
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David Bateman <dbateman@free.fr>
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8014
diff
changeset
|
845 |
| 8737 | 846 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
|
847 stem-series, bar-series, etc., objects for better Matlab |
| 8737 | 848 compatibility. |
| 849 | |
| 850 ** New graphics functions: | |
| 851 | |
|
11576
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
852 addlistener ezcontour gcbo refresh |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
853 addproperty ezcontourf ginput refreshdata |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
854 allchild ezmesh gtext specular |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
855 available_graphics_toolkits ezmeshc intwarning surfl |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
856 graphics_toolkit ezplot ishghandle trisurf |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
857 cla ezplot3 isocolors waitforbuttonpress |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
858 clabel ezpolar isonormals |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
859 comet ezsurf isosurface |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
860 dellistener findall linkprop |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
861 diffuse gcbf plotmatrix |
|
8070
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
862 |
| 8737 | 863 ** New experimental OpenGL/FLTK based plotting system. |
| 864 | |
| 865 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
changeset
|
866 toolkit is now part of Octave. This graphics toolkit is disabled by |
| 8737 | 867 default. You can switch to using it with the command |
|
8070
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
868 |
|
11576
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
869 graphics_toolkit ("fltk") |
|
8070
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
870 |
|
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
871 for all future figures or for a particular figure with the command |
|
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
872 |
|
11576
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
873 graphics_toolkit (h, "fltk") |
|
8070
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
874 |
| 11139 | 875 where "h" is a valid figure handle. |
|
8070
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
876 |
| 8737 | 877 ** Functions providing direct access to gnuplot have been removed. |
| 878 | |
|
7990
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
879 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
|
880 __gnuplot_show__, __gnuplot_replot__, __gnuplot_splot__, |
| 8737 | 881 __gnuplot_save_data__ and __gnuplot_send_inline_data__ have been |
| 882 removed from Octave. These function were incompatible with the | |
| 883 high level graphics handle code. | |
| 6329 | 884 |
| 8885 | 885 ** The Control, Finance and Quaternion functions have been removed. |
| 886 | |
| 887 These functions are now available as separate packages from | |
| 888 | |
| 889 http://octave.sourceforge.net/packages.html | |
| 890 | |
| 891 and can be reinstalled using the Octave package manager (see | |
| 892 the pkg function). | |
| 893 | |
| 894 ** Specific sparse matrix functions removed. | |
| 895 | |
| 896 The following functions, which handled only sparse matrices have | |
| 897 been removed. Instead of calling these functions directly, you | |
| 898 should use the corresponding function without the "sp" prefix. | |
| 8737 | 899 |
| 8885 | 900 spatan2 spcumsum spkron spprod |
| 901 spchol spdet splchol spqr | |
| 902 spchol2inv spdiag splu spsum | |
| 903 spcholinv spfind spmax spsumsqk | |
| 904 spcumprod spinv spmin | |
| 905 | |
| 906 ** Improvements to the debugger. | |
| 907 | |
| 908 The interactive debugging features have been improved. Stopping | |
| 909 on statements with dbstop should work correctly now. Stepping | |
| 910 into and over functions, and stepping one statement at a time | |
| 911 (with dbstep) now works. Moving up and down the call stack with | |
| 912 dbup and dbdown now works. The dbstack function is now available | |
| 913 to print the current function call stack. The new dbquit function | |
| 914 is available to exit the debugging mode. | |
| 915 | |
| 916 ** Improved traceback error messages. | |
| 917 | |
| 918 Traceback error messages are much more concise and easier to | |
| 919 understand. They now display information about the function call | |
| 920 stack instead of the stack of all statements that were active at | |
| 921 the point of the error. | |
|
8014
44d206ae68c9
improve fsolve compatibility
John W. Eaton <jwe@octave.org>
parents:
7990
diff
changeset
|
922 |
| 8737 | 923 ** Object Oriented Programming. |
|
8405
d79dfbff2f9d
document new norm features in NEWS
Jaroslav Hajek <highegg@gmail.com>
parents:
8396
diff
changeset
|
924 |
| 8737 | 925 Octave now includes OOP features and the user can create their own |
| 926 class objects and overloaded functions and operators. For | |
| 927 example, all methods of a class called "myclass" will be found in | |
| 928 a directory "@myclass" on the users path. The class specific | |
| 929 versions of functions and operators take precedence over the | |
| 930 generic versions of these functions. | |
| 931 | |
| 932 New functions related to OOP include | |
| 7189 | 933 |
| 8737 | 934 class inferiorto isobject loadobj methods superiorto |
| 935 | |
| 936 See the Octave manual for more details. | |
| 7038 | 937 |
| 8747 | 938 ** Parsing of Command-style Functions. |
| 939 | |
| 940 Octave now parses command-style functions without needing to first | |
| 941 declare them with "mark_as_command". The rules for recognizing a | |
| 942 command-style function calls are | |
| 943 | |
| 944 * A command must appear as the first word in a statement, | |
| 945 followed by a space. | |
| 946 | |
| 947 * The first character after the space must not be '=' or '(' | |
| 948 | |
| 949 * The next token after the space must not look like a binary | |
| 950 operator. | |
| 951 | |
| 952 These rules should be mostly compatible with the way Matlab parses | |
| 953 command-style function calls and allow users to define commands in | |
| 954 .m files without having to mark them as commands. | |
| 955 | |
| 956 Note that previous versions of Octave allowed expressions like | |
| 957 | |
| 958 x = load -text foo.dat | |
| 959 | |
| 960 but an expression like this will now generate a parse error. In | |
| 961 order to assign the value returned by a function to a variable, | |
| 962 you must use the normal function call syntax: | |
| 963 | |
| 964 x = load ("-text", "foo.dat"); | |
| 965 | |
| 8737 | 966 ** Block comments. |
| 967 | |
| 8747 | 968 Commented code can be between matching "#{" and "#}" or "%{" and |
| 969 "%}" markers, even if the commented code spans several line. This | |
| 970 allows blocks code to be commented, without needing to comment | |
| 971 each line. For example, | |
| 5814 | 972 |
| 8747 | 973 function [s, t] = func (x, y) |
| 974 s = 2 * x; | |
| 975 #{ | |
| 976 s *= y; | |
| 977 t = y + x; | |
| 978 #} | |
|
7990
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
979 endfunction |
| 5814 | 980 |
| 8747 | 981 the lines "s *= y;" and "t = y + x" will not be executed. |
| 8737 | 982 |
|
12400
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
983 ** If any subfunction in a file ends with "end" or "endfunction", then |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
984 they all must end that way. Previously, Octave accepted |
|
5252f12537f8
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
985 |
|
5252f12537f8
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John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
986 function main () |
|
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
changeset
|
987 ... |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
988 # no endfunction here. |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
989 function sub () |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
990 ... |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
991 endfunction |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
992 |
|
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
changeset
|
993 but this is no longer allowed. |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
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parents:
12224
diff
changeset
|
994 |
| 8737 | 995 ** Special treatment in the parser of expressions like "a' * b". |
| 2452 | 996 |
| 8737 | 997 In these cases the transpose is no longer explicitly formed and |
| 998 BLAS libraries are called with the transpose flagged, | |
| 999 significantly improving performance for these kinds of | |
| 1000 operations. | |
|
8417
654bcfb937bf
Add the eigs and svds functions
David Bateman <dbateman@free.fr>
parents:
8405
diff
changeset
|
1001 |
| 8737 | 1002 ** Single Precision data type. |
| 2452 | 1003 |
| 8737 | 1004 Octave now includes a single precision data type. Single |
| 1005 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
|
1006 from functions like ones, eye, etc. For example, |
| 5995 | 1007 |
| 8737 | 1008 single (1) |
| 1009 ones (2, 2, "single") | |
| 1010 zeros (2, 2, "single") | |
| 1011 eye (2, 2, "single") | |
| 1012 Inf (2, 2, "single") | |
| 1013 NaN (2, 2, "single") | |
| 1014 NA (2, 2, "single") | |
| 7279 | 1015 |
| 8737 | 1016 all create single precision variables. For compatibility with |
| 1017 Matlab, mixed double/single precision operators and functions | |
| 1018 return single precision types. | |
| 1019 | |
| 1020 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
changeset
|
1021 representation of the double precision NA value has changed, and |
|
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
1022 so users that make use of data generated by Octave with R or |
|
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
1023 visa-versa are warned that compatibility might not be assured. |
| 7279 | 1024 |
| 8737 | 1025 ** Improved array indexing. |
| 1026 | |
| 1027 The underlying code used for indexing of arrays has been | |
|
9034
52515efc50c0
Documentation cleanup on NEWS file
Rik <rdrider0-list@yahoo.com>
parents:
9031
diff
changeset
|
1028 completely rewritten and indexing is now significantly faster. |
| 8737 | 1029 |
| 8755 | 1030 ** Improved memory management. |
| 1031 | |
| 1032 Octave will now attempt to share data in some cases where previously | |
| 1033 a copy would be made, such as certain array slicing operations or | |
|
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|
1034 conversions between cells, structs and cs-lists. This usually reduces |
| 8755 | 1035 both time and memory consumption. |
| 9128 | 1036 Also, Octave will now attempt to detect and optimize usage of a vector |
| 1037 as a stack, when elements are being repeatedly inserted at/removed from | |
| 1038 the end of the vector. | |
| 8755 | 1039 |
| 8738 | 1040 ** Improved performance for reduction operations. |
| 1041 | |
| 8755 | 1042 The performance of the sum, prod, sumsq, cumsum, cumprod, any, all, |
| 1043 max and min functions has been significantly improved. | |
| 8738 | 1044 |
| 9006 | 1045 ** Sorting and searching. |
| 1046 | |
| 1047 The performance of sort has been improved, especially when sorting | |
| 10453 | 1048 indices are requested. An efficient built-in issorted |
| 1049 implementation was added. The sortrows function now uses a more | |
|
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|
1050 efficient algorithm, especially in the homogeneous case. The lookup |
| 10453 | 1051 function is now a built-in function performing a binary search, |
| 1052 optimized for long runs of close elements. Lookup also works with | |
| 1053 cell arrays of strings. | |
| 9006 | 1054 |
| 1055 ** Range arithmetics | |
| 1056 | |
| 10453 | 1057 For some operations on ranges, Octave will attempt to keep the |
| 1058 result as a range. These include negation, adding a scalar, | |
|
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|
1059 subtracting a scalar, and multiplying by a scalar. Ranges with zero |
| 10453 | 1060 increment are allowed and can be constructed using the built-in |
| 1061 function `ones'. | |
| 9006 | 1062 |
| 1063 ** Various performance improvements. | |
| 1064 | |
| 10453 | 1065 Performance of a number of other built-in operations and functions |
| 1066 was improved, including: | |
| 9006 | 1067 |
| 1068 * logical operations | |
| 1069 * comparison operators | |
| 1070 * element-wise power | |
| 1071 * accumarray | |
| 1072 * cellfun | |
| 1073 * isnan | |
| 1074 * isinf | |
| 1075 * isfinite | |
| 1076 * nchoosek | |
| 1077 * repmat | |
| 1078 * strcmp | |
| 1079 | |
| 8737 | 1080 ** 64-bit integer arithmetic. |
| 1081 | |
| 1082 Arithmetic with 64-bit integers (int64 and uint64 types) is fully | |
| 1083 supported, with saturation semantics like the other integer types. | |
| 1084 Performance of most integer arithmetic operations has been | |
| 1085 improved by using integer arithmetic directly. Previously, Octave | |
| 1086 performed integer math with saturation semantics by converting the | |
| 1087 operands to double precision, performing the operation, and then | |
| 1088 converting the result back to an integer value, truncating if | |
| 1089 necessary. | |
| 1090 | |
| 8885 | 1091 ** Diagonal and permutation matrices. |
| 1092 | |
| 1093 The interpreter can now treat diagonal and permutation matrices as | |
| 1094 special objects that store only the non-zero elements, rather than | |
| 1095 general full matrices. Therefore, it is now possible to construct | |
| 1096 and use these matrices in linear algebra without suffering a | |
| 1097 performance penalty due to storing large numbers of zero elements. | |
| 1098 | |
| 1099 ** Improvements to fsolve. | |
| 1100 | |
| 1101 The fsolve function now accepts an option structure argument (see | |
| 1102 also the optimset function). The INFO values returned from fsolve | |
| 1103 have changed to be compatible with Matlab's fsolve function. | |
| 1104 Additionally, fsolve is now able to solve overdetermined systems, | |
| 1105 complex-differentiable complex systems, systems with a sparse | |
| 1106 jacobian and can work in single precision if given single precision | |
|
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|
1107 inputs. It can also be called recursively. |
| 8885 | 1108 |
| 8737 | 1109 ** Improvements to the norm function. |
| 1110 | |
| 1111 The norm function is now able to compute row or column norms of a | |
| 1112 matrix in a single call, as well as general matrix p-norms. | |
| 1113 | |
| 1114 ** New functions for computing some eigenvalues or singular values. | |
| 1115 | |
| 1116 The eigs and svds functions have been included in Octave. These | |
| 1117 functions require the ARPACK library (now distributed under a | |
| 1118 GPL-compatible license). | |
| 1119 | |
| 1120 ** New QR and Cholesky factorization updating functions. | |
|
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34960ba08a81
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Jaroslav Hajek <highegg@gmail.com>
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|
1121 |
| 8737 | 1122 choldelete cholshift qrdelete qrshift |
| 1123 cholinsert cholupdate qrinsert qrupdate | |
| 1124 | |
| 1125 ** New quadrature functions. | |
| 1126 | |
| 1127 dblquad quadgk quadv triplequad | |
| 1128 | |
| 8885 | 1129 ** New functions for reading and writing images. |
| 1130 | |
| 1131 The imwrite and imread functions have been included in Octave. | |
| 1132 These functions require the GraphicsMagick library. The new | |
| 1133 function imfinfo provides information about an image file (size, | |
| 1134 type, colors, etc.) | |
| 1135 | |
|
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1136 ** The input_event_hook function has been replaced by the pair of |
|
1500d0197484
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|
1137 functions add_input_event_hook and remove_input_event_hook so that |
|
1500d0197484
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|
1138 more than one hook function may be installed at a time. |
|
1500d0197484
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|
1139 |
| 8737 | 1140 ** Other miscellaneous new functions. |
|
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1141 |
|
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1142 addtodate hypot reallog |
|
2d0f8692a82e
Add the 'histc' function
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|
1143 bicgstab idivide realpow |
| 9006 | 1144 cellslices info realsqrt |
| 1145 cgs interp1q rectint | |
| 1146 command_line_path isdebugmode regexptranslate | |
| 1147 contrast isfloat restoredefaultpath | |
| 1148 convn isstrprop roundb | |
| 1149 cummin log1p rundemos | |
| 1150 cummax lsqnonneg runlength | |
| 1151 datetick matlabroot saveobj | |
| 1152 display namelengthmax spaugment | |
| 1153 expm1 nargoutchk strchr | |
| 1154 filemarker pathdef strvcat | |
| 1155 fstat perl subspace | |
| 1156 full prctile symvar | |
| 1157 fzero quantile treelayout | |
| 1158 genvarname re_read_readline_init_file validatestring | |
| 1159 histc | |
|
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|
1160 |
| 8885 | 1161 ** Changes to strcat. |
| 1162 | |
| 1163 The strcat function is now compatible with Matlab's strcat | |
| 1164 function, which removes trailing whitespace when concatenating | |
| 1165 character strings. For example | |
| 1166 | |
| 1167 strcat ('foo ', 'bar') | |
| 1168 ==> 'foobar' | |
| 1169 | |
| 1170 The new function cstrcat provides the previous behavior of | |
| 1171 Octave's strcat. | |
| 1172 | |
| 1173 ** Improvements to the help functions. | |
| 1174 | |
|
9034
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1175 The help system has been mostly re-implemented in .m files to make |
| 8885 | 1176 it easier to modify. Performance of the lookfor function has been |
| 1177 greatly improved by caching the help text from all functions that | |
| 1178 are distributed with Octave. The pkg function has been modified | |
| 1179 to generate cache files for external packages when they are | |
| 1180 installed. | |
| 1181 | |
|
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1182 ** Deprecated functions. |
|
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1183 |
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1184 The following functions were deprecated in Octave 3.0 and will be |
|
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1185 removed from Octave 3.4 (or whatever version is the second major |
|
8888
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|
1186 release after 3.0): |
|
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1187 |
|
11112
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1188 beta_cdf geometric_pdf pascal_pdf |
|
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1189 beta_inv geometric_rnd pascal_rnd |
|
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1190 beta_pdf hypergeometric_cdf poisson_cdf |
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|
1191 beta_rnd hypergeometric_inv poisson_inv |
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1192 binomial_cdf hypergeometric_pdf poisson_pdf |
|
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1193 binomial_inv hypergeometric_rnd poisson_rnd |
|
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1194 binomial_pdf intersection polyinteg |
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1195 binomial_rnd is_bool setstr |
|
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1196 chisquare_cdf is_complex struct_contains |
|
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|
1197 chisquare_inv is_list struct_elements |
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1198 chisquare_pdf is_matrix t_cdf |
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1199 chisquare_rnd is_scalar t_inv |
|
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1200 clearplot is_square t_pdf |
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1201 clg is_stream t_rnd |
|
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1202 com2str is_struct uniform_cdf |
|
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|
1203 exponential_cdf is_symmetric uniform_inv |
|
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|
1204 exponential_inv is_vector uniform_pdf |
|
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1205 exponential_pdf isstr uniform_rnd |
|
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list deprecated and removed functions in NEWS file
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|
1206 exponential_rnd lognormal_cdf weibcdf |
|
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1207 f_cdf lognormal_inv weibinv |
|
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1208 f_inv lognormal_pdf weibpdf |
|
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1209 f_pdf lognormal_rnd weibrnd |
|
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|
1210 f_rnd meshdom weibull_cdf |
|
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|
1211 gamma_cdf normal_cdf weibull_inv |
|
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|
1212 gamma_inv normal_inv weibull_pdf |
|
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|
1213 gamma_pdf normal_pdf weibull_rnd |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
1214 gamma_rnd normal_rnd wiener_rnd |
|
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|
1215 geometric_cdf pascal_cdf |
|
0c7b0049c023
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|
1216 geometric_inv pascal_inv |
|
0c7b0049c023
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|
1217 |
|
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|
1218 The following functions are now deprecated in Octave 3.2 and will |
|
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|
1219 be removed from Octave 3.6 (or whatever version is the second major |
|
8888
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|
1220 release after 3.2): |
|
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1221 |
|
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1222 create_set spcholinv spmax |
|
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|
1223 dmult spcumprod spmin |
|
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1224 iscommand spcumsum spprod |
|
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1225 israwcommand spdet spqr |
|
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|
1226 lchol spdiag spsum |
|
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|
1227 loadimage spfind spsumsq |
|
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|
1228 mark_as_command spinv str2mat |
|
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|
1229 mark_as_rawcommand spkron unmark_command |
|
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|
1230 spatan2 splchol unmark_rawcommand |
|
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|
1231 spchol split |
|
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|
1232 spchol2inv splu |
|
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|
1233 |
|
7990
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Initial update of NEWS for 3.2 release
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|
1234 See NEWS.3 for old news. |