Mercurial > hg > octave-lyh
annotate NEWS @ 13262:37e6f54cca15
update NEWS
* NEWS: Mention new profiler functions with the entry about the new
profiler. Mention new preference functions.
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Fri, 30 Sep 2011 22:21:26 -0400 |
| parents | 19b9f17d22af |
| children | 571557ddabb9 |
| rev | line source |
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1 Summary of important user-visible changes for version 3.6: |
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2 --------------------------------------------------------- |
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3 |
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4 ** The PCRE library is now required to build Octave. |
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5 |
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6 ** Octave now features a profiler, thanks to the work of Daniel Kraft |
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7 under the Google Summer of Code mentorship program. The manual has |
| 13262 | 8 been updated to reflect this addition. The new user-visible |
| 9 functions are profexplore, profile, and profshow. | |
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10 |
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11 ** Overhaul of statistical distribution functions |
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12 |
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13 Functions now return "single" outputs for inputs of class "single". |
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14 |
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15 75% reduction in memory usage through use of logical indexing. |
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16 |
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17 Random sample functions now use the same syntax as rand() and accept |
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18 a comma separated list of dimensions or a dimension vector. |
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19 |
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20 Functions have been made Matlab-compatible with regard to special |
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21 cases (probability on boundaries, probabilities for values outside |
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22 distribution, etc.). This may cause subtle changes to existing |
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23 scripts. |
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24 |
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25 negative binomial function has been extended to real, non-integer inputs. |
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26 discrete_inv() now returns v(1) for 0 instead of NaN. |
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27 nbincdf() recoded to use closed form solution with betainc(). |
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28 |
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29 ** strread, textscan, and textread have been completely revamped. |
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30 |
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31 They now support nearly all Matlab functionality including: |
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32 |
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33 * ML-compatible whitespace and delimiter defaults |
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34 |
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35 * ML-compatible options: 'whitespace', treatasempty', |
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36 format string repeat count, user-specified comment style, uneven-length |
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37 output arrays, %n and %u conversion specifiers (provisionally) |
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38 |
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39 ** Certain string functions have been modified for greater Matlab compatibility |
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40 and for 15X greater performance when operating on cell array of strings. |
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41 |
| 13262 | 42 deblank: Now requires character or cellstr input. |
| 43 strtrim: Now requires character or cellstr input. | |
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44 No longer trims nulls ("\0") from string for ML compatibility. |
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45 strmatch: Follows documentation precisely and ignores trailing spaces |
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46 in pattern and in string. Note that Matlab documents this |
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47 behavior but the implementation does *not* always follow it. |
| 13262 | 48 |
| 49 ** Matlab-compatible preference functions: | |
| 50 | |
| 51 addpref getpref ispref rmpref setpref | |
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52 |
| 13262 | 53 ** Other miscellaneous new functions: |
| 54 | |
| 55 iscolumn | |
| 56 issrow | |
| 57 zscore | |
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58 |
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59 ** Deprecated functions. |
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60 |
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61 The following functions were deprecated in Octave 3.2 and have been |
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62 removed from Octave 3.6. |
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63 |
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64 create_set spcholinv splu |
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65 dmult spcumprod spmax |
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66 iscommand spcumsum spmin |
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67 israwcommand spdet spprod |
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68 lchol spdiag spqr |
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69 loadimage spfind spsum |
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70 mark_as_command sphcat spsumsq |
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71 mark_as_rawcommand spinv spvcat |
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72 spatan2 spkron str2mat |
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73 spchol splchol unmark_command |
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74 spchol2inv split unmark_rawcommand |
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75 |
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76 The following functions have been deprecated in Octave 3.6 and will |
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77 be removed from Octave 3.10 (or whatever version is the second major |
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78 release after 3.6): |
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79 |
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80 cut is_duplicate_entry |
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81 cor polyderiv |
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82 corrcoef studentize |
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83 __error_text__ sylvester_matrix |
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84 error_text |
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85 |
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86 Summary of important user-visible changes for version 3.4.2: |
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87 ----------------------------------------------------------- |
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88 |
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89 ** Octave 3.2.4 fixes some minor installation problems that affected |
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90 version 3.4.1. |
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91 |
| 12709 | 92 Summary of important user-visible changes for version 3.4.1: |
| 93 ----------------------------------------------------------- | |
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94 |
| 12709 | 95 ** Octave 3.4.1 is primarily a bug fixing release. |
| 96 | |
| 97 ** IMPORTANT note about binary incompatibility in this release: | |
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98 |
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99 Binary compatibility for all 3.4.x releases was originally planned, |
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100 but this is impossible for the 3.4.1 release due to a bug in the way |
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101 shared libraries were built in Octave 3.4.0. Because of this bug, |
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102 .oct files built for Octave 3.4.0 must be recompiled before they |
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103 will work with Octave 3.4.1. |
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104 |
| 12709 | 105 Given that there would be binary incompatibilities with shared |
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106 libraries going from Octave 3.4.0 to 3.4.1, the following |
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107 incompatible changes were also made in this release: |
| 12709 | 108 |
| 109 * The Perl Compatible Regular Expression (PCRE) library is now | |
| 110 required to build Octave. | |
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111 |
| 12712 | 112 * Octave's libraries and .oct files are now installed in |
| 113 subdirectories of $libdir instead of $libexecdir. | |
| 114 | |
| 12709 | 115 Any future Octave 3.4.x release versions should remain binary |
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116 compatible with Octave 3.4.1 as proper library versioning is now |
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117 being used as recommended by the libtool manual. |
| 12709 | 118 |
| 119 ** The following functions have been deprecated in Octave 3.4.1 and will | |
| 120 be removed from Octave 3.8 (or whatever version is the second major | |
| 121 release after 3.4): | |
| 122 | |
| 123 cquad is_duplicate_entry perror strerror | |
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124 |
| 12709 | 125 ** The following functions are new in 3.4.1: |
| 126 | |
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127 colstyle gmres iscolumn isrow mgorth nproc rectangle |
| 12709 | 128 |
| 129 ** The get_forge_pkg function is now private. | |
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130 |
| 12709 | 131 ** The rectangle_lw, rectangle_sw, triangle_lw, and triangle_sw |
| 132 functions are now private. | |
| 133 | |
| 134 ** The logistic_regression_derivatives and logistic_regression_likelihood | |
| 135 functions are now private. | |
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136 |
| 12739 | 137 ** ChangeLog files in the Octave sources are no longer maintained |
| 138 by hand. Instead, there is a single ChangeLog file generated from | |
| 139 the Mercurial version control commit messages. Older ChangeLog | |
| 140 information can be found in the etc/OLD-ChangeLogs directory in the | |
| 141 source distribution. | |
| 142 | |
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143 Summary of important user-visible changes for version 3.4: |
| 9352 | 144 --------------------------------------------------------- |
| 145 | |
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146 ** BLAS and LAPACK libraries are now required to build Octave. The |
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147 subset of the reference BLAS and LAPACK libraries has been removed |
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148 from the Octave sources. |
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149 |
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150 ** The ARPACK library is now distributed with Octave so it no longer |
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152 Octave. |
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153 |
| 10118 | 154 ** The `lookup' function was extended to be more useful for |
| 155 general-purpose binary searching. Using this improvement, the | |
| 156 ismember function was rewritten for significantly better | |
| 157 performance. | |
| 9352 | 158 |
| 159 ** Real, integer and logical matrices, when used in indexing, will now | |
| 160 cache the internal index_vector value (zero-based indices) when | |
| 161 successfully used as indices, eliminating the conversion penalty for | |
| 10118 | 162 subsequent indexing by the same matrix. In particular, this means it |
| 163 is no longer needed to avoid repeated indexing by logical arrays | |
| 164 using find for performance reasons. | |
| 9888 | 165 |
| 10118 | 166 ** Logical matrices are now treated more efficiently when used as |
| 167 indices. Octave will keep the index as a logical mask unless the | |
| 168 ratio of true elements is small enough, using a specialized | |
| 169 code. Previously, all logical matrices were always first converted | |
| 170 to index vectors. This results in savings in both memory and | |
| 171 computing time. | |
| 9480 | 172 |
| 10118 | 173 ** The `sub2ind' and `ind2sub' functions were reimplemented as compiled |
| 174 functions for better performance. These functions are now faster, | |
| 175 can deliver more economized results for ranges, and can reuse the | |
| 176 index cache mechanism described in previous paragraph. | |
| 177 | |
| 178 ** The built-in function equivalents to associative operators (`plus', | |
| 179 `times', `mtimes', `and', and `or') have been extended to accept | |
| 180 multiple arguments. This is especially useful for summing | |
| 181 (multiplying, etc.) lists of objects (of possibly distinct types): | |
| 9408 | 182 |
| 9449 | 183 matrix_sum = plus (matrix_list{:}); |
| 184 | |
| 10118 | 185 ** An FTP object type based on libcurl has been implemented. These |
| 186 objects allow ftp connections, downloads and uploads to be | |
| 187 managed. For example, | |
| 9880 | 188 |
| 10118 | 189 fp = ftp ("ftp.octave.org); |
| 190 cd (fp, "gnu/octave"); | |
| 191 mget (fp, "octave-3.2.3.tar.bz2"); | |
| 192 close (fp); | |
| 9880 | 193 |
| 10118 | 194 ** The default behavior of `assert (observed, expected)' has been |
| 195 relaxed to employ less strict checking that does not require the | |
| 196 internals of the values to match. This avoids previously valid | |
| 197 tests from breaking due to new internal classes introduced in future | |
| 198 Octave versions. | |
| 9449 | 199 |
| 200 For instance, all of these assertions were true in Octave 3.0.x | |
| 201 but false in 3.2.x due to new optimizations and improvements: | |
| 202 | |
| 203 assert (2*linspace (1, 5, 5), 2*(1:5)) | |
| 204 assert (zeros (0, 0), []) | |
| 205 assert (2*ones (1, 5), (2) (ones (1,5))) | |
| 9462 | 206 |
| 10118 | 207 ** The behavior of library functions `ismatrix', `issquare', and |
| 208 `issymmetric' has been changed for better consistency. | |
| 9873 | 209 |
| 10292 | 210 * The `ismatrix' function now returns true for all numeric, |
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211 logical and character 2-D or N-D matrices. Previously, `ismatrix' |
| 10292 | 212 returned false if the first or second dimension was zero. |
| 213 Hence, `ismatrix ([])' was false, | |
| 214 while `ismatrix (zeros (1,2,0))' was true. | |
| 9873 | 215 |
| 10118 | 216 * The `issquare' function now returns a logical scalar, and is |
| 217 equivalent to the expression | |
| 218 | |
| 219 ismatrix (x) && ndims (x) == 2 && rows (x) == columns (x) | |
| 220 | |
| 221 The dimension is no longer returned. As a result, `issquare ([])' | |
| 222 now yields true. | |
| 9873 | 223 |
| 10118 | 224 * The `issymmetric' function now checks for symmetry instead of |
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225 Hermitianness. For the latter, ishermitian was created. Also, |
| 10118 | 226 logical scalar is returned rather than the dimension, so |
| 227 `issymmetric ([])' is now true. | |
| 9873 | 228 |
| 10118 | 229 ** Function handles are now aware of overloaded functions. If a |
| 230 function is overloaded, the handle determines at the time of its | |
| 231 reference which function to call. A non-overloaded version does not | |
| 232 need to exist. | |
| 9873 | 233 |
| 10118 | 234 ** Overloading functions for built-in classes (double, int8, cell, |
| 235 etc.) is now compatible with Matlab. | |
| 9408 | 236 |
| 10323 | 237 ** Function handles can now be compared with the == and != operators, |
| 238 as well as the `isequal' function. | |
| 239 | |
| 10118 | 240 ** Performance of concatenation (using []) and the functions `cat', |
| 241 `horzcat', and `vertcat' has been improved for multidimensional | |
| 242 arrays. | |
| 10117 | 243 |
| 9547 | 244 ** The operation-assignment operators +=, -=, *= and /= now behave more |
| 10118 | 245 efficiently in certain cases. For instance, if M is a matrix and S a |
| 246 scalar, then the statement | |
| 9547 | 247 |
| 10118 | 248 M += S; |
| 9547 | 249 |
| 10118 | 250 will operate on M's data in-place if it is not shared by another |
| 251 variable, usually increasing both time and memory efficiency. | |
| 9547 | 252 |
| 9558 | 253 Only selected common combinations are affected, namely: |
| 9547 | 254 |
| 255 matrix += matrix | |
| 256 matrix -= matrix | |
| 9558 | 257 matrix .*= matrix |
| 258 matrix ./= matrix | |
| 259 | |
| 9547 | 260 matrix += scalar |
| 261 matrix -= scalar | |
| 262 matrix *= scalar | |
| 263 matrix /= scalar | |
| 9558 | 264 |
| 9552 | 265 logical matrix |= logical matrix |
| 266 logical matrix &= logical matrix | |
| 9547 | 267 |
| 10118 | 268 where matrix and scalar belong to the same class. The left-hand |
| 269 side must be a simple variable reference. | |
| 9888 | 270 |
| 10118 | 271 Moreover, when unary operators occur in expressions, Octave will |
| 272 also try to do the operation in-place if it's argument is a | |
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273 temporary expression. |
| 9589 | 274 |
| 10118 | 275 ** The effect of comparison operators (<, >, <=, and >=) applied to |
| 276 complex numbers has changed to be consistent with the strict | |
| 277 ordering defined by the `max', `min', and `sort' functions. More | |
| 278 specifically, complex numbers are compared by lexicographical | |
| 279 comparison of the pairs `[abs(z), arg(z)]'. Previously, only real | |
| 280 parts were compared; this can be trivially achieved by wrapping the | |
| 281 operands in real(). | |
| 9547 | 282 |
| 10118 | 283 ** The automatic simplification of complex computation results has |
| 284 changed. Octave will now simplify any complex number with a zero | |
| 285 imaginary part or any complex matrix with all elements having zero | |
| 286 imaginary part to a real value. Previously, this was done only for | |
| 287 positive zeros. Note that the behavior of the complex function is | |
| 288 unchanged and it still produces a complex value even if the | |
| 289 imaginary part is zero. | |
| 9826 | 290 |
| 10118 | 291 ** As a side effect of code refactoring in liboctave, the binary |
| 292 logical operations are now more easily amenable to compiler | |
| 293 optimizations and are thus significantly faster. | |
| 9595 | 294 |
| 10118 | 295 ** Octave now allows user-defined `subsasgn' methods to optimize out |
| 296 redundant copies. For more information, see the manual. | |
| 9595 | 297 |
| 10453 | 298 ** More efficient matrix division handling. Octave is now able to |
| 10118 | 299 handle the expressions |
| 9664 | 300 |
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301 M' \ V |
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302 M.' \ V |
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303 V / M |
| 9664 | 304 |
| 10118 | 305 (M is a matrix and V is a vector) more efficiently in certain cases. |
| 306 In particular, if M is triangular, all three expressions will be | |
| 307 handled by a single call to xTRTRS (from LAPACK), with appropriate | |
| 10453 | 308 flags. Previously, all three expressions required a physical |
| 10118 | 309 transpose of M. |
| 9664 | 310 |
| 10118 | 311 ** More efficient handling of certain mixed real-complex matrix |
| 312 operations. For instance, if RM is a real matrix and CM a complex | |
| 313 matrix, | |
| 9664 | 314 |
| 10118 | 315 RM * CM |
| 9664 | 316 |
| 317 can now be evaluated either as | |
| 318 | |
| 319 complex (RM * real (CM), RM * imag (CM)) | |
| 320 | |
| 321 or as | |
| 322 | |
| 323 complex (RM) * CM, | |
| 324 | |
| 10453 | 325 depending on the dimensions. The first form requires more |
| 326 temporaries and copying, but halves the FLOP count, which normally | |
| 327 brings better performance if RM has enough rows. Previously, the | |
| 328 second form was always used. | |
| 9664 | 329 |
| 11111 | 330 Matrix division is similarly affected. |
| 9664 | 331 |
| 10118 | 332 ** More efficient handling of triangular matrix factors returned from |
| 333 factorizations. The functions for computing QR, LU and Cholesky | |
| 334 factorizations will now automatically return the triangular matrix | |
| 335 factors with proper internal matrix_type set, so that it won't need | |
| 336 to be computed when the matrix is used for division. | |
| 9717 | 337 |
| 10118 | 338 ** The built-in `sum' function now handles the non-native summation |
| 339 (i.e., double precision sum of single or integer inputs) more | |
| 340 efficiently, avoiding a temporary conversion of the whole input | |
| 341 array to doubles. Further, `sum' can now accept an extra option | |
| 342 argument, using a compensated summation algorithm rather than a | |
| 343 straightforward sum, which significantly improves precision if lots | |
| 344 of cancellation occurs in the summation. | |
| 9717 | 345 |
| 10118 | 346 ** The built-in `bsxfun' function now uses optimized code for certain |
| 347 cases where built-in operator handles are passed in. Namely, the | |
| 348 optimizations concern the operators `plus', `minus', `times', | |
| 349 `ldivide', `rdivide', `power', `and', `or' (for logical arrays), | |
| 350 the relational operators `eq', `ne', `lt', `le', `gt', `ge', and the | |
| 351 functions `min' and `max'. Optimizations only apply when both | |
| 352 operands are of the same built-in class. Mixed real/complex and | |
| 353 single/double operations will first convert both operands to a | |
| 354 common type. | |
| 9745 | 355 |
| 10118 | 356 ** The `strfind' and `strrep' functions now have compiled |
| 357 implementations, facilitating significantly more efficient searching | |
| 358 and replacing in strings, especially with longer patterns. The code | |
| 359 of `strcat' has been vectorized and is now much more efficient when | |
| 360 many strings are concatenated. The `strcmpi' and `strncmpi' | |
| 361 functions are now built-in functions, providing better performance. | |
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362 |
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363 ** 'str2double' now has a compiled implementation and the API conforms |
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364 to Matlab. The additional Octave-specific features of returning a |
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365 boolean matrix indicating which elements were successfully converted |
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366 has been removed. |
| 10208 | 367 |
| 10453 | 368 ** Matlab-style ignoring input and output function arguments using |
| 11111 | 369 tilde (~) is now supported. Ignored output arguments may be |
| 370 detected from a function using the built-in function `isargout'. | |
| 371 For more details, consult the manual. | |
| 10886 | 372 |
| 10453 | 373 ** The list datatype, deprecated since the introduction of cells, has |
| 374 been removed. | |
| 10276 | 375 |
| 10453 | 376 ** The accumarray function has been optimized and is now significantly |
| 377 faster in certain important cases. | |
| 10054 | 378 |
| 10292 | 379 ** The behavior of isreal and isnumeric functions was changed to be more |
| 380 Matlab-compatible. | |
| 381 | |
| 10406 | 382 ** The integer math & conversion warnings (Octave:int-convert-nan, |
| 383 Octave:int-convert-non-int-val, Octave:int-convert-overflow, | |
| 11111 | 384 Octave:int-math-overflow) have been removed. |
| 10406 | 385 |
| 10453 | 386 ** rem and mod are now built-in functions. They also handle integer |
| 387 types efficiently using integer arithmetic. | |
| 10437 | 388 |
| 10536 | 389 ** Sparse indexing and indexed assignment has been mostly rewritten. |
| 390 Since Octave uses compressed column storage for sparse matrices, | |
| 391 major attention is devoted to operations manipulating whole columns. | |
| 392 Such operations are now significantly faster, as well as some other | |
| 393 important cases. | |
| 394 | |
| 395 Further, it is now possible to pre-allocate a sparse matrix and | |
| 396 subsequently fill it by assignments, provided they meet certain | |
| 397 conditions. For more information, consult the `spalloc' function, | |
| 398 which is no longer a mere dummy. Consequently, nzmax and nnz are no | |
| 11111 | 399 longer always equal in Octave. Octave may also produce a matrix |
| 400 with nnz < nzmax as a result of other operations, so you should | |
| 401 consistently use nnz unless you really want to use nzmax (i.e. the | |
| 402 space allocated for nonzero elements). | |
| 10536 | 403 |
| 404 Sparse concatenation is also affected, and concatenating sparse | |
| 405 matrices, especially larger collections, is now significantly more | |
| 11111 | 406 efficient. This applies to both the [] operator and the |
| 10536 | 407 cat/vertcat/horzcat functions. |
| 408 | |
| 11111 | 409 ** It is now possible to optionally employ the xGESDD LAPACK drivers |
| 410 for computing the singular value decomposition using svd(), instead | |
| 411 of the default xGESVD, using the configuration pseudo-variable | |
| 412 svd_driver. The xGESDD driver can be up to 6x times faster when | |
| 413 singular vectors are requested, but is reported to be somewhat less | |
| 10639 | 414 robust on highly ill-conditioned matrices. |
| 415 | |
| 416 ** Configuration pseudo-variables, such as page_screen_output or | |
| 417 confirm_recursive_rmdir (or the above mentioned svd_driver), now | |
| 418 accept a "local" option as second argument, requesting the change | |
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419 to be undone when the current function returns: |
| 10639 | 420 |
| 421 function [status, msg] = rm_rf (dir) | |
| 422 confirm_recursive_rmdir (false, "local"); | |
| 423 [status, msg] = rmdir (dir, "s"); | |
| 424 ... | |
| 425 endfunction | |
| 426 | |
| 427 Upon return, confirm_recursive_rmdir will be restored to the value | |
| 428 it had on entry to the function, even if there were subsequent | |
| 429 changes to the variable in function rm_rf or any of the functions | |
| 430 it calls. | |
| 431 | |
| 11111 | 432 ** pkg now accepts a -forge option for downloading and installing |
| 433 packages from Octave Forge automatically. For example, | |
| 10774 | 434 |
| 435 pkg install -forge general | |
| 436 | |
| 11111 | 437 will automatically download the latest release of the general |
| 438 package and attempt to install it. No automatic resolving of | |
| 439 dependencies is provided. Further, | |
| 10639 | 440 |
| 10774 | 441 pkg list -forge |
| 442 | |
| 443 can be used to list all available packages. | |
| 444 | |
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445 ** The internal data representation of structs has been completely |
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446 rewritten to make certain optimizations feasible. The field data |
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447 can now be shared between structs with equal keys but different |
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448 dimensions or values, making operations that preserve the fields |
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449 faster. Economized storage is now used for scalar structs (just |
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450 like most other scalars), making their usage more |
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451 memory-efficient. Certain array-like operations on structs |
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452 (concatenation, uniform cellfun, num2cell) have gained a |
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453 significant speed-up. Additionally, the octave_scalar_map class |
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454 now provides a simpler interface to work with scalar structs within |
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455 a C++ DLD function. |
| 10639 | 456 |
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457 ** Two new formats are available for displaying numbers: |
| 11111 | 458 |
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459 format short eng |
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460 format long eng |
| 11111 | 461 |
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462 Both display numbers in engineering notation, i.e., mantissa + |
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463 exponent where the exponent is a multiple of 3. |
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464 |
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465 ** The following functions are new in Octave 3.4: |
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466 accumdim erfcx nfields pqpnonneg uigetdir |
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467 bitpack fileread nth_element quadcc uigetfile |
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468 bitunpack fminbnd onCleanup randi uiputfile |
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469 blkmm fskipl pbaspect repelems uimenu |
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470 cbrt ifelse pie3 reset whitebg |
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471 curl ishermitian powerset rsf2csf |
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472 chop isindex ppder saveas |
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473 daspect luupdate ppint strread |
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474 divergence merge ppjumps textread |
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475 |
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476 ** Using the image function to view images with external programs such |
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477 as display, xv, and xloadimage is no longer supported. The |
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478 image_viewer function has also been removed. |
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479 |
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480 ** The behavior of struct assignments to non-struct values has been |
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481 changed. Previously, it was possible to overwrite an arbitrary |
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482 value: |
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483 |
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484 a = 1; |
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485 a.x = 2; |
| 10873 | 486 |
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487 This is no longer possible unless a is an empty matrix or cell |
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488 array. |
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489 |
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490 ** The dlmread function has been extended to allow specifying a custom |
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491 value for empty fields. |
| 10829 | 492 |
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493 ** The dlmread and dlmwrite functions have been modified to accept |
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494 file IDs (as returned by fopen) in addition to file names. |
| 11111 | 495 |
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496 ** Octave can now optimize away the interpreter overhead of an |
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497 anonymous function handle, if the function simply calls another |
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498 function or handle with some of its parameters bound to certain |
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499 values. Example: |
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500 |
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501 f = @(x) sum (x, 1); |
| 10966 | 502 |
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503 When f is called, the call is forwarded to @sum with the constant 1 |
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504 appended, and the anonymous function call does not occur on the |
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505 call stack. |
| 10829 | 506 |
| 12424 | 507 ** For compatibility with Matlab, mu2lin (x) is now equivalent to |
| 508 mu2lin (x, 0). | |
| 509 | |
| 510 ** The new function `history_control' may be used to control the way | |
| 511 command lines are added to the history list when Octave is using | |
| 512 readline for command-line editing. For example | |
| 513 | |
| 514 history_control ("ignoredups") | |
| 515 | |
| 516 tells Octave to avoid adding duplicate lines to the history list. | |
| 517 | |
| 518 ** Octave now uses the gnulib library for improved portability and to | |
| 519 avoid bugs in operating system functions. | |
| 520 | |
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521 ** Deprecated functions. |
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522 |
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523 The following functions were deprecated in Octave 3.0 and have been |
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524 removed from Octave 3.4. |
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525 |
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526 beta_cdf geometric_pdf pascal_pdf |
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527 beta_inv geometric_rnd pascal_rnd |
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528 beta_pdf hypergeometric_cdf poisson_cdf |
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529 beta_rnd hypergeometric_inv poisson_inv |
|
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530 binomial_cdf hypergeometric_pdf poisson_pdf |
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531 binomial_inv hypergeometric_rnd poisson_rnd |
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532 binomial_pdf intersection polyinteg |
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533 binomial_rnd is_bool setstr |
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534 chisquare_cdf is_complex struct_contains |
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535 chisquare_inv is_list struct_elements |
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536 chisquare_pdf is_matrix t_cdf |
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537 chisquare_rnd is_scalar t_inv |
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538 clearplot is_square t_pdf |
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539 clg is_stream t_rnd |
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540 com2str is_struct uniform_cdf |
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541 exponential_cdf is_symmetric uniform_inv |
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542 exponential_inv is_vector uniform_pdf |
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543 exponential_pdf isstr uniform_rnd |
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544 exponential_rnd lognormal_cdf weibcdf |
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545 f_cdf lognormal_inv weibinv |
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546 f_inv lognormal_pdf weibpdf |
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547 f_pdf lognormal_rnd weibrnd |
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548 f_rnd meshdom weibull_cdf |
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549 gamma_cdf normal_cdf weibull_inv |
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550 gamma_inv normal_inv weibull_pdf |
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551 gamma_pdf normal_pdf weibull_rnd |
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552 gamma_rnd normal_rnd wiener_rnd |
|
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553 geometric_cdf pascal_cdf |
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554 geometric_inv pascal_inv |
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555 |
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556 The following functions were deprecated in Octave 3.2 and will |
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557 be removed from Octave 3.6 (or whatever version is the second major |
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558 release after 3.2): |
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559 |
|
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560 create_set spcholinv splu |
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561 dmult spcumprod spmax |
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562 iscommand spcumsum spmin |
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563 israwcommand spdet spprod |
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564 lchol spdiag spqr |
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565 loadimage spfind spsum |
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566 mark_as_command sphcat spsumsq |
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567 mark_as_rawcommand spinv spvcat |
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568 spatan2 spkron str2mat |
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569 spchol splchol unmark_command |
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570 spchol2inv split unmark_rawcommand |
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571 |
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572 The following functions have been deprecated in Octave 3.4 and will |
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573 be removed from Octave 3.8 (or whatever version is the second major |
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574 release after 3.4): |
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575 |
|
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576 autocor cellidx gammai krylovb saveimage |
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577 autocov dispatch glpkmex perror strerror |
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578 betai fstat is_global replot values |
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579 |
|
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580 Summary of important user-visible changes for version 3.2: |
| 5913 | 581 --------------------------------------------------------- |
| 2452 | 582 |
| 8737 | 583 ** Compatibility with Matlab graphics has been improved. |
| 6329 | 584 |
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585 The hggroup object and associated listener callback functions have |
| 8737 | 586 been added allowing the inclusion of group objects. Data sources |
|
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587 have been added to these group objects such that |
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588 |
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589 x = 0:0.1:10; |
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590 y = sin (x); |
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591 plot (x, y, "ydatasource", "y"); |
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592 for i = 1 : 100 |
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593 pause(0.1) |
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594 y = sin (x + 0.1 * i); |
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595 refreshdata(); |
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596 endfor |
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597 |
| 8737 | 598 works as expected. This capability has be used to introduce |
|
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599 stem-series, bar-series, etc., objects for better Matlab |
| 8737 | 600 compatibility. |
| 601 | |
| 602 ** New graphics functions: | |
| 603 | |
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604 addlistener ezcontour gcbo refresh |
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605 addproperty ezcontourf ginput refreshdata |
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606 allchild ezmesh gtext specular |
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607 available_graphics_toolkits ezmeshc intwarning surfl |
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608 graphics_toolkit ezplot ishghandle trisurf |
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609 cla ezplot3 isocolors waitforbuttonpress |
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610 clabel ezpolar isonormals |
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611 comet ezsurf isosurface |
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612 dellistener findall linkprop |
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613 diffuse gcbf plotmatrix |
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614 |
| 8737 | 615 ** New experimental OpenGL/FLTK based plotting system. |
| 616 | |
| 617 An experimental plotting system based on OpenGL and the FLTK | |
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618 toolkit is now part of Octave. This graphics toolkit is disabled by |
| 8737 | 619 default. You can switch to using it with the command |
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620 |
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621 graphics_toolkit ("fltk") |
|
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Add data sources and line series
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|
622 |
|
3b53b25e2550
Add data sources and line series
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diff
changeset
|
623 for all future figures or for a particular figure with the command |
|
3b53b25e2550
Add data sources and line series
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|
624 |
|
11576
8ac9687dbe9f
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John W. Eaton <jwe@octave.org>
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11562
diff
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|
625 graphics_toolkit (h, "fltk") |
|
8070
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changeset
|
626 |
| 11139 | 627 where "h" is a valid figure handle. |
|
8070
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Add data sources and line series
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diff
changeset
|
628 |
| 8737 | 629 ** Functions providing direct access to gnuplot have been removed. |
| 630 | |
|
7990
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Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
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diff
changeset
|
631 The functions __gnuplot_plot__, __gnuplot_set__, __gnuplot_raw__, |
|
86dae6e5b83c
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|
632 __gnuplot_show__, __gnuplot_replot__, __gnuplot_splot__, |
| 8737 | 633 __gnuplot_save_data__ and __gnuplot_send_inline_data__ have been |
| 634 removed from Octave. These function were incompatible with the | |
| 635 high level graphics handle code. | |
| 6329 | 636 |
| 8885 | 637 ** The Control, Finance and Quaternion functions have been removed. |
| 638 | |
| 639 These functions are now available as separate packages from | |
| 640 | |
| 641 http://octave.sourceforge.net/packages.html | |
| 642 | |
| 643 and can be reinstalled using the Octave package manager (see | |
| 644 the pkg function). | |
| 645 | |
| 646 ** Specific sparse matrix functions removed. | |
| 647 | |
| 648 The following functions, which handled only sparse matrices have | |
| 649 been removed. Instead of calling these functions directly, you | |
| 650 should use the corresponding function without the "sp" prefix. | |
| 8737 | 651 |
| 8885 | 652 spatan2 spcumsum spkron spprod |
| 653 spchol spdet splchol spqr | |
| 654 spchol2inv spdiag splu spsum | |
| 655 spcholinv spfind spmax spsumsqk | |
| 656 spcumprod spinv spmin | |
| 657 | |
| 658 ** Improvements to the debugger. | |
| 659 | |
| 660 The interactive debugging features have been improved. Stopping | |
| 661 on statements with dbstop should work correctly now. Stepping | |
| 662 into and over functions, and stepping one statement at a time | |
| 663 (with dbstep) now works. Moving up and down the call stack with | |
| 664 dbup and dbdown now works. The dbstack function is now available | |
| 665 to print the current function call stack. The new dbquit function | |
| 666 is available to exit the debugging mode. | |
| 667 | |
| 668 ** Improved traceback error messages. | |
| 669 | |
| 670 Traceback error messages are much more concise and easier to | |
| 671 understand. They now display information about the function call | |
| 672 stack instead of the stack of all statements that were active at | |
| 673 the point of the error. | |
|
8014
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|
674 |
| 8737 | 675 ** Object Oriented Programming. |
|
8405
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|
676 |
| 8737 | 677 Octave now includes OOP features and the user can create their own |
| 678 class objects and overloaded functions and operators. For | |
| 679 example, all methods of a class called "myclass" will be found in | |
| 680 a directory "@myclass" on the users path. The class specific | |
| 681 versions of functions and operators take precedence over the | |
| 682 generic versions of these functions. | |
| 683 | |
| 684 New functions related to OOP include | |
| 7189 | 685 |
| 8737 | 686 class inferiorto isobject loadobj methods superiorto |
| 687 | |
| 688 See the Octave manual for more details. | |
| 7038 | 689 |
| 8747 | 690 ** Parsing of Command-style Functions. |
| 691 | |
| 692 Octave now parses command-style functions without needing to first | |
| 693 declare them with "mark_as_command". The rules for recognizing a | |
| 694 command-style function calls are | |
| 695 | |
| 696 * A command must appear as the first word in a statement, | |
| 697 followed by a space. | |
| 698 | |
| 699 * The first character after the space must not be '=' or '(' | |
| 700 | |
| 701 * The next token after the space must not look like a binary | |
| 702 operator. | |
| 703 | |
| 704 These rules should be mostly compatible with the way Matlab parses | |
| 705 command-style function calls and allow users to define commands in | |
| 706 .m files without having to mark them as commands. | |
| 707 | |
| 708 Note that previous versions of Octave allowed expressions like | |
| 709 | |
| 710 x = load -text foo.dat | |
| 711 | |
| 712 but an expression like this will now generate a parse error. In | |
| 713 order to assign the value returned by a function to a variable, | |
| 714 you must use the normal function call syntax: | |
| 715 | |
| 716 x = load ("-text", "foo.dat"); | |
| 717 | |
| 8737 | 718 ** Block comments. |
| 719 | |
| 8747 | 720 Commented code can be between matching "#{" and "#}" or "%{" and |
| 721 "%}" markers, even if the commented code spans several line. This | |
| 722 allows blocks code to be commented, without needing to comment | |
| 723 each line. For example, | |
| 5814 | 724 |
| 8747 | 725 function [s, t] = func (x, y) |
| 726 s = 2 * x; | |
| 727 #{ | |
| 728 s *= y; | |
| 729 t = y + x; | |
| 730 #} | |
|
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David Bateman <dbateman@free.fr>
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diff
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|
731 endfunction |
| 5814 | 732 |
| 8747 | 733 the lines "s *= y;" and "t = y + x" will not be executed. |
| 8737 | 734 |
|
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|
735 ** If any subfunction in a file ends with "end" or "endfunction", then |
|
5252f12537f8
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|
736 they all must end that way. Previously, Octave accepted |
|
5252f12537f8
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|
737 |
|
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|
738 function main () |
|
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|
739 ... |
|
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diff
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|
740 # no endfunction here. |
|
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|
741 function sub () |
|
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|
742 ... |
|
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|
743 endfunction |
|
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|
744 |
|
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diff
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|
745 but this is no longer allowed. |
|
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diff
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|
746 |
| 8737 | 747 ** Special treatment in the parser of expressions like "a' * b". |
| 2452 | 748 |
| 8737 | 749 In these cases the transpose is no longer explicitly formed and |
| 750 BLAS libraries are called with the transpose flagged, | |
| 751 significantly improving performance for these kinds of | |
| 752 operations. | |
|
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diff
changeset
|
753 |
| 8737 | 754 ** Single Precision data type. |
| 2452 | 755 |
| 8737 | 756 Octave now includes a single precision data type. Single |
| 757 precision variables can be created with the "single" command, or | |
|
9034
52515efc50c0
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Rik <rdrider0-list@yahoo.com>
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diff
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|
758 from functions like ones, eye, etc. For example, |
| 5995 | 759 |
| 8737 | 760 single (1) |
| 761 ones (2, 2, "single") | |
| 762 zeros (2, 2, "single") | |
| 763 eye (2, 2, "single") | |
| 764 Inf (2, 2, "single") | |
| 765 NaN (2, 2, "single") | |
| 766 NA (2, 2, "single") | |
| 7279 | 767 |
| 8737 | 768 all create single precision variables. For compatibility with |
| 769 Matlab, mixed double/single precision operators and functions | |
| 770 return single precision types. | |
| 771 | |
| 772 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
|
773 representation of the double precision NA value has changed, and |
|
86dae6e5b83c
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David Bateman <dbateman@free.fr>
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diff
changeset
|
774 so users that make use of data generated by Octave with R or |
|
86dae6e5b83c
Initial update of NEWS for 3.2 release
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parents:
7279
diff
changeset
|
775 visa-versa are warned that compatibility might not be assured. |
| 7279 | 776 |
| 8737 | 777 ** Improved array indexing. |
| 778 | |
| 779 The underlying code used for indexing of arrays has been | |
|
9034
52515efc50c0
Documentation cleanup on NEWS file
Rik <rdrider0-list@yahoo.com>
parents:
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diff
changeset
|
780 completely rewritten and indexing is now significantly faster. |
| 8737 | 781 |
| 8755 | 782 ** Improved memory management. |
| 783 | |
| 784 Octave will now attempt to share data in some cases where previously | |
| 785 a copy would be made, such as certain array slicing operations or | |
|
9031
1052a66078cf
Documentation cleanup of top-level Octave directory (READMEs, INSTALL)
Rik <rdrider0-list@yahoo.com>
parents:
8932
diff
changeset
|
786 conversions between cells, structs and cs-lists. This usually reduces |
| 8755 | 787 both time and memory consumption. |
| 9128 | 788 Also, Octave will now attempt to detect and optimize usage of a vector |
| 789 as a stack, when elements are being repeatedly inserted at/removed from | |
| 790 the end of the vector. | |
| 8755 | 791 |
| 8738 | 792 ** Improved performance for reduction operations. |
| 793 | |
| 8755 | 794 The performance of the sum, prod, sumsq, cumsum, cumprod, any, all, |
| 795 max and min functions has been significantly improved. | |
| 8738 | 796 |
| 9006 | 797 ** Sorting and searching. |
| 798 | |
| 799 The performance of sort has been improved, especially when sorting | |
| 10453 | 800 indices are requested. An efficient built-in issorted |
| 801 implementation was added. The sortrows function now uses a more | |
|
12702
013cd94d8d7f
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John Bradshaw <john@johnbradshaw.org>
parents:
12698
diff
changeset
|
802 efficient algorithm, especially in the homogeneous case. The lookup |
| 10453 | 803 function is now a built-in function performing a binary search, |
| 804 optimized for long runs of close elements. Lookup also works with | |
| 805 cell arrays of strings. | |
| 9006 | 806 |
| 807 ** Range arithmetics | |
| 808 | |
| 10453 | 809 For some operations on ranges, Octave will attempt to keep the |
| 810 result as a range. These include negation, adding a scalar, | |
| 811 subtracting a scalar, and multiplying by a scalar. Ranges with zero | |
| 812 increment are allowed and can be constructed using the built-in | |
| 813 function `ones'. | |
| 9006 | 814 |
| 815 ** Various performance improvements. | |
| 816 | |
| 10453 | 817 Performance of a number of other built-in operations and functions |
| 818 was improved, including: | |
| 9006 | 819 |
| 820 * logical operations | |
| 821 * comparison operators | |
| 822 * element-wise power | |
| 823 * accumarray | |
| 824 * cellfun | |
| 825 * isnan | |
| 826 * isinf | |
| 827 * isfinite | |
| 828 * nchoosek | |
| 829 * repmat | |
| 830 * strcmp | |
| 831 | |
| 8737 | 832 ** 64-bit integer arithmetic. |
| 833 | |
| 834 Arithmetic with 64-bit integers (int64 and uint64 types) is fully | |
| 835 supported, with saturation semantics like the other integer types. | |
| 836 Performance of most integer arithmetic operations has been | |
| 837 improved by using integer arithmetic directly. Previously, Octave | |
| 838 performed integer math with saturation semantics by converting the | |
| 839 operands to double precision, performing the operation, and then | |
| 840 converting the result back to an integer value, truncating if | |
| 841 necessary. | |
| 842 | |
| 8885 | 843 ** Diagonal and permutation matrices. |
| 844 | |
| 845 The interpreter can now treat diagonal and permutation matrices as | |
| 846 special objects that store only the non-zero elements, rather than | |
| 847 general full matrices. Therefore, it is now possible to construct | |
| 848 and use these matrices in linear algebra without suffering a | |
| 849 performance penalty due to storing large numbers of zero elements. | |
| 850 | |
| 851 ** Improvements to fsolve. | |
| 852 | |
| 853 The fsolve function now accepts an option structure argument (see | |
| 854 also the optimset function). The INFO values returned from fsolve | |
| 855 have changed to be compatible with Matlab's fsolve function. | |
| 856 Additionally, fsolve is now able to solve overdetermined systems, | |
| 857 complex-differentiable complex systems, systems with a sparse | |
| 858 jacobian and can work in single precision if given single precision | |
|
9031
1052a66078cf
Documentation cleanup of top-level Octave directory (READMEs, INSTALL)
Rik <rdrider0-list@yahoo.com>
parents:
8932
diff
changeset
|
859 inputs. It can also be called recursively. |
| 8885 | 860 |
| 8737 | 861 ** Improvements to the norm function. |
| 862 | |
| 863 The norm function is now able to compute row or column norms of a | |
| 864 matrix in a single call, as well as general matrix p-norms. | |
| 865 | |
| 866 ** New functions for computing some eigenvalues or singular values. | |
| 867 | |
| 868 The eigs and svds functions have been included in Octave. These | |
| 869 functions require the ARPACK library (now distributed under a | |
| 870 GPL-compatible license). | |
| 871 | |
| 872 ** New QR and Cholesky factorization updating functions. | |
|
8370
34960ba08a81
document more new features in the NEWS file
Jaroslav Hajek <highegg@gmail.com>
parents:
8292
diff
changeset
|
873 |
| 8737 | 874 choldelete cholshift qrdelete qrshift |
| 875 cholinsert cholupdate qrinsert qrupdate | |
| 876 | |
| 877 ** New quadrature functions. | |
| 878 | |
| 879 dblquad quadgk quadv triplequad | |
| 880 | |
| 8885 | 881 ** New functions for reading and writing images. |
| 882 | |
| 883 The imwrite and imread functions have been included in Octave. | |
| 884 These functions require the GraphicsMagick library. The new | |
| 885 function imfinfo provides information about an image file (size, | |
| 886 type, colors, etc.) | |
| 887 | |
|
9215
1500d0197484
allow multiple input event hook functions to be installed simultaneously
John W. Eaton <jwe@octave.org>
parents:
9128
diff
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|
888 ** The input_event_hook function has been replaced by the pair of |
|
1500d0197484
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John W. Eaton <jwe@octave.org>
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9128
diff
changeset
|
889 functions add_input_event_hook and remove_input_event_hook so that |
|
1500d0197484
allow multiple input event hook functions to be installed simultaneously
John W. Eaton <jwe@octave.org>
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9128
diff
changeset
|
890 more than one hook function may be installed at a time. |
|
1500d0197484
allow multiple input event hook functions to be installed simultaneously
John W. Eaton <jwe@octave.org>
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diff
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|
891 |
| 8737 | 892 ** Other miscellaneous new functions. |
|
8370
34960ba08a81
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Jaroslav Hajek <highegg@gmail.com>
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diff
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|
893 |
|
8932
2d0f8692a82e
Add the 'histc' function
Soren Hauberg <hauberg@gmail.com>
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8888
diff
changeset
|
894 addtodate hypot reallog |
|
2d0f8692a82e
Add the 'histc' function
Soren Hauberg <hauberg@gmail.com>
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8888
diff
changeset
|
895 bicgstab idivide realpow |
| 9006 | 896 cellslices info realsqrt |
| 897 cgs interp1q rectint | |
| 898 command_line_path isdebugmode regexptranslate | |
| 899 contrast isfloat restoredefaultpath | |
| 900 convn isstrprop roundb | |
| 901 cummin log1p rundemos | |
| 902 cummax lsqnonneg runlength | |
| 903 datetick matlabroot saveobj | |
| 904 display namelengthmax spaugment | |
| 905 expm1 nargoutchk strchr | |
| 906 filemarker pathdef strvcat | |
| 907 fstat perl subspace | |
| 908 full prctile symvar | |
| 909 fzero quantile treelayout | |
| 910 genvarname re_read_readline_init_file validatestring | |
| 911 histc | |
|
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|
912 |
| 8885 | 913 ** Changes to strcat. |
| 914 | |
| 915 The strcat function is now compatible with Matlab's strcat | |
| 916 function, which removes trailing whitespace when concatenating | |
| 917 character strings. For example | |
| 918 | |
| 919 strcat ('foo ', 'bar') | |
| 920 ==> 'foobar' | |
| 921 | |
| 922 The new function cstrcat provides the previous behavior of | |
| 923 Octave's strcat. | |
| 924 | |
| 925 ** Improvements to the help functions. | |
| 926 | |
|
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Rik <rdrider0-list@yahoo.com>
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|
927 The help system has been mostly re-implemented in .m files to make |
| 8885 | 928 it easier to modify. Performance of the lookfor function has been |
| 929 greatly improved by caching the help text from all functions that | |
| 930 are distributed with Octave. The pkg function has been modified | |
| 931 to generate cache files for external packages when they are | |
| 932 installed. | |
| 933 | |
|
8888
0c7b0049c023
mark create_set as deprecated in 3.2, not 3.0
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|
934 ** Deprecated functions. |
|
0c7b0049c023
mark create_set as deprecated in 3.2, not 3.0
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|
935 |
|
0c7b0049c023
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|
936 The following functions were deprecated in Octave 3.0 and will be |
|
11112
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|
937 removed from Octave 3.4 (or whatever version is the second major |
|
8888
0c7b0049c023
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|
938 release after 3.0): |
|
0c7b0049c023
mark create_set as deprecated in 3.2, not 3.0
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|
939 |
|
11112
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|
940 beta_cdf geometric_pdf pascal_pdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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diff
changeset
|
941 beta_inv geometric_rnd pascal_rnd |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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11111
diff
changeset
|
942 beta_pdf hypergeometric_cdf poisson_cdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
943 beta_rnd hypergeometric_inv poisson_inv |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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changeset
|
944 binomial_cdf hypergeometric_pdf poisson_pdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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changeset
|
945 binomial_inv hypergeometric_rnd poisson_rnd |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
946 binomial_pdf intersection polyinteg |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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changeset
|
947 binomial_rnd is_bool setstr |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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changeset
|
948 chisquare_cdf is_complex struct_contains |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
949 chisquare_inv is_list struct_elements |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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diff
changeset
|
950 chisquare_pdf is_matrix t_cdf |
|
8ea4cf59c41b
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951 chisquare_rnd is_scalar t_inv |
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952 clearplot is_square t_pdf |
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953 clg is_stream t_rnd |
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954 com2str is_struct uniform_cdf |
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955 exponential_cdf is_symmetric uniform_inv |
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956 exponential_inv is_vector uniform_pdf |
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957 exponential_pdf isstr uniform_rnd |
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958 exponential_rnd lognormal_cdf weibcdf |
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959 f_cdf lognormal_inv weibinv |
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960 f_inv lognormal_pdf weibpdf |
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961 f_pdf lognormal_rnd weibrnd |
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962 f_rnd meshdom weibull_cdf |
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963 gamma_cdf normal_cdf weibull_inv |
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964 gamma_inv normal_inv weibull_pdf |
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965 gamma_pdf normal_pdf weibull_rnd |
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966 gamma_rnd normal_rnd wiener_rnd |
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8888
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967 geometric_cdf pascal_cdf |
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968 geometric_inv pascal_inv |
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969 |
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970 The following functions are now deprecated in Octave 3.2 and will |
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11112
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971 be removed from Octave 3.6 (or whatever version is the second major |
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972 release after 3.2): |
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973 |
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974 create_set spcholinv spmax |
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975 dmult spcumprod spmin |
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976 iscommand spcumsum spprod |
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977 israwcommand spdet spqr |
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978 lchol spdiag spsum |
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979 loadimage spfind spsumsq |
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980 mark_as_command spinv str2mat |
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981 mark_as_rawcommand spkron unmark_command |
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982 spatan2 splchol unmark_rawcommand |
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983 spchol split |
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984 spchol2inv splu |
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985 |
|
7990
86dae6e5b83c
Initial update of NEWS for 3.2 release
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986 See NEWS.3 for old news. |