Mercurial > hg > octave-lyh
annotate NEWS @ 12981:4ec4096f65d1
doc: State that required input is cellstr, not cell, for strtrim and deblank (Bug #34038)
NEWS: Note incompatible changes to certain string functions since 3.4.2
deblank.m, strtrim.m: Document that cellstr, not cell, is required input.
| author | Rik <octave@nomad.inbox5.com> |
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| date | Sun, 21 Aug 2011 21:44:39 -0700 |
| parents | fe6e2afcd9ee |
| children | 7aa9cb7aaa32 |
| 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 ** strread, textscan, and textread have been completely revamped. |
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7 |
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8 They now support nearly all Matlab functionality including: |
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9 |
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10 * ML-compatible whitespace and delimiter defaults |
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11 |
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12 * ML-compatible options: 'whitespace', treatasempty', |
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13 format string repeat count, user-specified comment style, uneven-length |
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14 output arrays, %n and %u conversion specifiers (provisionally) |
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15 |
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16 ** Certain string functions have been modified for greater Matlab compatibility |
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17 and for 15X greater performance when operating on cell array of strings. |
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18 |
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19 deblank : Now requires character or cellstr input |
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20 strtrim : Now requires character or cellstr input. |
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21 No longer trims nulls ("\0") from string for ML compatibility. |
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22 strmatch: Follows documentation precisely and ignores trailing spaces |
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23 in pattern and in string. Note that Matlab documents this |
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24 behavior but the implementation does *not* always follow it. |
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25 |
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26 ** New functions added. |
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27 |
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28 iscolumn |
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29 issrow |
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30 zscore |
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31 |
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32 ** Deprecated functions. |
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33 |
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34 The following functions were deprecated in Octave 3.2 and have been |
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35 removed from Octave 3.6. |
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36 |
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37 create_set spcholinv splu |
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38 dmult spcumprod spmax |
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39 iscommand spcumsum spmin |
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40 israwcommand spdet spprod |
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41 lchol spdiag spqr |
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42 loadimage spfind spsum |
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43 mark_as_command sphcat spsumsq |
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44 mark_as_rawcommand spinv spvcat |
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45 spatan2 spkron str2mat |
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46 spchol splchol unmark_command |
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47 spchol2inv split unmark_rawcommand |
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48 |
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49 The following functions have been deprecated in Octave 3.6 and will |
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50 be removed from Octave 3.10 (or whatever version is the second major |
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51 release after 3.6): |
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52 |
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53 cut is_duplicate_entry |
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54 cor polyderiv |
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55 corrcoef studentize |
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56 __error_text__ sylvester_matrix |
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57 error_text |
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58 |
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59 Summary of important user-visible changes for version 3.4.2: |
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60 ----------------------------------------------------------- |
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61 |
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62 ** Octave 3.2.4 fixes some minor installation problems that affected |
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63 version 3.4.1. |
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64 |
| 12709 | 65 Summary of important user-visible changes for version 3.4.1: |
| 66 ----------------------------------------------------------- | |
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67 |
| 12709 | 68 ** Octave 3.4.1 is primarily a bug fixing release. |
| 69 | |
| 70 ** IMPORTANT note about binary incompatibility in this release: | |
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71 |
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72 Binary compatibility for all 3.4.x releases was originally planned, |
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73 but this is impossible for the 3.4.1 release due to a bug in the way |
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74 shared libraries were built in Octave 3.4.0. Because of this bug, |
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75 .oct files built for Octave 3.4.0 must be recompiled before they |
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76 will work with Octave 3.4.1. |
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77 |
| 12709 | 78 Given that there would be binary incompatibilities with shared |
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79 libraries going from Octave 3.4.0 to 3.4.1, the following |
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80 incompatible changes were also made in this release: |
| 12709 | 81 |
| 82 * The Perl Compatible Regular Expression (PCRE) library is now | |
| 83 required to build Octave. | |
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84 |
| 12712 | 85 * Octave's libraries and .oct files are now installed in |
| 86 subdirectories of $libdir instead of $libexecdir. | |
| 87 | |
| 12709 | 88 Any future Octave 3.4.x release versions should remain binary |
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89 compatible with Octave 3.4.1 as proper library versioning is now |
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90 being used as recommended by the libtool manual. |
| 12709 | 91 |
| 92 ** The following functions have been deprecated in Octave 3.4.1 and will | |
| 93 be removed from Octave 3.8 (or whatever version is the second major | |
| 94 release after 3.4): | |
| 95 | |
| 96 cquad is_duplicate_entry perror strerror | |
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97 |
| 12709 | 98 ** The following functions are new in 3.4.1: |
| 99 | |
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100 colstyle gmres iscolumn isrow mgorth nproc rectangle |
| 12709 | 101 |
| 102 ** The get_forge_pkg function is now private. | |
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103 |
| 12709 | 104 ** The rectangle_lw, rectangle_sw, triangle_lw, and triangle_sw |
| 105 functions are now private. | |
| 106 | |
| 107 ** The logistic_regression_derivatives and logistic_regression_likelihood | |
| 108 functions are now private. | |
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109 |
| 12739 | 110 ** ChangeLog files in the Octave sources are no longer maintained |
| 111 by hand. Instead, there is a single ChangeLog file generated from | |
| 112 the Mercurial version control commit messages. Older ChangeLog | |
| 113 information can be found in the etc/OLD-ChangeLogs directory in the | |
| 114 source distribution. | |
| 115 | |
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116 Summary of important user-visible changes for version 3.4: |
| 9352 | 117 --------------------------------------------------------- |
| 118 | |
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119 ** BLAS and LAPACK libraries are now required to build Octave. The |
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120 subset of the reference BLAS and LAPACK libraries has been removed |
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121 from the Octave sources. |
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122 |
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123 ** The ARPACK library is now distributed with Octave so it no longer |
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124 needs to be available as an external dependency when building |
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125 Octave. |
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126 |
| 10118 | 127 ** The `lookup' function was extended to be more useful for |
| 128 general-purpose binary searching. Using this improvement, the | |
| 129 ismember function was rewritten for significantly better | |
| 130 performance. | |
| 9352 | 131 |
| 132 ** Real, integer and logical matrices, when used in indexing, will now | |
| 133 cache the internal index_vector value (zero-based indices) when | |
| 134 successfully used as indices, eliminating the conversion penalty for | |
| 10118 | 135 subsequent indexing by the same matrix. In particular, this means it |
| 136 is no longer needed to avoid repeated indexing by logical arrays | |
| 137 using find for performance reasons. | |
| 9888 | 138 |
| 10118 | 139 ** Logical matrices are now treated more efficiently when used as |
| 140 indices. Octave will keep the index as a logical mask unless the | |
| 141 ratio of true elements is small enough, using a specialized | |
| 142 code. Previously, all logical matrices were always first converted | |
| 143 to index vectors. This results in savings in both memory and | |
| 144 computing time. | |
| 9480 | 145 |
| 10118 | 146 ** The `sub2ind' and `ind2sub' functions were reimplemented as compiled |
| 147 functions for better performance. These functions are now faster, | |
| 148 can deliver more economized results for ranges, and can reuse the | |
| 149 index cache mechanism described in previous paragraph. | |
| 150 | |
| 151 ** The built-in function equivalents to associative operators (`plus', | |
| 152 `times', `mtimes', `and', and `or') have been extended to accept | |
| 153 multiple arguments. This is especially useful for summing | |
| 154 (multiplying, etc.) lists of objects (of possibly distinct types): | |
| 9408 | 155 |
| 9449 | 156 matrix_sum = plus (matrix_list{:}); |
| 157 | |
| 10118 | 158 ** An FTP object type based on libcurl has been implemented. These |
| 159 objects allow ftp connections, downloads and uploads to be | |
| 160 managed. For example, | |
| 9880 | 161 |
| 10118 | 162 fp = ftp ("ftp.octave.org); |
| 163 cd (fp, "gnu/octave"); | |
| 164 mget (fp, "octave-3.2.3.tar.bz2"); | |
| 165 close (fp); | |
| 9880 | 166 |
| 10118 | 167 ** The default behavior of `assert (observed, expected)' has been |
| 168 relaxed to employ less strict checking that does not require the | |
| 169 internals of the values to match. This avoids previously valid | |
| 170 tests from breaking due to new internal classes introduced in future | |
| 171 Octave versions. | |
| 9449 | 172 |
| 173 For instance, all of these assertions were true in Octave 3.0.x | |
| 174 but false in 3.2.x due to new optimizations and improvements: | |
| 175 | |
| 176 assert (2*linspace (1, 5, 5), 2*(1:5)) | |
| 177 assert (zeros (0, 0), []) | |
| 178 assert (2*ones (1, 5), (2) (ones (1,5))) | |
| 9462 | 179 |
| 10118 | 180 ** The behavior of library functions `ismatrix', `issquare', and |
| 181 `issymmetric' has been changed for better consistency. | |
| 9873 | 182 |
| 10292 | 183 * The `ismatrix' function now returns true for all numeric, |
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184 logical and character 2-D or N-D matrices. Previously, `ismatrix' |
| 10292 | 185 returned false if the first or second dimension was zero. |
| 186 Hence, `ismatrix ([])' was false, | |
| 187 while `ismatrix (zeros (1,2,0))' was true. | |
| 9873 | 188 |
| 10118 | 189 * The `issquare' function now returns a logical scalar, and is |
| 190 equivalent to the expression | |
| 191 | |
| 192 ismatrix (x) && ndims (x) == 2 && rows (x) == columns (x) | |
| 193 | |
| 194 The dimension is no longer returned. As a result, `issquare ([])' | |
| 195 now yields true. | |
| 9873 | 196 |
| 10118 | 197 * The `issymmetric' function now checks for symmetry instead of |
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198 Hermitianness. For the latter, ishermitian was created. Also, |
| 10118 | 199 logical scalar is returned rather than the dimension, so |
| 200 `issymmetric ([])' is now true. | |
| 9873 | 201 |
| 10118 | 202 ** Function handles are now aware of overloaded functions. If a |
| 203 function is overloaded, the handle determines at the time of its | |
| 204 reference which function to call. A non-overloaded version does not | |
| 205 need to exist. | |
| 9873 | 206 |
| 10118 | 207 ** Overloading functions for built-in classes (double, int8, cell, |
| 208 etc.) is now compatible with Matlab. | |
| 9408 | 209 |
| 10323 | 210 ** Function handles can now be compared with the == and != operators, |
| 211 as well as the `isequal' function. | |
| 212 | |
| 10118 | 213 ** Performance of concatenation (using []) and the functions `cat', |
| 214 `horzcat', and `vertcat' has been improved for multidimensional | |
| 215 arrays. | |
| 10117 | 216 |
| 9547 | 217 ** The operation-assignment operators +=, -=, *= and /= now behave more |
| 10118 | 218 efficiently in certain cases. For instance, if M is a matrix and S a |
| 219 scalar, then the statement | |
| 9547 | 220 |
| 10118 | 221 M += S; |
| 9547 | 222 |
| 10118 | 223 will operate on M's data in-place if it is not shared by another |
| 224 variable, usually increasing both time and memory efficiency. | |
| 9547 | 225 |
| 9558 | 226 Only selected common combinations are affected, namely: |
| 9547 | 227 |
| 228 matrix += matrix | |
| 229 matrix -= matrix | |
| 9558 | 230 matrix .*= matrix |
| 231 matrix ./= matrix | |
| 232 | |
| 9547 | 233 matrix += scalar |
| 234 matrix -= scalar | |
| 235 matrix *= scalar | |
| 236 matrix /= scalar | |
| 9558 | 237 |
| 9552 | 238 logical matrix |= logical matrix |
| 239 logical matrix &= logical matrix | |
| 9547 | 240 |
| 10118 | 241 where matrix and scalar belong to the same class. The left-hand |
| 242 side must be a simple variable reference. | |
| 9888 | 243 |
| 10118 | 244 Moreover, when unary operators occur in expressions, Octave will |
| 245 also try to do the operation in-place if it's argument is a | |
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246 temporary expression. |
| 9589 | 247 |
| 10118 | 248 ** The effect of comparison operators (<, >, <=, and >=) applied to |
| 249 complex numbers has changed to be consistent with the strict | |
| 250 ordering defined by the `max', `min', and `sort' functions. More | |
| 251 specifically, complex numbers are compared by lexicographical | |
| 252 comparison of the pairs `[abs(z), arg(z)]'. Previously, only real | |
| 253 parts were compared; this can be trivially achieved by wrapping the | |
| 254 operands in real(). | |
| 9547 | 255 |
| 10118 | 256 ** The automatic simplification of complex computation results has |
| 257 changed. Octave will now simplify any complex number with a zero | |
| 258 imaginary part or any complex matrix with all elements having zero | |
| 259 imaginary part to a real value. Previously, this was done only for | |
| 260 positive zeros. Note that the behavior of the complex function is | |
| 261 unchanged and it still produces a complex value even if the | |
| 262 imaginary part is zero. | |
| 9826 | 263 |
| 10118 | 264 ** As a side effect of code refactoring in liboctave, the binary |
| 265 logical operations are now more easily amenable to compiler | |
| 266 optimizations and are thus significantly faster. | |
| 9595 | 267 |
| 10118 | 268 ** Octave now allows user-defined `subsasgn' methods to optimize out |
| 269 redundant copies. For more information, see the manual. | |
| 9595 | 270 |
| 10453 | 271 ** More efficient matrix division handling. Octave is now able to |
| 10118 | 272 handle the expressions |
| 9664 | 273 |
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274 M' \ V |
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275 M.' \ V |
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276 V / M |
| 9664 | 277 |
| 10118 | 278 (M is a matrix and V is a vector) more efficiently in certain cases. |
| 279 In particular, if M is triangular, all three expressions will be | |
| 280 handled by a single call to xTRTRS (from LAPACK), with appropriate | |
| 10453 | 281 flags. Previously, all three expressions required a physical |
| 10118 | 282 transpose of M. |
| 9664 | 283 |
| 10118 | 284 ** More efficient handling of certain mixed real-complex matrix |
| 285 operations. For instance, if RM is a real matrix and CM a complex | |
| 286 matrix, | |
| 9664 | 287 |
| 10118 | 288 RM * CM |
| 9664 | 289 |
| 290 can now be evaluated either as | |
| 291 | |
| 292 complex (RM * real (CM), RM * imag (CM)) | |
| 293 | |
| 294 or as | |
| 295 | |
| 296 complex (RM) * CM, | |
| 297 | |
| 10453 | 298 depending on the dimensions. The first form requires more |
| 299 temporaries and copying, but halves the FLOP count, which normally | |
| 300 brings better performance if RM has enough rows. Previously, the | |
| 301 second form was always used. | |
| 9664 | 302 |
| 11111 | 303 Matrix division is similarly affected. |
| 9664 | 304 |
| 10118 | 305 ** More efficient handling of triangular matrix factors returned from |
| 306 factorizations. The functions for computing QR, LU and Cholesky | |
| 307 factorizations will now automatically return the triangular matrix | |
| 308 factors with proper internal matrix_type set, so that it won't need | |
| 309 to be computed when the matrix is used for division. | |
| 9717 | 310 |
| 10118 | 311 ** The built-in `sum' function now handles the non-native summation |
| 312 (i.e., double precision sum of single or integer inputs) more | |
| 313 efficiently, avoiding a temporary conversion of the whole input | |
| 314 array to doubles. Further, `sum' can now accept an extra option | |
| 315 argument, using a compensated summation algorithm rather than a | |
| 316 straightforward sum, which significantly improves precision if lots | |
| 317 of cancellation occurs in the summation. | |
| 9717 | 318 |
| 10118 | 319 ** The built-in `bsxfun' function now uses optimized code for certain |
| 320 cases where built-in operator handles are passed in. Namely, the | |
| 321 optimizations concern the operators `plus', `minus', `times', | |
| 322 `ldivide', `rdivide', `power', `and', `or' (for logical arrays), | |
| 323 the relational operators `eq', `ne', `lt', `le', `gt', `ge', and the | |
| 324 functions `min' and `max'. Optimizations only apply when both | |
| 325 operands are of the same built-in class. Mixed real/complex and | |
| 326 single/double operations will first convert both operands to a | |
| 327 common type. | |
| 9745 | 328 |
| 10118 | 329 ** The `strfind' and `strrep' functions now have compiled |
| 330 implementations, facilitating significantly more efficient searching | |
| 331 and replacing in strings, especially with longer patterns. The code | |
| 332 of `strcat' has been vectorized and is now much more efficient when | |
| 333 many strings are concatenated. The `strcmpi' and `strncmpi' | |
| 334 functions are now built-in functions, providing better performance. | |
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335 |
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336 ** 'str2double' now has a compiled implementation and the API conforms |
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337 to Matlab. The additional Octave-specific features of returning a |
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338 boolean matrix indicating which elements were successfully converted |
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339 has been removed. |
| 10208 | 340 |
| 10453 | 341 ** Matlab-style ignoring input and output function arguments using |
| 11111 | 342 tilde (~) is now supported. Ignored output arguments may be |
| 343 detected from a function using the built-in function `isargout'. | |
| 344 For more details, consult the manual. | |
| 10886 | 345 |
| 10453 | 346 ** The list datatype, deprecated since the introduction of cells, has |
| 347 been removed. | |
| 10276 | 348 |
| 10453 | 349 ** The accumarray function has been optimized and is now significantly |
| 350 faster in certain important cases. | |
| 10054 | 351 |
| 10292 | 352 ** The behavior of isreal and isnumeric functions was changed to be more |
| 353 Matlab-compatible. | |
| 354 | |
| 10406 | 355 ** The integer math & conversion warnings (Octave:int-convert-nan, |
| 356 Octave:int-convert-non-int-val, Octave:int-convert-overflow, | |
| 11111 | 357 Octave:int-math-overflow) have been removed. |
| 10406 | 358 |
| 10453 | 359 ** rem and mod are now built-in functions. They also handle integer |
| 360 types efficiently using integer arithmetic. | |
| 10437 | 361 |
| 10536 | 362 ** Sparse indexing and indexed assignment has been mostly rewritten. |
| 363 Since Octave uses compressed column storage for sparse matrices, | |
| 364 major attention is devoted to operations manipulating whole columns. | |
| 365 Such operations are now significantly faster, as well as some other | |
| 366 important cases. | |
| 367 | |
| 368 Further, it is now possible to pre-allocate a sparse matrix and | |
| 369 subsequently fill it by assignments, provided they meet certain | |
| 370 conditions. For more information, consult the `spalloc' function, | |
| 371 which is no longer a mere dummy. Consequently, nzmax and nnz are no | |
| 11111 | 372 longer always equal in Octave. Octave may also produce a matrix |
| 373 with nnz < nzmax as a result of other operations, so you should | |
| 374 consistently use nnz unless you really want to use nzmax (i.e. the | |
| 375 space allocated for nonzero elements). | |
| 10536 | 376 |
| 377 Sparse concatenation is also affected, and concatenating sparse | |
| 378 matrices, especially larger collections, is now significantly more | |
| 11111 | 379 efficient. This applies to both the [] operator and the |
| 10536 | 380 cat/vertcat/horzcat functions. |
| 381 | |
| 11111 | 382 ** It is now possible to optionally employ the xGESDD LAPACK drivers |
| 383 for computing the singular value decomposition using svd(), instead | |
| 384 of the default xGESVD, using the configuration pseudo-variable | |
| 385 svd_driver. The xGESDD driver can be up to 6x times faster when | |
| 386 singular vectors are requested, but is reported to be somewhat less | |
| 10639 | 387 robust on highly ill-conditioned matrices. |
| 388 | |
| 389 ** Configuration pseudo-variables, such as page_screen_output or | |
| 390 confirm_recursive_rmdir (or the above mentioned svd_driver), now | |
| 391 accept a "local" option as second argument, requesting the change | |
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392 to be undone when the current function returns: |
| 10639 | 393 |
| 394 function [status, msg] = rm_rf (dir) | |
| 395 confirm_recursive_rmdir (false, "local"); | |
| 396 [status, msg] = rmdir (dir, "s"); | |
| 397 ... | |
| 398 endfunction | |
| 399 | |
| 400 Upon return, confirm_recursive_rmdir will be restored to the value | |
| 401 it had on entry to the function, even if there were subsequent | |
| 402 changes to the variable in function rm_rf or any of the functions | |
| 403 it calls. | |
| 404 | |
| 11111 | 405 ** pkg now accepts a -forge option for downloading and installing |
| 406 packages from Octave Forge automatically. For example, | |
| 10774 | 407 |
| 408 pkg install -forge general | |
| 409 | |
| 11111 | 410 will automatically download the latest release of the general |
| 411 package and attempt to install it. No automatic resolving of | |
| 412 dependencies is provided. Further, | |
| 10639 | 413 |
| 10774 | 414 pkg list -forge |
| 415 | |
| 416 can be used to list all available packages. | |
| 417 | |
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418 ** The internal data representation of structs has been completely |
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419 rewritten to make certain optimizations feasible. The field data |
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420 can now be shared between structs with equal keys but different |
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421 dimensions or values, making operations that preserve the fields |
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422 faster. Economized storage is now used for scalar structs (just |
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423 like most other scalars), making their usage more |
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424 memory-efficient. Certain array-like operations on structs |
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425 (concatenation, uniform cellfun, num2cell) have gained a |
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426 significant speed-up. Additionally, the octave_scalar_map class |
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427 now provides a simpler interface to work with scalar structs within |
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428 a C++ DLD function. |
| 10639 | 429 |
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430 ** Two new formats are available for displaying numbers: |
| 11111 | 431 |
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432 format short eng |
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433 format long eng |
| 11111 | 434 |
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435 Both display numbers in engineering notation, i.e., mantissa + |
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436 exponent where the exponent is a multiple of 3. |
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437 |
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438 ** The following functions are new in Octave 3.4: |
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439 accumdim erfcx nfields pqpnonneg uigetdir |
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440 bitpack fileread nth_element quadcc uigetfile |
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441 bitunpack fminbnd onCleanup randi uiputfile |
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442 blkmm fskipl pbaspect repelems uimenu |
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443 cbrt ifelse pie3 reset whitebg |
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444 curl ishermitian powerset rsf2csf |
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445 chop isindex ppder saveas |
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446 daspect luupdate ppint strread |
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447 divergence merge ppjumps textread |
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448 |
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449 ** Using the image function to view images with external programs such |
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450 as display, xv, and xloadimage is no longer supported. The |
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451 image_viewer function has also been removed. |
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452 |
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453 ** The behavior of struct assignments to non-struct values has been |
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454 changed. Previously, it was possible to overwrite an arbitrary |
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455 value: |
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456 |
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457 a = 1; |
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458 a.x = 2; |
| 10873 | 459 |
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460 This is no longer possible unless a is an empty matrix or cell |
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461 array. |
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462 |
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463 ** The dlmread function has been extended to allow specifying a custom |
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464 value for empty fields. |
| 10829 | 465 |
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466 ** The dlmread and dlmwrite functions have been modified to accept |
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467 file IDs (as returned by fopen) in addition to file names. |
| 11111 | 468 |
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469 ** Octave can now optimize away the interpreter overhead of an |
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470 anonymous function handle, if the function simply calls another |
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471 function or handle with some of its parameters bound to certain |
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472 values. Example: |
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473 |
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474 f = @(x) sum (x, 1); |
| 10966 | 475 |
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476 When f is called, the call is forwarded to @sum with the constant 1 |
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477 appended, and the anonymous function call does not occur on the |
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478 call stack. |
| 10829 | 479 |
| 12424 | 480 ** For compatibility with Matlab, mu2lin (x) is now equivalent to |
| 481 mu2lin (x, 0). | |
| 482 | |
| 483 ** The new function `history_control' may be used to control the way | |
| 484 command lines are added to the history list when Octave is using | |
| 485 readline for command-line editing. For example | |
| 486 | |
| 487 history_control ("ignoredups") | |
| 488 | |
| 489 tells Octave to avoid adding duplicate lines to the history list. | |
| 490 | |
| 491 ** Octave now uses the gnulib library for improved portability and to | |
| 492 avoid bugs in operating system functions. | |
| 493 | |
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494 ** Deprecated functions. |
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495 |
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496 The following functions were deprecated in Octave 3.0 and have been |
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497 removed from Octave 3.4. |
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498 |
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499 beta_cdf geometric_pdf pascal_pdf |
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500 beta_inv geometric_rnd pascal_rnd |
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501 beta_pdf hypergeometric_cdf poisson_cdf |
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502 beta_rnd hypergeometric_inv poisson_inv |
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503 binomial_cdf hypergeometric_pdf poisson_pdf |
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504 binomial_inv hypergeometric_rnd poisson_rnd |
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505 binomial_pdf intersection polyinteg |
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506 binomial_rnd is_bool setstr |
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507 chisquare_cdf is_complex struct_contains |
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508 chisquare_inv is_list struct_elements |
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509 chisquare_pdf is_matrix t_cdf |
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510 chisquare_rnd is_scalar t_inv |
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511 clearplot is_square t_pdf |
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512 clg is_stream t_rnd |
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513 com2str is_struct uniform_cdf |
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514 exponential_cdf is_symmetric uniform_inv |
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515 exponential_inv is_vector uniform_pdf |
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516 exponential_pdf isstr uniform_rnd |
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517 exponential_rnd lognormal_cdf weibcdf |
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518 f_cdf lognormal_inv weibinv |
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519 f_inv lognormal_pdf weibpdf |
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520 f_pdf lognormal_rnd weibrnd |
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521 f_rnd meshdom weibull_cdf |
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522 gamma_cdf normal_cdf weibull_inv |
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523 gamma_inv normal_inv weibull_pdf |
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524 gamma_pdf normal_pdf weibull_rnd |
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525 gamma_rnd normal_rnd wiener_rnd |
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526 geometric_cdf pascal_cdf |
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527 geometric_inv pascal_inv |
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528 |
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529 The following functions were deprecated in Octave 3.2 and will |
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530 be removed from Octave 3.6 (or whatever version is the second major |
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531 release after 3.2): |
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532 |
|
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533 create_set spcholinv splu |
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534 dmult spcumprod spmax |
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535 iscommand spcumsum spmin |
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536 israwcommand spdet spprod |
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537 lchol spdiag spqr |
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538 loadimage spfind spsum |
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539 mark_as_command sphcat spsumsq |
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540 mark_as_rawcommand spinv spvcat |
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541 spatan2 spkron str2mat |
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542 spchol splchol unmark_command |
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543 spchol2inv split unmark_rawcommand |
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544 |
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545 The following functions have been deprecated in Octave 3.4 and will |
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546 be removed from Octave 3.8 (or whatever version is the second major |
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547 release after 3.4): |
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548 |
|
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549 autocor cellidx gammai krylovb saveimage |
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550 autocov dispatch glpkmex perror strerror |
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551 betai fstat is_global replot values |
|
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552 |
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553 Summary of important user-visible changes for version 3.2: |
| 5913 | 554 --------------------------------------------------------- |
| 2452 | 555 |
| 8737 | 556 ** Compatibility with Matlab graphics has been improved. |
| 6329 | 557 |
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558 The hggroup object and associated listener callback functions have |
| 8737 | 559 been added allowing the inclusion of group objects. Data sources |
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560 have been added to these group objects such that |
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561 |
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562 x = 0:0.1:10; |
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563 y = sin (x); |
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564 plot (x, y, "ydatasource", "y"); |
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565 for i = 1 : 100 |
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566 pause(0.1) |
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567 y = sin (x + 0.1 * i); |
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568 refreshdata(); |
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569 endfor |
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570 |
| 8737 | 571 works as expected. This capability has be used to introduce |
|
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572 stem-series, bar-series, etc., objects for better Matlab |
| 8737 | 573 compatibility. |
| 574 | |
| 575 ** New graphics functions: | |
| 576 | |
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577 addlistener ezcontour gcbo refresh |
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578 addproperty ezcontourf ginput refreshdata |
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579 allchild ezmesh gtext specular |
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580 available_graphics_toolkits ezmeshc intwarning surfl |
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581 graphics_toolkit ezplot ishghandle trisurf |
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582 cla ezplot3 isocolors waitforbuttonpress |
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583 clabel ezpolar isonormals |
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584 comet ezsurf isosurface |
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585 dellistener findall linkprop |
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586 diffuse gcbf plotmatrix |
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587 |
| 8737 | 588 ** New experimental OpenGL/FLTK based plotting system. |
| 589 | |
| 590 An experimental plotting system based on OpenGL and the FLTK | |
|
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591 toolkit is now part of Octave. This graphics toolkit is disabled by |
| 8737 | 592 default. You can switch to using it with the command |
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593 |
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594 graphics_toolkit ("fltk") |
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595 |
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596 for all future figures or for a particular figure with the command |
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597 |
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598 graphics_toolkit (h, "fltk") |
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599 |
| 11139 | 600 where "h" is a valid figure handle. |
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601 |
| 8737 | 602 ** Functions providing direct access to gnuplot have been removed. |
| 603 | |
|
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604 The functions __gnuplot_plot__, __gnuplot_set__, __gnuplot_raw__, |
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605 __gnuplot_show__, __gnuplot_replot__, __gnuplot_splot__, |
| 8737 | 606 __gnuplot_save_data__ and __gnuplot_send_inline_data__ have been |
| 607 removed from Octave. These function were incompatible with the | |
| 608 high level graphics handle code. | |
| 6329 | 609 |
| 8885 | 610 ** The Control, Finance and Quaternion functions have been removed. |
| 611 | |
| 612 These functions are now available as separate packages from | |
| 613 | |
| 614 http://octave.sourceforge.net/packages.html | |
| 615 | |
| 616 and can be reinstalled using the Octave package manager (see | |
| 617 the pkg function). | |
| 618 | |
| 619 ** Specific sparse matrix functions removed. | |
| 620 | |
| 621 The following functions, which handled only sparse matrices have | |
| 622 been removed. Instead of calling these functions directly, you | |
| 623 should use the corresponding function without the "sp" prefix. | |
| 8737 | 624 |
| 8885 | 625 spatan2 spcumsum spkron spprod |
| 626 spchol spdet splchol spqr | |
| 627 spchol2inv spdiag splu spsum | |
| 628 spcholinv spfind spmax spsumsqk | |
| 629 spcumprod spinv spmin | |
| 630 | |
| 631 ** Improvements to the debugger. | |
| 632 | |
| 633 The interactive debugging features have been improved. Stopping | |
| 634 on statements with dbstop should work correctly now. Stepping | |
| 635 into and over functions, and stepping one statement at a time | |
| 636 (with dbstep) now works. Moving up and down the call stack with | |
| 637 dbup and dbdown now works. The dbstack function is now available | |
| 638 to print the current function call stack. The new dbquit function | |
| 639 is available to exit the debugging mode. | |
| 640 | |
| 641 ** Improved traceback error messages. | |
| 642 | |
| 643 Traceback error messages are much more concise and easier to | |
| 644 understand. They now display information about the function call | |
| 645 stack instead of the stack of all statements that were active at | |
| 646 the point of the error. | |
|
8014
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|
647 |
| 8737 | 648 ** Object Oriented Programming. |
|
8405
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|
649 |
| 8737 | 650 Octave now includes OOP features and the user can create their own |
| 651 class objects and overloaded functions and operators. For | |
| 652 example, all methods of a class called "myclass" will be found in | |
| 653 a directory "@myclass" on the users path. The class specific | |
| 654 versions of functions and operators take precedence over the | |
| 655 generic versions of these functions. | |
| 656 | |
| 657 New functions related to OOP include | |
| 7189 | 658 |
| 8737 | 659 class inferiorto isobject loadobj methods superiorto |
| 660 | |
| 661 See the Octave manual for more details. | |
| 7038 | 662 |
| 8747 | 663 ** Parsing of Command-style Functions. |
| 664 | |
| 665 Octave now parses command-style functions without needing to first | |
| 666 declare them with "mark_as_command". The rules for recognizing a | |
| 667 command-style function calls are | |
| 668 | |
| 669 * A command must appear as the first word in a statement, | |
| 670 followed by a space. | |
| 671 | |
| 672 * The first character after the space must not be '=' or '(' | |
| 673 | |
| 674 * The next token after the space must not look like a binary | |
| 675 operator. | |
| 676 | |
| 677 These rules should be mostly compatible with the way Matlab parses | |
| 678 command-style function calls and allow users to define commands in | |
| 679 .m files without having to mark them as commands. | |
| 680 | |
| 681 Note that previous versions of Octave allowed expressions like | |
| 682 | |
| 683 x = load -text foo.dat | |
| 684 | |
| 685 but an expression like this will now generate a parse error. In | |
| 686 order to assign the value returned by a function to a variable, | |
| 687 you must use the normal function call syntax: | |
| 688 | |
| 689 x = load ("-text", "foo.dat"); | |
| 690 | |
| 8737 | 691 ** Block comments. |
| 692 | |
| 8747 | 693 Commented code can be between matching "#{" and "#}" or "%{" and |
| 694 "%}" markers, even if the commented code spans several line. This | |
| 695 allows blocks code to be commented, without needing to comment | |
| 696 each line. For example, | |
| 5814 | 697 |
| 8747 | 698 function [s, t] = func (x, y) |
| 699 s = 2 * x; | |
| 700 #{ | |
| 701 s *= y; | |
| 702 t = y + x; | |
| 703 #} | |
|
7990
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David Bateman <dbateman@free.fr>
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|
704 endfunction |
| 5814 | 705 |
| 8747 | 706 the lines "s *= y;" and "t = y + x" will not be executed. |
| 8737 | 707 |
|
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|
708 ** If any subfunction in a file ends with "end" or "endfunction", then |
|
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|
709 they all must end that way. Previously, Octave accepted |
|
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|
710 |
|
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|
711 function main () |
|
5252f12537f8
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|
712 ... |
|
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|
713 # no endfunction here. |
|
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|
714 function sub () |
|
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|
715 ... |
|
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|
716 endfunction |
|
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|
717 |
|
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|
718 but this is no longer allowed. |
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|
719 |
| 8737 | 720 ** Special treatment in the parser of expressions like "a' * b". |
| 2452 | 721 |
| 8737 | 722 In these cases the transpose is no longer explicitly formed and |
| 723 BLAS libraries are called with the transpose flagged, | |
| 724 significantly improving performance for these kinds of | |
| 725 operations. | |
|
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|
726 |
| 8737 | 727 ** Single Precision data type. |
| 2452 | 728 |
| 8737 | 729 Octave now includes a single precision data type. Single |
| 730 precision variables can be created with the "single" command, or | |
|
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|
731 from functions like ones, eye, etc. For example, |
| 5995 | 732 |
| 8737 | 733 single (1) |
| 734 ones (2, 2, "single") | |
| 735 zeros (2, 2, "single") | |
| 736 eye (2, 2, "single") | |
| 737 Inf (2, 2, "single") | |
| 738 NaN (2, 2, "single") | |
| 739 NA (2, 2, "single") | |
| 7279 | 740 |
| 8737 | 741 all create single precision variables. For compatibility with |
| 742 Matlab, mixed double/single precision operators and functions | |
| 743 return single precision types. | |
| 744 | |
| 745 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:
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diff
changeset
|
746 representation of the double precision NA value has changed, and |
|
86dae6e5b83c
Initial update of NEWS for 3.2 release
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parents:
7279
diff
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|
747 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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diff
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|
748 visa-versa are warned that compatibility might not be assured. |
| 7279 | 749 |
| 8737 | 750 ** Improved array indexing. |
| 751 | |
| 752 The underlying code used for indexing of arrays has been | |
|
9034
52515efc50c0
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|
753 completely rewritten and indexing is now significantly faster. |
| 8737 | 754 |
| 8755 | 755 ** Improved memory management. |
| 756 | |
| 757 Octave will now attempt to share data in some cases where previously | |
| 758 a copy would be made, such as certain array slicing operations or | |
|
9031
1052a66078cf
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Rik <rdrider0-list@yahoo.com>
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|
759 conversions between cells, structs and cs-lists. This usually reduces |
| 8755 | 760 both time and memory consumption. |
| 9128 | 761 Also, Octave will now attempt to detect and optimize usage of a vector |
| 762 as a stack, when elements are being repeatedly inserted at/removed from | |
| 763 the end of the vector. | |
| 8755 | 764 |
| 8738 | 765 ** Improved performance for reduction operations. |
| 766 | |
| 8755 | 767 The performance of the sum, prod, sumsq, cumsum, cumprod, any, all, |
| 768 max and min functions has been significantly improved. | |
| 8738 | 769 |
| 9006 | 770 ** Sorting and searching. |
| 771 | |
| 772 The performance of sort has been improved, especially when sorting | |
| 10453 | 773 indices are requested. An efficient built-in issorted |
| 774 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
|
775 efficient algorithm, especially in the homogeneous case. The lookup |
| 10453 | 776 function is now a built-in function performing a binary search, |
| 777 optimized for long runs of close elements. Lookup also works with | |
| 778 cell arrays of strings. | |
| 9006 | 779 |
| 780 ** Range arithmetics | |
| 781 | |
| 10453 | 782 For some operations on ranges, Octave will attempt to keep the |
| 783 result as a range. These include negation, adding a scalar, | |
| 784 subtracting a scalar, and multiplying by a scalar. Ranges with zero | |
| 785 increment are allowed and can be constructed using the built-in | |
| 786 function `ones'. | |
| 9006 | 787 |
| 788 ** Various performance improvements. | |
| 789 | |
| 10453 | 790 Performance of a number of other built-in operations and functions |
| 791 was improved, including: | |
| 9006 | 792 |
| 793 * logical operations | |
| 794 * comparison operators | |
| 795 * element-wise power | |
| 796 * accumarray | |
| 797 * cellfun | |
| 798 * isnan | |
| 799 * isinf | |
| 800 * isfinite | |
| 801 * nchoosek | |
| 802 * repmat | |
| 803 * strcmp | |
| 804 | |
| 8737 | 805 ** 64-bit integer arithmetic. |
| 806 | |
| 807 Arithmetic with 64-bit integers (int64 and uint64 types) is fully | |
| 808 supported, with saturation semantics like the other integer types. | |
| 809 Performance of most integer arithmetic operations has been | |
| 810 improved by using integer arithmetic directly. Previously, Octave | |
| 811 performed integer math with saturation semantics by converting the | |
| 812 operands to double precision, performing the operation, and then | |
| 813 converting the result back to an integer value, truncating if | |
| 814 necessary. | |
| 815 | |
| 8885 | 816 ** Diagonal and permutation matrices. |
| 817 | |
| 818 The interpreter can now treat diagonal and permutation matrices as | |
| 819 special objects that store only the non-zero elements, rather than | |
| 820 general full matrices. Therefore, it is now possible to construct | |
| 821 and use these matrices in linear algebra without suffering a | |
| 822 performance penalty due to storing large numbers of zero elements. | |
| 823 | |
| 824 ** Improvements to fsolve. | |
| 825 | |
| 826 The fsolve function now accepts an option structure argument (see | |
| 827 also the optimset function). The INFO values returned from fsolve | |
| 828 have changed to be compatible with Matlab's fsolve function. | |
| 829 Additionally, fsolve is now able to solve overdetermined systems, | |
| 830 complex-differentiable complex systems, systems with a sparse | |
| 831 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
|
832 inputs. It can also be called recursively. |
| 8885 | 833 |
| 8737 | 834 ** Improvements to the norm function. |
| 835 | |
| 836 The norm function is now able to compute row or column norms of a | |
| 837 matrix in a single call, as well as general matrix p-norms. | |
| 838 | |
| 839 ** New functions for computing some eigenvalues or singular values. | |
| 840 | |
| 841 The eigs and svds functions have been included in Octave. These | |
| 842 functions require the ARPACK library (now distributed under a | |
| 843 GPL-compatible license). | |
| 844 | |
| 845 ** 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
|
846 |
| 8737 | 847 choldelete cholshift qrdelete qrshift |
| 848 cholinsert cholupdate qrinsert qrupdate | |
| 849 | |
| 850 ** New quadrature functions. | |
| 851 | |
| 852 dblquad quadgk quadv triplequad | |
| 853 | |
| 8885 | 854 ** New functions for reading and writing images. |
| 855 | |
| 856 The imwrite and imread functions have been included in Octave. | |
| 857 These functions require the GraphicsMagick library. The new | |
| 858 function imfinfo provides information about an image file (size, | |
| 859 type, colors, etc.) | |
| 860 | |
|
9215
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|
861 ** The input_event_hook function has been replaced by the pair of |
|
1500d0197484
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diff
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|
862 functions add_input_event_hook and remove_input_event_hook so that |
|
1500d0197484
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John W. Eaton <jwe@octave.org>
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|
863 more than one hook function may be installed at a time. |
|
1500d0197484
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|
864 |
| 8737 | 865 ** Other miscellaneous new functions. |
|
8370
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document more new features in the NEWS file
Jaroslav Hajek <highegg@gmail.com>
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diff
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|
866 |
|
8932
2d0f8692a82e
Add the 'histc' function
Soren Hauberg <hauberg@gmail.com>
parents:
8888
diff
changeset
|
867 addtodate hypot reallog |
|
2d0f8692a82e
Add the 'histc' function
Soren Hauberg <hauberg@gmail.com>
parents:
8888
diff
changeset
|
868 bicgstab idivide realpow |
| 9006 | 869 cellslices info realsqrt |
| 870 cgs interp1q rectint | |
| 871 command_line_path isdebugmode regexptranslate | |
| 872 contrast isfloat restoredefaultpath | |
| 873 convn isstrprop roundb | |
| 874 cummin log1p rundemos | |
| 875 cummax lsqnonneg runlength | |
| 876 datetick matlabroot saveobj | |
| 877 display namelengthmax spaugment | |
| 878 expm1 nargoutchk strchr | |
| 879 filemarker pathdef strvcat | |
| 880 fstat perl subspace | |
| 881 full prctile symvar | |
| 882 fzero quantile treelayout | |
| 883 genvarname re_read_readline_init_file validatestring | |
| 884 histc | |
|
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Jaroslav Hajek <highegg@gmail.com>
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diff
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|
885 |
| 8885 | 886 ** Changes to strcat. |
| 887 | |
| 888 The strcat function is now compatible with Matlab's strcat | |
| 889 function, which removes trailing whitespace when concatenating | |
| 890 character strings. For example | |
| 891 | |
| 892 strcat ('foo ', 'bar') | |
| 893 ==> 'foobar' | |
| 894 | |
| 895 The new function cstrcat provides the previous behavior of | |
| 896 Octave's strcat. | |
| 897 | |
| 898 ** Improvements to the help functions. | |
| 899 | |
|
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|
900 The help system has been mostly re-implemented in .m files to make |
| 8885 | 901 it easier to modify. Performance of the lookfor function has been |
| 902 greatly improved by caching the help text from all functions that | |
| 903 are distributed with Octave. The pkg function has been modified | |
| 904 to generate cache files for external packages when they are | |
| 905 installed. | |
| 906 | |
|
8888
0c7b0049c023
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|
907 ** Deprecated functions. |
|
0c7b0049c023
mark create_set as deprecated in 3.2, not 3.0
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|
908 |
|
0c7b0049c023
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|
909 The following functions were deprecated in Octave 3.0 and will be |
|
11112
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|
910 removed from Octave 3.4 (or whatever version is the second major |
|
8888
0c7b0049c023
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|
911 release after 3.0): |
|
0c7b0049c023
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|
912 |
|
11112
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|
913 beta_cdf geometric_pdf pascal_pdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
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|
914 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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|
915 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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|
916 beta_rnd hypergeometric_inv poisson_inv |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
917 binomial_cdf hypergeometric_pdf poisson_pdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
918 binomial_inv hypergeometric_rnd poisson_rnd |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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|
919 binomial_pdf intersection polyinteg |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
920 binomial_rnd is_bool setstr |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
921 chisquare_cdf is_complex struct_contains |
|
8ea4cf59c41b
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|
922 chisquare_inv is_list struct_elements |
|
8ea4cf59c41b
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|
923 chisquare_pdf is_matrix t_cdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
924 chisquare_rnd is_scalar t_inv |
|
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|
925 clearplot is_square t_pdf |
|
8ea4cf59c41b
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|
926 clg is_stream t_rnd |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
927 com2str is_struct uniform_cdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
928 exponential_cdf is_symmetric uniform_inv |
|
8ea4cf59c41b
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|
929 exponential_inv is_vector uniform_pdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
930 exponential_pdf isstr uniform_rnd |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
931 exponential_rnd lognormal_cdf weibcdf |
|
8ea4cf59c41b
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|
932 f_cdf lognormal_inv weibinv |
|
8ea4cf59c41b
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|
933 f_inv lognormal_pdf weibpdf |
|
8ea4cf59c41b
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|
934 f_pdf lognormal_rnd weibrnd |
|
8ea4cf59c41b
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|
935 f_rnd meshdom weibull_cdf |
|
8ea4cf59c41b
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|
936 gamma_cdf normal_cdf weibull_inv |
|
8ea4cf59c41b
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|
937 gamma_inv normal_inv weibull_pdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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938 gamma_pdf normal_pdf weibull_rnd |
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John W. Eaton <jwe@octave.org>
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939 gamma_rnd normal_rnd wiener_rnd |
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940 geometric_cdf pascal_cdf |
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941 geometric_inv pascal_inv |
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942 |
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943 The following functions are now deprecated in Octave 3.2 and will |
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944 be removed from Octave 3.6 (or whatever version is the second major |
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945 release after 3.2): |
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946 |
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947 create_set spcholinv spmax |
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948 dmult spcumprod spmin |
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949 iscommand spcumsum spprod |
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950 israwcommand spdet spqr |
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951 lchol spdiag spsum |
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952 loadimage spfind spsumsq |
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953 mark_as_command spinv str2mat |
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954 mark_as_rawcommand spkron unmark_command |
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955 spatan2 splchol unmark_rawcommand |
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956 spchol split |
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957 spchol2inv splu |
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958 |
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959 See NEWS.3 for old news. |