Mercurial > hg > octave-lyh
annotate NEWS @ 16062:cc5a7d1233f3 stable rc-3-6-4-2
bump version for 3.6.4-rc2
* configure.ac (AC_INIT): Version is now 3.6.4-rc2.
(OCTAVE_RELEASE_DATE): Now 2013-02-11.
(OCTAVE_COPYRIGHT): Now 2013.
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Mon, 11 Feb 2013 16:22:26 -0500 |
| parents | d27e638b1c3a |
| children | 12ccdce2c216 |
| 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 |
| 14188 | 4 ** The PCRE library is now required to build Octave. If a pre-compiled |
| 5 package does not exist for your system, you can find PCRE sources | |
| 6 at http://www.pcre.org | |
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7 |
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8 ** The ARPACK library is no longer distributed with Octave. |
| 14188 | 9 If you need the eigs or svds functions you must provide an |
| 10 external ARPACK through a package manager or by compiling it | |
| 11 yourself. If a pre-compiled package does not exist for your system, | |
| 12 you can find the current ARPACK sources at | |
| 13 http://forge.scilab.org/index.php/p/arpack-ng | |
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14 |
| 14082 | 15 ** Many of Octave's binary operators (.*, .^, +, -, ...) now perform |
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16 automatic broadcasting for array operations which allows you to use |
| 14082 | 17 operator notation instead of calling bsxfun or expanding arrays (and |
| 18 unnecessarily wasting memory) with repmat or similar idioms. For | |
| 19 example, to scale the columns of a matrix by the elements of a row | |
| 20 vector, you may now write | |
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21 |
| 14082 | 22 rv .* M |
| 23 | |
| 24 In this expression, the number of elements of rv must match the | |
| 25 number of columns of M. The following operators are affected: | |
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26 |
| 14082 | 27 plus + .+ |
| 28 minus - .- | |
| 29 times .* | |
| 30 rdivide ./ | |
| 31 ldivide .\ | |
| 32 power .^ .** | |
| 33 lt < | |
| 34 le <= | |
| 35 eq == | |
| 36 gt > | |
| 37 ge >= | |
| 38 ne != ~= | |
| 39 and & | |
| 40 or | | |
| 41 atan2 | |
| 42 hypot | |
| 43 max | |
| 44 min | |
| 45 mod | |
| 46 rem | |
| 47 xor | |
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48 |
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49 additionally, since the A op= B assignment operators are equivalent |
| 14082 | 50 to A = A op B, the following operators are also affected: |
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51 |
| 14082 | 52 += -= .+= .-= .*= ./= .\= .^= .**= &= |= |
| 53 | |
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54 See the "Broadcasting" section in the new "Vectorization and Faster |
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55 Code Execution" chapter of the manual for more details. |
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56 |
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57 ** Octave now features a profiler, thanks to the work of Daniel Kraft |
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58 under the Google Summer of Code mentorship program. The manual has |
| 13262 | 59 been updated to reflect this addition. The new user-visible |
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60 functions are profile, profshow, and profexplore. |
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61 |
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62 ** Overhaul of statistical distribution functions |
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63 |
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64 Functions now return "single" outputs for inputs of class "single". |
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65 |
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66 75% reduction in memory usage through use of logical indexing. |
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67 |
| 14188 | 68 Random sample functions now use the same syntax as rand and accept |
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69 a comma separated list of dimensions or a dimension vector. |
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70 |
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71 Functions have been made Matlab-compatible with regard to special |
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72 cases (probability on boundaries, probabilities for values outside |
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73 distribution, etc.). This may cause subtle changes to existing |
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74 scripts. |
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75 |
| 14188 | 76 negative binomial function has been extended to real, non-integer |
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77 inputs. The discrete_inv function now returns v(1) for 0 instead of |
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78 NaN. The nbincdf function has been recoded to use a closed form |
| 14188 | 79 solution with betainc. |
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80 |
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81 ** strread, textscan, and textread have been completely revamped. |
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82 |
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83 They now support nearly all Matlab functionality including: |
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84 |
| 14082 | 85 * Matlab-compatible whitespace and delimiter defaults |
| 86 | |
| 87 * Matlab-compatible options: 'whitespace', treatasempty', format | |
| 88 string repeat count, user-specified comment style, uneven-length | |
| 89 output arrays, %n and %u conversion specifiers (provisionally) | |
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90 |
| 14082 | 91 ** All .m string functions have been modified for better performance or |
| 92 greater Matlab compatibility. Performance gains of 15X-30X have | |
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93 been demonstrated. Operations on cell array of strings no longer pay |
| 14082 | 94 quite as high a penalty as those on 2-D character arrays. |
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95 |
| 14082 | 96 deblank: Now requires character or cellstr input. |
| 97 | |
| 98 strtrim: Now requires character or cellstr input. | |
| 99 No longer trims nulls ("\0") from string for Matlab | |
| 100 compatibility. | |
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101 |
| 14082 | 102 strmatch: Follows documentation precisely and ignores trailing spaces |
| 103 in pattern and in string. Note that this is documented | |
| 104 Matlab behavior but the implementation apparently does | |
| 105 not always follow it. | |
| 106 | |
| 107 substr: Now possible to specify a negative LEN option which | |
| 108 extracts to within LEN of the end of the string. | |
| 109 | |
| 110 strtok: Now accepts cellstr input. | |
| 111 | |
| 112 base2dec, bin2dec, hex2dec: | |
| 113 Now accept cellstr inputs. | |
| 114 | |
| 115 dec2base, dec2bin, dec2hex: | |
| 116 Now accept cellstr inputs. | |
| 117 | |
| 118 index, rindex: | |
| 119 Now accept 2-D character array input. | |
| 120 | |
| 121 strsplit: Now accepts 2-D character array input. | |
| 13262 | 122 |
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123 ** Geometry functions derived from Qhull (convhull, delaunay, voronoi) |
| 14082 | 124 have been revamped. The options passed to the underlying qhull |
| 125 command have been changed for better results or for Matlab | |
| 126 compatibility. | |
| 127 | |
| 128 convhull: Default options are "Qt" for 2D, 3D, 4D inputs | |
| 129 Default options are "Qt Qx" for 5D and higher | |
| 130 | |
| 131 delaunay: Default options are "Qt Qbb Qc Qz" for 2D and 3D inputs | |
| 132 Default options are "Qt Qbb Qc Qx" for 4D and higher | |
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133 |
| 14082 | 134 voronoi: No default arguments |
| 135 | |
| 136 ** Date/Time functions updated. Millisecond support with FFF format | |
| 137 string now supported. | |
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138 |
| 14082 | 139 datestr: Numerical formats 21, 22, 29 changed to match Matlab. |
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140 Now accepts cellstr input. |
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141 |
| 14082 | 142 ** The following warning IDs have been removed: |
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143 |
| 14082 | 144 Octave:associativity-change |
| 145 Octave:complex-cmp-ops | |
| 146 Octave:empty-list-elements | |
| 147 Octave:fortran-indexing | |
| 148 Octave:precedence-change | |
| 149 | |
| 150 ** The warning ID Octave:string-concat has been renamed to | |
| 151 Octave:mixed-string-concat. | |
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152 |
| 14082 | 153 ** Octave now includes the following Matlab-compatible preference |
| 154 functions: | |
| 13262 | 155 |
| 14082 | 156 addpref getpref ispref rmpref setpref |
| 13262 | 157 |
| 14082 | 158 ** The following Matlab-compatible handle graphics functions have been |
| 159 added: | |
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160 |
| 14082 | 161 guidata uipanel uitoolbar |
| 162 guihandles uipushtool uiwait | |
| 163 uicontextmenu uiresume waitfor | |
| 164 uicontrol uitoggletool | |
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165 |
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166 The uiXXX functions above are experimental. |
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167 |
| 14082 | 168 Except for uiwait and uiresume, the uiXXX functions are not |
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169 supported with the FLTK+OpenGL graphics toolkit. |
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170 |
| 14082 | 171 The gnuplot graphics toolkit does not support any of the uiXXX |
| 172 functions nor the waitfor function. | |
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173 |
| 14082 | 174 ** New keyword parfor (parallel for loop) is now recognized as a valid |
| 175 keyword. Implementation, however, is still mapped to an ordinary | |
| 176 for loop. | |
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177 |
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178 ** Other new functions added in 3.6.0: |
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179 |
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180 bicg nthargout usejava |
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181 is_dq_string narginchk waitbar |
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182 is_sq_string python zscore |
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183 is_function_handle register_graphics_toolkit |
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184 loaded_graphics_toolkits recycle |
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185 |
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186 ** Deprecated functions. |
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187 |
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188 The following functions were deprecated in Octave 3.2 and have been |
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189 removed from Octave 3.6. |
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190 |
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191 create_set spcholinv splu |
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192 dmult spcumprod spmax |
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193 iscommand spcumsum spmin |
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194 israwcommand spdet spprod |
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195 lchol spdiag spqr |
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196 loadimage spfind spsum |
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197 mark_as_command sphcat spsumsq |
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198 mark_as_rawcommand spinv spvcat |
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199 spatan2 spkron str2mat |
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200 spchol splchol unmark_command |
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201 spchol2inv split unmark_rawcommand |
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202 |
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203 The following functions have been deprecated in Octave 3.6 and will |
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204 be removed from Octave 3.10 (or whatever version is the second major |
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205 release after 3.6): |
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206 |
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207 cut is_duplicate_entry |
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208 cor polyderiv |
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209 corrcoef shell_cmd |
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210 __error_text__ studentize |
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211 error_text sylvester_matrix |
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212 |
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213 ** The following functions have been modified for Matlab compatibility: |
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214 |
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215 randperm |
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216 |
| 13251 | 217 Summary of important user-visible changes for version 3.4.3: |
| 218 ----------------------------------------------------------- | |
| 219 | |
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220 ** Octave 3.4.3 is a bug fixing release. |
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221 |
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222 Summary of important user-visible changes for version 3.4.2: |
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223 ----------------------------------------------------------- |
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224 |
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225 ** Octave 3.4.2 fixes some minor installation problems that affected |
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226 version 3.4.1. |
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227 |
| 12709 | 228 Summary of important user-visible changes for version 3.4.1: |
| 229 ----------------------------------------------------------- | |
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230 |
| 12709 | 231 ** Octave 3.4.1 is primarily a bug fixing release. |
| 232 | |
| 233 ** IMPORTANT note about binary incompatibility in this release: | |
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234 |
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235 Binary compatibility for all 3.4.x releases was originally planned, |
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236 but this is impossible for the 3.4.1 release due to a bug in the way |
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237 shared libraries were built in Octave 3.4.0. Because of this bug, |
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238 .oct files built for Octave 3.4.0 must be recompiled before they |
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239 will work with Octave 3.4.1. |
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240 |
| 12709 | 241 Given that there would be binary incompatibilities with shared |
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242 libraries going from Octave 3.4.0 to 3.4.1, the following |
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243 incompatible changes were also made in this release: |
| 12709 | 244 |
| 245 * The Perl Compatible Regular Expression (PCRE) library is now | |
| 246 required to build Octave. | |
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247 |
| 12712 | 248 * Octave's libraries and .oct files are now installed in |
| 249 subdirectories of $libdir instead of $libexecdir. | |
| 250 | |
| 12709 | 251 Any future Octave 3.4.x release versions should remain binary |
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252 compatible with Octave 3.4.1 as proper library versioning is now |
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253 being used as recommended by the libtool manual. |
| 12709 | 254 |
| 255 ** The following functions have been deprecated in Octave 3.4.1 and will | |
| 256 be removed from Octave 3.8 (or whatever version is the second major | |
| 257 release after 3.4): | |
| 258 | |
| 259 cquad is_duplicate_entry perror strerror | |
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260 |
| 12709 | 261 ** The following functions are new in 3.4.1: |
| 262 | |
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263 colstyle gmres iscolumn isrow mgorth nproc rectangle |
| 12709 | 264 |
| 265 ** The get_forge_pkg function is now private. | |
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266 |
| 12709 | 267 ** The rectangle_lw, rectangle_sw, triangle_lw, and triangle_sw |
| 268 functions are now private. | |
| 269 | |
| 270 ** The logistic_regression_derivatives and logistic_regression_likelihood | |
| 271 functions are now private. | |
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272 |
| 12739 | 273 ** ChangeLog files in the Octave sources are no longer maintained |
| 274 by hand. Instead, there is a single ChangeLog file generated from | |
| 275 the Mercurial version control commit messages. Older ChangeLog | |
| 276 information can be found in the etc/OLD-ChangeLogs directory in the | |
| 277 source distribution. | |
| 278 | |
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279 Summary of important user-visible changes for version 3.4: |
| 9352 | 280 --------------------------------------------------------- |
| 281 | |
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282 ** BLAS and LAPACK libraries are now required to build Octave. The |
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283 subset of the reference BLAS and LAPACK libraries has been removed |
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284 from the Octave sources. |
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285 |
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286 ** The ARPACK library is now distributed with Octave so it no longer |
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287 needs to be available as an external dependency when building |
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288 Octave. |
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289 |
| 10118 | 290 ** The `lookup' function was extended to be more useful for |
| 291 general-purpose binary searching. Using this improvement, the | |
| 292 ismember function was rewritten for significantly better | |
| 293 performance. | |
| 9352 | 294 |
| 295 ** Real, integer and logical matrices, when used in indexing, will now | |
| 296 cache the internal index_vector value (zero-based indices) when | |
| 297 successfully used as indices, eliminating the conversion penalty for | |
| 10118 | 298 subsequent indexing by the same matrix. In particular, this means it |
| 299 is no longer needed to avoid repeated indexing by logical arrays | |
| 300 using find for performance reasons. | |
| 9888 | 301 |
| 10118 | 302 ** Logical matrices are now treated more efficiently when used as |
| 303 indices. Octave will keep the index as a logical mask unless the | |
| 304 ratio of true elements is small enough, using a specialized | |
| 305 code. Previously, all logical matrices were always first converted | |
| 306 to index vectors. This results in savings in both memory and | |
| 307 computing time. | |
| 9480 | 308 |
| 10118 | 309 ** The `sub2ind' and `ind2sub' functions were reimplemented as compiled |
| 310 functions for better performance. These functions are now faster, | |
| 311 can deliver more economized results for ranges, and can reuse the | |
| 312 index cache mechanism described in previous paragraph. | |
| 313 | |
| 314 ** The built-in function equivalents to associative operators (`plus', | |
| 315 `times', `mtimes', `and', and `or') have been extended to accept | |
| 316 multiple arguments. This is especially useful for summing | |
| 317 (multiplying, etc.) lists of objects (of possibly distinct types): | |
| 9408 | 318 |
| 9449 | 319 matrix_sum = plus (matrix_list{:}); |
| 320 | |
| 10118 | 321 ** An FTP object type based on libcurl has been implemented. These |
| 322 objects allow ftp connections, downloads and uploads to be | |
| 323 managed. For example, | |
| 9880 | 324 |
| 10118 | 325 fp = ftp ("ftp.octave.org); |
| 326 cd (fp, "gnu/octave"); | |
| 327 mget (fp, "octave-3.2.3.tar.bz2"); | |
| 328 close (fp); | |
| 9880 | 329 |
| 10118 | 330 ** The default behavior of `assert (observed, expected)' has been |
| 331 relaxed to employ less strict checking that does not require the | |
| 332 internals of the values to match. This avoids previously valid | |
| 333 tests from breaking due to new internal classes introduced in future | |
| 334 Octave versions. | |
| 9449 | 335 |
| 336 For instance, all of these assertions were true in Octave 3.0.x | |
| 337 but false in 3.2.x due to new optimizations and improvements: | |
| 338 | |
| 339 assert (2*linspace (1, 5, 5), 2*(1:5)) | |
| 340 assert (zeros (0, 0), []) | |
| 341 assert (2*ones (1, 5), (2) (ones (1,5))) | |
| 9462 | 342 |
| 10118 | 343 ** The behavior of library functions `ismatrix', `issquare', and |
| 344 `issymmetric' has been changed for better consistency. | |
| 9873 | 345 |
| 10292 | 346 * The `ismatrix' function now returns true for all numeric, |
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347 logical and character 2-D or N-D matrices. Previously, `ismatrix' |
| 10292 | 348 returned false if the first or second dimension was zero. |
| 349 Hence, `ismatrix ([])' was false, | |
| 350 while `ismatrix (zeros (1,2,0))' was true. | |
| 9873 | 351 |
| 10118 | 352 * The `issquare' function now returns a logical scalar, and is |
| 353 equivalent to the expression | |
| 354 | |
| 355 ismatrix (x) && ndims (x) == 2 && rows (x) == columns (x) | |
| 356 | |
| 357 The dimension is no longer returned. As a result, `issquare ([])' | |
| 358 now yields true. | |
| 9873 | 359 |
| 10118 | 360 * The `issymmetric' function now checks for symmetry instead of |
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361 Hermitianness. For the latter, ishermitian was created. Also, |
| 10118 | 362 logical scalar is returned rather than the dimension, so |
| 363 `issymmetric ([])' is now true. | |
| 9873 | 364 |
| 10118 | 365 ** Function handles are now aware of overloaded functions. If a |
| 366 function is overloaded, the handle determines at the time of its | |
| 367 reference which function to call. A non-overloaded version does not | |
| 368 need to exist. | |
| 9873 | 369 |
| 10118 | 370 ** Overloading functions for built-in classes (double, int8, cell, |
| 371 etc.) is now compatible with Matlab. | |
| 9408 | 372 |
| 10323 | 373 ** Function handles can now be compared with the == and != operators, |
| 374 as well as the `isequal' function. | |
| 375 | |
| 10118 | 376 ** Performance of concatenation (using []) and the functions `cat', |
| 377 `horzcat', and `vertcat' has been improved for multidimensional | |
| 378 arrays. | |
| 10117 | 379 |
| 9547 | 380 ** The operation-assignment operators +=, -=, *= and /= now behave more |
| 10118 | 381 efficiently in certain cases. For instance, if M is a matrix and S a |
| 382 scalar, then the statement | |
| 9547 | 383 |
| 10118 | 384 M += S; |
| 9547 | 385 |
| 10118 | 386 will operate on M's data in-place if it is not shared by another |
| 387 variable, usually increasing both time and memory efficiency. | |
| 9547 | 388 |
| 9558 | 389 Only selected common combinations are affected, namely: |
| 9547 | 390 |
| 391 matrix += matrix | |
| 392 matrix -= matrix | |
| 9558 | 393 matrix .*= matrix |
| 394 matrix ./= matrix | |
| 395 | |
| 9547 | 396 matrix += scalar |
| 397 matrix -= scalar | |
| 398 matrix *= scalar | |
| 399 matrix /= scalar | |
| 9558 | 400 |
| 9552 | 401 logical matrix |= logical matrix |
| 402 logical matrix &= logical matrix | |
| 9547 | 403 |
| 10118 | 404 where matrix and scalar belong to the same class. The left-hand |
| 405 side must be a simple variable reference. | |
| 9888 | 406 |
| 10118 | 407 Moreover, when unary operators occur in expressions, Octave will |
| 408 also try to do the operation in-place if it's argument is a | |
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409 temporary expression. |
| 9589 | 410 |
| 10118 | 411 ** The effect of comparison operators (<, >, <=, and >=) applied to |
| 412 complex numbers has changed to be consistent with the strict | |
| 413 ordering defined by the `max', `min', and `sort' functions. More | |
| 414 specifically, complex numbers are compared by lexicographical | |
| 415 comparison of the pairs `[abs(z), arg(z)]'. Previously, only real | |
| 14188 | 416 parts were compared; this can be trivially achieved by converting |
| 417 the operands to real values with the `real' function. | |
| 9547 | 418 |
| 10118 | 419 ** The automatic simplification of complex computation results has |
| 420 changed. Octave will now simplify any complex number with a zero | |
| 421 imaginary part or any complex matrix with all elements having zero | |
| 422 imaginary part to a real value. Previously, this was done only for | |
| 423 positive zeros. Note that the behavior of the complex function is | |
| 424 unchanged and it still produces a complex value even if the | |
| 425 imaginary part is zero. | |
| 9826 | 426 |
| 10118 | 427 ** As a side effect of code refactoring in liboctave, the binary |
| 428 logical operations are now more easily amenable to compiler | |
| 429 optimizations and are thus significantly faster. | |
| 9595 | 430 |
| 10118 | 431 ** Octave now allows user-defined `subsasgn' methods to optimize out |
| 432 redundant copies. For more information, see the manual. | |
| 9595 | 433 |
| 10453 | 434 ** More efficient matrix division handling. Octave is now able to |
| 10118 | 435 handle the expressions |
| 9664 | 436 |
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437 M' \ V |
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438 M.' \ V |
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439 V / M |
| 9664 | 440 |
| 10118 | 441 (M is a matrix and V is a vector) more efficiently in certain cases. |
| 442 In particular, if M is triangular, all three expressions will be | |
| 443 handled by a single call to xTRTRS (from LAPACK), with appropriate | |
| 10453 | 444 flags. Previously, all three expressions required a physical |
| 10118 | 445 transpose of M. |
| 9664 | 446 |
| 10118 | 447 ** More efficient handling of certain mixed real-complex matrix |
| 448 operations. For instance, if RM is a real matrix and CM a complex | |
| 449 matrix, | |
| 9664 | 450 |
| 10118 | 451 RM * CM |
| 9664 | 452 |
| 453 can now be evaluated either as | |
| 454 | |
| 455 complex (RM * real (CM), RM * imag (CM)) | |
| 456 | |
| 457 or as | |
| 458 | |
| 459 complex (RM) * CM, | |
| 460 | |
| 10453 | 461 depending on the dimensions. The first form requires more |
| 462 temporaries and copying, but halves the FLOP count, which normally | |
| 463 brings better performance if RM has enough rows. Previously, the | |
| 464 second form was always used. | |
| 9664 | 465 |
| 11111 | 466 Matrix division is similarly affected. |
| 9664 | 467 |
| 10118 | 468 ** More efficient handling of triangular matrix factors returned from |
| 469 factorizations. The functions for computing QR, LU and Cholesky | |
| 470 factorizations will now automatically return the triangular matrix | |
| 471 factors with proper internal matrix_type set, so that it won't need | |
| 472 to be computed when the matrix is used for division. | |
| 9717 | 473 |
| 10118 | 474 ** The built-in `sum' function now handles the non-native summation |
| 475 (i.e., double precision sum of single or integer inputs) more | |
| 476 efficiently, avoiding a temporary conversion of the whole input | |
| 477 array to doubles. Further, `sum' can now accept an extra option | |
| 478 argument, using a compensated summation algorithm rather than a | |
| 479 straightforward sum, which significantly improves precision if lots | |
| 480 of cancellation occurs in the summation. | |
| 9717 | 481 |
| 10118 | 482 ** The built-in `bsxfun' function now uses optimized code for certain |
| 483 cases where built-in operator handles are passed in. Namely, the | |
| 484 optimizations concern the operators `plus', `minus', `times', | |
| 485 `ldivide', `rdivide', `power', `and', `or' (for logical arrays), | |
| 486 the relational operators `eq', `ne', `lt', `le', `gt', `ge', and the | |
| 487 functions `min' and `max'. Optimizations only apply when both | |
| 488 operands are of the same built-in class. Mixed real/complex and | |
| 489 single/double operations will first convert both operands to a | |
| 490 common type. | |
| 9745 | 491 |
| 10118 | 492 ** The `strfind' and `strrep' functions now have compiled |
| 493 implementations, facilitating significantly more efficient searching | |
| 494 and replacing in strings, especially with longer patterns. The code | |
| 495 of `strcat' has been vectorized and is now much more efficient when | |
| 496 many strings are concatenated. The `strcmpi' and `strncmpi' | |
| 497 functions are now built-in functions, providing better performance. | |
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498 |
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499 ** 'str2double' now has a compiled implementation and the API conforms |
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500 to Matlab. The additional Octave-specific features of returning a |
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501 boolean matrix indicating which elements were successfully converted |
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502 has been removed. |
| 10208 | 503 |
| 10453 | 504 ** Matlab-style ignoring input and output function arguments using |
| 11111 | 505 tilde (~) is now supported. Ignored output arguments may be |
| 506 detected from a function using the built-in function `isargout'. | |
| 507 For more details, consult the manual. | |
| 10886 | 508 |
| 10453 | 509 ** The list datatype, deprecated since the introduction of cells, has |
| 510 been removed. | |
| 10276 | 511 |
| 10453 | 512 ** The accumarray function has been optimized and is now significantly |
| 513 faster in certain important cases. | |
| 10054 | 514 |
| 10292 | 515 ** The behavior of isreal and isnumeric functions was changed to be more |
| 516 Matlab-compatible. | |
| 517 | |
| 10406 | 518 ** The integer math & conversion warnings (Octave:int-convert-nan, |
| 519 Octave:int-convert-non-int-val, Octave:int-convert-overflow, | |
| 11111 | 520 Octave:int-math-overflow) have been removed. |
| 10406 | 521 |
| 10453 | 522 ** rem and mod are now built-in functions. They also handle integer |
| 523 types efficiently using integer arithmetic. | |
| 10437 | 524 |
| 10536 | 525 ** Sparse indexing and indexed assignment has been mostly rewritten. |
| 526 Since Octave uses compressed column storage for sparse matrices, | |
| 527 major attention is devoted to operations manipulating whole columns. | |
| 528 Such operations are now significantly faster, as well as some other | |
| 529 important cases. | |
| 530 | |
| 531 Further, it is now possible to pre-allocate a sparse matrix and | |
| 532 subsequently fill it by assignments, provided they meet certain | |
| 533 conditions. For more information, consult the `spalloc' function, | |
| 534 which is no longer a mere dummy. Consequently, nzmax and nnz are no | |
| 11111 | 535 longer always equal in Octave. Octave may also produce a matrix |
| 536 with nnz < nzmax as a result of other operations, so you should | |
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537 consistently use nnz unless you really want to use nzmax (i.e., the |
| 11111 | 538 space allocated for nonzero elements). |
| 10536 | 539 |
| 540 Sparse concatenation is also affected, and concatenating sparse | |
| 541 matrices, especially larger collections, is now significantly more | |
| 11111 | 542 efficient. This applies to both the [] operator and the |
| 10536 | 543 cat/vertcat/horzcat functions. |
| 544 | |
| 11111 | 545 ** It is now possible to optionally employ the xGESDD LAPACK drivers |
| 14188 | 546 for computing the singular value decomposition using svd, instead |
| 11111 | 547 of the default xGESVD, using the configuration pseudo-variable |
| 548 svd_driver. The xGESDD driver can be up to 6x times faster when | |
| 549 singular vectors are requested, but is reported to be somewhat less | |
| 10639 | 550 robust on highly ill-conditioned matrices. |
| 551 | |
| 552 ** Configuration pseudo-variables, such as page_screen_output or | |
| 553 confirm_recursive_rmdir (or the above mentioned svd_driver), now | |
| 554 accept a "local" option as second argument, requesting the change | |
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555 to be undone when the current function returns: |
| 10639 | 556 |
| 557 function [status, msg] = rm_rf (dir) | |
| 558 confirm_recursive_rmdir (false, "local"); | |
| 559 [status, msg] = rmdir (dir, "s"); | |
| 560 ... | |
| 561 endfunction | |
| 562 | |
| 563 Upon return, confirm_recursive_rmdir will be restored to the value | |
| 564 it had on entry to the function, even if there were subsequent | |
| 565 changes to the variable in function rm_rf or any of the functions | |
| 566 it calls. | |
| 567 | |
| 11111 | 568 ** pkg now accepts a -forge option for downloading and installing |
| 569 packages from Octave Forge automatically. For example, | |
| 10774 | 570 |
| 571 pkg install -forge general | |
| 572 | |
| 11111 | 573 will automatically download the latest release of the general |
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574 package and attempt to install it. No automatic resolving of |
| 11111 | 575 dependencies is provided. Further, |
| 10639 | 576 |
| 10774 | 577 pkg list -forge |
| 578 | |
| 579 can be used to list all available packages. | |
| 580 | |
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581 ** The internal data representation of structs has been completely |
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582 rewritten to make certain optimizations feasible. The field data |
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583 can now be shared between structs with equal keys but different |
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584 dimensions or values, making operations that preserve the fields |
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585 faster. Economized storage is now used for scalar structs (just |
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586 like most other scalars), making their usage more |
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587 memory-efficient. Certain array-like operations on structs |
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588 (concatenation, uniform cellfun, num2cell) have gained a |
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589 significant speed-up. Additionally, the octave_scalar_map class |
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590 now provides a simpler interface to work with scalar structs within |
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591 a C++ DLD function. |
| 10639 | 592 |
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593 ** Two new formats are available for displaying numbers: |
| 11111 | 594 |
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595 format short eng |
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596 format long eng |
| 11111 | 597 |
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598 Both display numbers in engineering notation, i.e., mantissa + |
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599 exponent where the exponent is a multiple of 3. |
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600 |
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601 ** The following functions are new in Octave 3.4: |
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602 accumdim erfcx nfields pqpnonneg uigetdir |
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603 bitpack fileread nth_element quadcc uigetfile |
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604 bitunpack fminbnd onCleanup randi uiputfile |
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605 blkmm fskipl pbaspect repelems uimenu |
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606 cbrt ifelse pie3 reset whitebg |
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607 curl ishermitian powerset rsf2csf |
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608 chop isindex ppder saveas |
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609 daspect luupdate ppint strread |
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610 divergence merge ppjumps textread |
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611 |
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612 ** Using the image function to view images with external programs such |
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613 as display, xv, and xloadimage is no longer supported. The |
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614 image_viewer function has also been removed. |
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615 |
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616 ** The behavior of struct assignments to non-struct values has been |
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617 changed. Previously, it was possible to overwrite an arbitrary |
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618 value: |
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619 |
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620 a = 1; |
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621 a.x = 2; |
| 10873 | 622 |
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623 This is no longer possible unless a is an empty matrix or cell |
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624 array. |
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625 |
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626 ** The dlmread function has been extended to allow specifying a custom |
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627 value for empty fields. |
| 10829 | 628 |
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629 ** The dlmread and dlmwrite functions have been modified to accept |
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630 file IDs (as returned by fopen) in addition to file names. |
| 11111 | 631 |
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632 ** Octave can now optimize away the interpreter overhead of an |
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633 anonymous function handle, if the function simply calls another |
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634 function or handle with some of its parameters bound to certain |
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635 values. Example: |
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636 |
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637 f = @(x) sum (x, 1); |
| 10966 | 638 |
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639 When f is called, the call is forwarded to @sum with the constant 1 |
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640 appended, and the anonymous function call does not occur on the |
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641 call stack. |
| 10829 | 642 |
| 12424 | 643 ** For compatibility with Matlab, mu2lin (x) is now equivalent to |
| 644 mu2lin (x, 0). | |
| 645 | |
| 646 ** The new function `history_control' may be used to control the way | |
| 647 command lines are added to the history list when Octave is using | |
| 648 readline for command-line editing. For example | |
| 649 | |
| 650 history_control ("ignoredups") | |
| 651 | |
| 652 tells Octave to avoid adding duplicate lines to the history list. | |
| 653 | |
| 654 ** Octave now uses the gnulib library for improved portability and to | |
| 655 avoid bugs in operating system functions. | |
| 656 | |
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657 ** Deprecated functions. |
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658 |
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659 The following functions were deprecated in Octave 3.0 and have been |
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660 removed from Octave 3.4. |
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661 |
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662 beta_cdf geometric_pdf pascal_pdf |
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663 beta_inv geometric_rnd pascal_rnd |
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664 beta_pdf hypergeometric_cdf poisson_cdf |
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665 beta_rnd hypergeometric_inv poisson_inv |
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666 binomial_cdf hypergeometric_pdf poisson_pdf |
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667 binomial_inv hypergeometric_rnd poisson_rnd |
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668 binomial_pdf intersection polyinteg |
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669 binomial_rnd is_bool setstr |
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670 chisquare_cdf is_complex struct_contains |
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671 chisquare_inv is_list struct_elements |
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672 chisquare_pdf is_matrix t_cdf |
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673 chisquare_rnd is_scalar t_inv |
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674 clearplot is_square t_pdf |
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675 clg is_stream t_rnd |
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676 com2str is_struct uniform_cdf |
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677 exponential_cdf is_symmetric uniform_inv |
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678 exponential_inv is_vector uniform_pdf |
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679 exponential_pdf isstr uniform_rnd |
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680 exponential_rnd lognormal_cdf weibcdf |
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681 f_cdf lognormal_inv weibinv |
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682 f_inv lognormal_pdf weibpdf |
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683 f_pdf lognormal_rnd weibrnd |
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684 f_rnd meshdom weibull_cdf |
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685 gamma_cdf normal_cdf weibull_inv |
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686 gamma_inv normal_inv weibull_pdf |
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687 gamma_pdf normal_pdf weibull_rnd |
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688 gamma_rnd normal_rnd wiener_rnd |
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689 geometric_cdf pascal_cdf |
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690 geometric_inv pascal_inv |
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691 |
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changeset
|
692 The following functions were deprecated in Octave 3.2 and will |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
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|
693 be removed from Octave 3.6 (or whatever version is the second major |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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11111
diff
changeset
|
694 release after 3.2): |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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11111
diff
changeset
|
695 |
|
11390
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
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11330
diff
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|
696 create_set spcholinv splu |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
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diff
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|
697 dmult spcumprod spmax |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
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diff
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|
698 iscommand spcumsum spmin |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
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diff
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|
699 israwcommand spdet spprod |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
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diff
changeset
|
700 lchol spdiag spqr |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
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parents:
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diff
changeset
|
701 loadimage spfind spsum |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
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parents:
11330
diff
changeset
|
702 mark_as_command sphcat spsumsq |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
703 mark_as_rawcommand spinv spvcat |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
704 spatan2 spkron str2mat |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
705 spchol splchol unmark_command |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
706 spchol2inv split unmark_rawcommand |
|
11112
8ea4cf59c41b
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John W. Eaton <jwe@octave.org>
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diff
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|
707 |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
708 The following functions have been deprecated in Octave 3.4 and will |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
709 be removed from Octave 3.8 (or whatever version is the second major |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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parents:
11111
diff
changeset
|
710 release after 3.4): |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
711 |
|
12723
6ed1e0be181e
doc: Update NEWS with new functions for release 3.4.1
Rik <octave@nomad.inbox5.com>
parents:
12713
diff
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|
712 autocor cellidx gammai krylovb saveimage |
|
6ed1e0be181e
doc: Update NEWS with new functions for release 3.4.1
Rik <octave@nomad.inbox5.com>
parents:
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diff
changeset
|
713 autocov dispatch glpkmex perror strerror |
|
6ed1e0be181e
doc: Update NEWS with new functions for release 3.4.1
Rik <octave@nomad.inbox5.com>
parents:
12713
diff
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|
714 betai fstat is_global replot values |
|
11112
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
715 |
|
7990
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
716 Summary of important user-visible changes for version 3.2: |
| 5913 | 717 --------------------------------------------------------- |
| 2452 | 718 |
| 8737 | 719 ** Compatibility with Matlab graphics has been improved. |
| 6329 | 720 |
|
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Add data sources and line series
David Bateman <dbateman@free.fr>
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diff
changeset
|
721 The hggroup object and associated listener callback functions have |
| 8737 | 722 been added allowing the inclusion of group objects. Data sources |
|
8070
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
723 have been added to these group objects such that |
|
3b53b25e2550
Add data sources and line series
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parents:
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diff
changeset
|
724 |
|
3b53b25e2550
Add data sources and line series
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diff
changeset
|
725 x = 0:0.1:10; |
|
3b53b25e2550
Add data sources and line series
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diff
changeset
|
726 y = sin (x); |
|
3b53b25e2550
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diff
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|
727 plot (x, y, "ydatasource", "y"); |
|
3b53b25e2550
Add data sources and line series
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diff
changeset
|
728 for i = 1 : 100 |
|
3b53b25e2550
Add data sources and line series
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diff
changeset
|
729 pause(0.1) |
|
3b53b25e2550
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diff
changeset
|
730 y = sin (x + 0.1 * i); |
| 14188 | 731 refreshdata (); |
|
8070
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Add data sources and line series
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|
732 endfor |
|
3b53b25e2550
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diff
changeset
|
733 |
| 8737 | 734 works as expected. This capability has be used to introduce |
|
9031
1052a66078cf
Documentation cleanup of top-level Octave directory (READMEs, INSTALL)
Rik <rdrider0-list@yahoo.com>
parents:
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diff
changeset
|
735 stem-series, bar-series, etc., objects for better Matlab |
| 8737 | 736 compatibility. |
| 737 | |
| 738 ** New graphics functions: | |
| 739 | |
|
11576
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
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changeset
|
740 addlistener ezcontour gcbo refresh |
|
8ac9687dbe9f
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
741 addproperty ezcontourf ginput refreshdata |
|
8ac9687dbe9f
rename backend to graphics_toolkit
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parents:
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diff
changeset
|
742 allchild ezmesh gtext specular |
|
8ac9687dbe9f
rename backend to graphics_toolkit
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parents:
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diff
changeset
|
743 available_graphics_toolkits ezmeshc intwarning surfl |
|
8ac9687dbe9f
rename backend to graphics_toolkit
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parents:
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changeset
|
744 graphics_toolkit ezplot ishghandle trisurf |
|
8ac9687dbe9f
rename backend to graphics_toolkit
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parents:
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diff
changeset
|
745 cla ezplot3 isocolors waitforbuttonpress |
|
8ac9687dbe9f
rename backend to graphics_toolkit
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parents:
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diff
changeset
|
746 clabel ezpolar isonormals |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
747 comet ezsurf isosurface |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
748 dellistener findall linkprop |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
749 diffuse gcbf plotmatrix |
|
8070
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
750 |
| 8737 | 751 ** New experimental OpenGL/FLTK based plotting system. |
| 752 | |
| 753 An experimental plotting system based on OpenGL and the FLTK | |
|
11576
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
754 toolkit is now part of Octave. This graphics toolkit is disabled by |
| 8737 | 755 default. You can switch to using it with the command |
|
8070
3b53b25e2550
Add data sources and line series
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parents:
8014
diff
changeset
|
756 |
|
11576
8ac9687dbe9f
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parents:
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diff
changeset
|
757 graphics_toolkit ("fltk") |
|
8070
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Add data sources and line series
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diff
changeset
|
758 |
|
3b53b25e2550
Add data sources and line series
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parents:
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diff
changeset
|
759 for all future figures or for a particular figure with the command |
|
3b53b25e2550
Add data sources and line series
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diff
changeset
|
760 |
|
11576
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
761 graphics_toolkit (h, "fltk") |
|
8070
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Add data sources and line series
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diff
changeset
|
762 |
| 11139 | 763 where "h" is a valid figure handle. |
|
8070
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
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diff
changeset
|
764 |
| 8737 | 765 ** Functions providing direct access to gnuplot have been removed. |
| 766 | |
|
7990
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
767 The functions __gnuplot_plot__, __gnuplot_set__, __gnuplot_raw__, |
|
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
768 __gnuplot_show__, __gnuplot_replot__, __gnuplot_splot__, |
| 8737 | 769 __gnuplot_save_data__ and __gnuplot_send_inline_data__ have been |
| 770 removed from Octave. These function were incompatible with the | |
| 771 high level graphics handle code. | |
| 6329 | 772 |
| 8885 | 773 ** The Control, Finance and Quaternion functions have been removed. |
| 774 | |
| 775 These functions are now available as separate packages from | |
| 776 | |
| 777 http://octave.sourceforge.net/packages.html | |
| 778 | |
| 779 and can be reinstalled using the Octave package manager (see | |
| 780 the pkg function). | |
| 781 | |
| 782 ** Specific sparse matrix functions removed. | |
| 783 | |
| 784 The following functions, which handled only sparse matrices have | |
| 785 been removed. Instead of calling these functions directly, you | |
| 786 should use the corresponding function without the "sp" prefix. | |
| 8737 | 787 |
| 8885 | 788 spatan2 spcumsum spkron spprod |
| 789 spchol spdet splchol spqr | |
| 790 spchol2inv spdiag splu spsum | |
| 791 spcholinv spfind spmax spsumsqk | |
| 792 spcumprod spinv spmin | |
| 793 | |
| 794 ** Improvements to the debugger. | |
| 795 | |
| 796 The interactive debugging features have been improved. Stopping | |
| 797 on statements with dbstop should work correctly now. Stepping | |
| 798 into and over functions, and stepping one statement at a time | |
| 799 (with dbstep) now works. Moving up and down the call stack with | |
| 800 dbup and dbdown now works. The dbstack function is now available | |
| 801 to print the current function call stack. The new dbquit function | |
| 802 is available to exit the debugging mode. | |
| 803 | |
| 804 ** Improved traceback error messages. | |
| 805 | |
| 806 Traceback error messages are much more concise and easier to | |
| 807 understand. They now display information about the function call | |
| 808 stack instead of the stack of all statements that were active at | |
| 809 the point of the error. | |
|
8014
44d206ae68c9
improve fsolve compatibility
John W. Eaton <jwe@octave.org>
parents:
7990
diff
changeset
|
810 |
| 8737 | 811 ** Object Oriented Programming. |
|
8405
d79dfbff2f9d
document new norm features in NEWS
Jaroslav Hajek <highegg@gmail.com>
parents:
8396
diff
changeset
|
812 |
| 8737 | 813 Octave now includes OOP features and the user can create their own |
| 814 class objects and overloaded functions and operators. For | |
| 815 example, all methods of a class called "myclass" will be found in | |
| 816 a directory "@myclass" on the users path. The class specific | |
| 817 versions of functions and operators take precedence over the | |
| 818 generic versions of these functions. | |
| 819 | |
| 820 New functions related to OOP include | |
| 7189 | 821 |
| 8737 | 822 class inferiorto isobject loadobj methods superiorto |
| 823 | |
| 824 See the Octave manual for more details. | |
| 7038 | 825 |
| 8747 | 826 ** Parsing of Command-style Functions. |
| 827 | |
| 828 Octave now parses command-style functions without needing to first | |
| 829 declare them with "mark_as_command". The rules for recognizing a | |
| 830 command-style function calls are | |
| 831 | |
| 832 * A command must appear as the first word in a statement, | |
| 833 followed by a space. | |
| 834 | |
| 835 * The first character after the space must not be '=' or '(' | |
| 836 | |
| 837 * The next token after the space must not look like a binary | |
| 838 operator. | |
| 839 | |
| 840 These rules should be mostly compatible with the way Matlab parses | |
| 841 command-style function calls and allow users to define commands in | |
| 842 .m files without having to mark them as commands. | |
| 843 | |
| 844 Note that previous versions of Octave allowed expressions like | |
| 845 | |
| 846 x = load -text foo.dat | |
| 847 | |
| 848 but an expression like this will now generate a parse error. In | |
| 849 order to assign the value returned by a function to a variable, | |
| 850 you must use the normal function call syntax: | |
| 851 | |
| 852 x = load ("-text", "foo.dat"); | |
| 853 | |
| 8737 | 854 ** Block comments. |
| 855 | |
| 8747 | 856 Commented code can be between matching "#{" and "#}" or "%{" and |
| 857 "%}" markers, even if the commented code spans several line. This | |
| 858 allows blocks code to be commented, without needing to comment | |
| 859 each line. For example, | |
| 5814 | 860 |
| 8747 | 861 function [s, t] = func (x, y) |
| 862 s = 2 * x; | |
| 863 #{ | |
| 864 s *= y; | |
| 865 t = y + x; | |
| 866 #} | |
|
7990
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
867 endfunction |
| 5814 | 868 |
| 8747 | 869 the lines "s *= y;" and "t = y + x" will not be executed. |
| 8737 | 870 |
|
12400
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
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|
871 ** If any subfunction in a file ends with "end" or "endfunction", then |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
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diff
changeset
|
872 they all must end that way. Previously, Octave accepted |
|
5252f12537f8
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parents:
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diff
changeset
|
873 |
|
5252f12537f8
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parents:
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diff
changeset
|
874 function main () |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
875 ... |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
876 # no endfunction here. |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
877 function sub () |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
878 ... |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
879 endfunction |
|
5252f12537f8
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
880 |
|
5252f12537f8
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
881 but this is no longer allowed. |
|
5252f12537f8
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parents:
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diff
changeset
|
882 |
| 8737 | 883 ** Special treatment in the parser of expressions like "a' * b". |
| 2452 | 884 |
| 8737 | 885 In these cases the transpose is no longer explicitly formed and |
| 886 BLAS libraries are called with the transpose flagged, | |
| 887 significantly improving performance for these kinds of | |
| 888 operations. | |
|
8417
654bcfb937bf
Add the eigs and svds functions
David Bateman <dbateman@free.fr>
parents:
8405
diff
changeset
|
889 |
| 8737 | 890 ** Single Precision data type. |
| 2452 | 891 |
| 8737 | 892 Octave now includes a single precision data type. Single |
| 893 precision variables can be created with the "single" command, or | |
|
9034
52515efc50c0
Documentation cleanup on NEWS file
Rik <rdrider0-list@yahoo.com>
parents:
9031
diff
changeset
|
894 from functions like ones, eye, etc. For example, |
| 5995 | 895 |
| 8737 | 896 single (1) |
| 897 ones (2, 2, "single") | |
| 898 zeros (2, 2, "single") | |
| 899 eye (2, 2, "single") | |
| 900 Inf (2, 2, "single") | |
| 901 NaN (2, 2, "single") | |
| 902 NA (2, 2, "single") | |
| 7279 | 903 |
| 8737 | 904 all create single precision variables. For compatibility with |
| 905 Matlab, mixed double/single precision operators and functions | |
| 906 return single precision types. | |
| 907 | |
| 908 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
|
909 representation of the double precision NA value has changed, and |
|
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
910 so users that make use of data generated by Octave with R or |
|
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
911 visa-versa are warned that compatibility might not be assured. |
| 7279 | 912 |
| 8737 | 913 ** Improved array indexing. |
| 914 | |
| 915 The underlying code used for indexing of arrays has been | |
|
9034
52515efc50c0
Documentation cleanup on NEWS file
Rik <rdrider0-list@yahoo.com>
parents:
9031
diff
changeset
|
916 completely rewritten and indexing is now significantly faster. |
| 8737 | 917 |
| 8755 | 918 ** Improved memory management. |
| 919 | |
| 920 Octave will now attempt to share data in some cases where previously | |
| 921 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
|
922 conversions between cells, structs and cs-lists. This usually reduces |
| 8755 | 923 both time and memory consumption. |
| 9128 | 924 Also, Octave will now attempt to detect and optimize usage of a vector |
| 925 as a stack, when elements are being repeatedly inserted at/removed from | |
| 926 the end of the vector. | |
| 8755 | 927 |
| 8738 | 928 ** Improved performance for reduction operations. |
| 929 | |
| 8755 | 930 The performance of the sum, prod, sumsq, cumsum, cumprod, any, all, |
| 931 max and min functions has been significantly improved. | |
| 8738 | 932 |
| 9006 | 933 ** Sorting and searching. |
| 934 | |
| 935 The performance of sort has been improved, especially when sorting | |
| 10453 | 936 indices are requested. An efficient built-in issorted |
| 937 implementation was added. The sortrows function now uses a more | |
|
12702
013cd94d8d7f
doc: Spelling fixes for various documentation files
John Bradshaw <john@johnbradshaw.org>
parents:
12698
diff
changeset
|
938 efficient algorithm, especially in the homogeneous case. The lookup |
| 10453 | 939 function is now a built-in function performing a binary search, |
| 940 optimized for long runs of close elements. Lookup also works with | |
| 941 cell arrays of strings. | |
| 9006 | 942 |
| 943 ** Range arithmetics | |
| 944 | |
| 10453 | 945 For some operations on ranges, Octave will attempt to keep the |
| 946 result as a range. These include negation, adding a scalar, | |
|
14093
050bc580cb60
doc: Various docstring improvements before 3.6.0 release.
Rik <octave@nomad.inbox5.com>
parents:
14082
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|
947 subtracting a scalar, and multiplying by a scalar. Ranges with zero |
| 10453 | 948 increment are allowed and can be constructed using the built-in |
| 949 function `ones'. | |
| 9006 | 950 |
| 951 ** Various performance improvements. | |
| 952 | |
| 10453 | 953 Performance of a number of other built-in operations and functions |
| 954 was improved, including: | |
| 9006 | 955 |
| 956 * logical operations | |
| 957 * comparison operators | |
| 958 * element-wise power | |
| 959 * accumarray | |
| 960 * cellfun | |
| 961 * isnan | |
| 962 * isinf | |
| 963 * isfinite | |
| 964 * nchoosek | |
| 965 * repmat | |
| 966 * strcmp | |
| 967 | |
| 8737 | 968 ** 64-bit integer arithmetic. |
| 969 | |
| 970 Arithmetic with 64-bit integers (int64 and uint64 types) is fully | |
| 971 supported, with saturation semantics like the other integer types. | |
| 972 Performance of most integer arithmetic operations has been | |
| 973 improved by using integer arithmetic directly. Previously, Octave | |
| 974 performed integer math with saturation semantics by converting the | |
| 975 operands to double precision, performing the operation, and then | |
| 976 converting the result back to an integer value, truncating if | |
| 977 necessary. | |
| 978 | |
| 8885 | 979 ** Diagonal and permutation matrices. |
| 980 | |
| 981 The interpreter can now treat diagonal and permutation matrices as | |
| 982 special objects that store only the non-zero elements, rather than | |
| 983 general full matrices. Therefore, it is now possible to construct | |
| 984 and use these matrices in linear algebra without suffering a | |
| 985 performance penalty due to storing large numbers of zero elements. | |
| 986 | |
| 987 ** Improvements to fsolve. | |
| 988 | |
| 989 The fsolve function now accepts an option structure argument (see | |
| 990 also the optimset function). The INFO values returned from fsolve | |
| 991 have changed to be compatible with Matlab's fsolve function. | |
| 992 Additionally, fsolve is now able to solve overdetermined systems, | |
| 993 complex-differentiable complex systems, systems with a sparse | |
| 994 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
|
995 inputs. It can also be called recursively. |
| 8885 | 996 |
| 8737 | 997 ** Improvements to the norm function. |
| 998 | |
| 999 The norm function is now able to compute row or column norms of a | |
| 1000 matrix in a single call, as well as general matrix p-norms. | |
| 1001 | |
| 1002 ** New functions for computing some eigenvalues or singular values. | |
| 1003 | |
| 1004 The eigs and svds functions have been included in Octave. These | |
| 1005 functions require the ARPACK library (now distributed under a | |
| 1006 GPL-compatible license). | |
| 1007 | |
| 1008 ** 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
|
1009 |
| 8737 | 1010 choldelete cholshift qrdelete qrshift |
| 1011 cholinsert cholupdate qrinsert qrupdate | |
| 1012 | |
| 1013 ** New quadrature functions. | |
| 1014 | |
| 1015 dblquad quadgk quadv triplequad | |
| 1016 | |
| 8885 | 1017 ** New functions for reading and writing images. |
| 1018 | |
| 1019 The imwrite and imread functions have been included in Octave. | |
| 1020 These functions require the GraphicsMagick library. The new | |
| 1021 function imfinfo provides information about an image file (size, | |
| 1022 type, colors, etc.) | |
| 1023 | |
|
9215
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John W. Eaton <jwe@octave.org>
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|
1024 ** The input_event_hook function has been replaced by the pair of |
|
1500d0197484
allow multiple input event hook functions to be installed simultaneously
John W. Eaton <jwe@octave.org>
parents:
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diff
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|
1025 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>
parents:
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changeset
|
1026 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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changeset
|
1027 |
| 8737 | 1028 ** Other miscellaneous new functions. |
|
8370
34960ba08a81
document more new features in the NEWS file
Jaroslav Hajek <highegg@gmail.com>
parents:
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|
1029 |
|
8932
2d0f8692a82e
Add the 'histc' function
Soren Hauberg <hauberg@gmail.com>
parents:
8888
diff
changeset
|
1030 addtodate hypot reallog |
|
2d0f8692a82e
Add the 'histc' function
Soren Hauberg <hauberg@gmail.com>
parents:
8888
diff
changeset
|
1031 bicgstab idivide realpow |
| 9006 | 1032 cellslices info realsqrt |
| 1033 cgs interp1q rectint | |
| 1034 command_line_path isdebugmode regexptranslate | |
| 1035 contrast isfloat restoredefaultpath | |
| 1036 convn isstrprop roundb | |
| 1037 cummin log1p rundemos | |
| 1038 cummax lsqnonneg runlength | |
| 1039 datetick matlabroot saveobj | |
| 1040 display namelengthmax spaugment | |
| 1041 expm1 nargoutchk strchr | |
| 1042 filemarker pathdef strvcat | |
| 1043 fstat perl subspace | |
| 1044 full prctile symvar | |
| 1045 fzero quantile treelayout | |
| 1046 genvarname re_read_readline_init_file validatestring | |
| 1047 histc | |
|
8370
34960ba08a81
document more new features in the NEWS file
Jaroslav Hajek <highegg@gmail.com>
parents:
8292
diff
changeset
|
1048 |
| 8885 | 1049 ** Changes to strcat. |
| 1050 | |
| 1051 The strcat function is now compatible with Matlab's strcat | |
| 1052 function, which removes trailing whitespace when concatenating | |
| 1053 character strings. For example | |
| 1054 | |
| 1055 strcat ('foo ', 'bar') | |
| 1056 ==> 'foobar' | |
| 1057 | |
| 1058 The new function cstrcat provides the previous behavior of | |
| 1059 Octave's strcat. | |
| 1060 | |
| 1061 ** Improvements to the help functions. | |
| 1062 | |
|
9034
52515efc50c0
Documentation cleanup on NEWS file
Rik <rdrider0-list@yahoo.com>
parents:
9031
diff
changeset
|
1063 The help system has been mostly re-implemented in .m files to make |
| 8885 | 1064 it easier to modify. Performance of the lookfor function has been |
| 1065 greatly improved by caching the help text from all functions that | |
| 1066 are distributed with Octave. The pkg function has been modified | |
| 1067 to generate cache files for external packages when they are | |
| 1068 installed. | |
| 1069 | |
|
8888
0c7b0049c023
mark create_set as deprecated in 3.2, not 3.0
John W. Eaton <jwe@octave.org>
parents:
8885
diff
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|
1070 ** Deprecated functions. |
|
0c7b0049c023
mark create_set as deprecated in 3.2, not 3.0
John W. Eaton <jwe@octave.org>
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|
1071 |
|
0c7b0049c023
mark create_set as deprecated in 3.2, not 3.0
John W. Eaton <jwe@octave.org>
parents:
8885
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|
1072 The following functions were deprecated in Octave 3.0 and will be |
|
11112
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1073 removed from Octave 3.4 (or whatever version is the second major |
|
8888
0c7b0049c023
mark create_set as deprecated in 3.2, not 3.0
John W. Eaton <jwe@octave.org>
parents:
8885
diff
changeset
|
1074 release after 3.0): |
|
0c7b0049c023
mark create_set as deprecated in 3.2, not 3.0
John W. Eaton <jwe@octave.org>
parents:
8885
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changeset
|
1075 |
|
11112
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1076 beta_cdf geometric_pdf pascal_pdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1077 beta_inv geometric_rnd pascal_rnd |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1078 beta_pdf hypergeometric_cdf poisson_cdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1079 beta_rnd hypergeometric_inv poisson_inv |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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diff
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|
1080 binomial_cdf hypergeometric_pdf poisson_pdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1081 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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diff
changeset
|
1082 binomial_pdf intersection polyinteg |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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changeset
|
1083 binomial_rnd is_bool setstr |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1084 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
|
1085 chisquare_inv is_list struct_elements |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1086 chisquare_pdf is_matrix t_cdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1087 chisquare_rnd is_scalar t_inv |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1088 clearplot is_square t_pdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1089 clg is_stream t_rnd |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1090 com2str is_struct uniform_cdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1091 exponential_cdf is_symmetric uniform_inv |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1092 exponential_inv is_vector uniform_pdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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changeset
|
1093 exponential_pdf isstr uniform_rnd |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1094 exponential_rnd lognormal_cdf weibcdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1095 f_cdf lognormal_inv weibinv |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1096 f_inv lognormal_pdf weibpdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
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|
1097 f_pdf lognormal_rnd weibrnd |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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diff
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|
1098 f_rnd meshdom weibull_cdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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diff
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|
1099 gamma_cdf normal_cdf weibull_inv |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
1100 gamma_inv normal_inv weibull_pdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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parents:
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|
1101 gamma_pdf normal_pdf weibull_rnd |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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parents:
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diff
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|
1102 gamma_rnd normal_rnd wiener_rnd |
|
8888
0c7b0049c023
mark create_set as deprecated in 3.2, not 3.0
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|
1103 geometric_cdf pascal_cdf |
|
0c7b0049c023
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|
1104 geometric_inv pascal_inv |
|
0c7b0049c023
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John W. Eaton <jwe@octave.org>
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|
1105 |
|
0c7b0049c023
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parents:
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|
1106 The following functions are now deprecated in Octave 3.2 and will |
|
11112
8ea4cf59c41b
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diff
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|
1107 be removed from Octave 3.6 (or whatever version is the second major |
|
8888
0c7b0049c023
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parents:
8885
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|
1108 release after 3.2): |
|
0c7b0049c023
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1109 |
|
0c7b0049c023
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parents:
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|
1110 create_set spcholinv spmax |
|
0c7b0049c023
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parents:
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|
1111 dmult spcumprod spmin |
|
0c7b0049c023
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|
1112 iscommand spcumsum spprod |
|
0c7b0049c023
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|
1113 israwcommand spdet spqr |
|
0c7b0049c023
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John W. Eaton <jwe@octave.org>
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|
1114 lchol spdiag spsum |
|
0c7b0049c023
mark create_set as deprecated in 3.2, not 3.0
John W. Eaton <jwe@octave.org>
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|
1115 loadimage spfind spsumsq |
|
0c7b0049c023
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|
1116 mark_as_command spinv str2mat |
|
0c7b0049c023
mark create_set as deprecated in 3.2, not 3.0
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|
1117 mark_as_rawcommand spkron unmark_command |
|
0c7b0049c023
mark create_set as deprecated in 3.2, not 3.0
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|
1118 spatan2 splchol unmark_rawcommand |
|
0c7b0049c023
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|
1119 spchol split |
|
0c7b0049c023
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|
1120 spchol2inv splu |
|
0c7b0049c023
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|
1121 |
|
7990
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
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changeset
|
1122 See NEWS.3 for old news. |