Mercurial > octave-nkf
annotate NEWS @ 14250:14d602c4f6e8 gui
Merge default onto gui
| author | Jordi Gutiérrez Hermoso <jordigh@octave.org> |
|---|---|
| date | Sun, 22 Jan 2012 15:13:22 -0500 |
| parents | c72ad9f5fa2e 053404893d02 |
| children | d738c29a2528 |
| rev | line source |
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1 Summary of important user-visible changes for version 4.0: |
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2 --------------------------------------------------------- |
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3 |
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4 ** A new GUI is now available with Octave. |
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5 |
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6 Summary of important user-visible changes for version 3.6: |
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7 --------------------------------------------------------- |
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8 |
| 14188 | 9 ** The PCRE library is now required to build Octave. If a pre-compiled |
| 10 package does not exist for your system, you can find PCRE sources | |
| 11 at http://www.pcre.org | |
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12 |
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13 ** The ARPACK library is no longer distributed with Octave. |
| 14188 | 14 If you need the eigs or svds functions you must provide an |
| 15 external ARPACK through a package manager or by compiling it | |
| 16 yourself. If a pre-compiled package does not exist for your system, | |
| 17 you can find the current ARPACK sources at | |
| 18 http://forge.scilab.org/index.php/p/arpack-ng | |
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19 |
| 14082 | 20 ** Many of Octave's binary operators (.*, .^, +, -, ...) now perform |
| 21 automatic broadcasting for array operations that allows you to use | |
| 22 operator notation instead of calling bsxfun or expanding arrays (and | |
| 23 unnecessarily wasting memory) with repmat or similar idioms. For | |
| 24 example, to scale the columns of a matrix by the elements of a row | |
| 25 vector, you may now write | |
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26 |
| 14082 | 27 rv .* M |
| 28 | |
| 29 In this expression, the number of elements of rv must match the | |
| 30 number of columns of M. The following operators are affected: | |
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31 |
| 14082 | 32 plus + .+ |
| 33 minus - .- | |
| 34 times .* | |
| 35 rdivide ./ | |
| 36 ldivide .\ | |
| 37 power .^ .** | |
| 38 lt < | |
| 39 le <= | |
| 40 eq == | |
| 41 gt > | |
| 42 ge >= | |
| 43 ne != ~= | |
| 44 and & | |
| 45 or | | |
| 46 atan2 | |
| 47 hypot | |
| 48 max | |
| 49 min | |
| 50 mod | |
| 51 rem | |
| 52 xor | |
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53 |
| 14082 | 54 additionally, since the A op= B assginment operators are equivalent |
| 55 to A = A op B, the following operators are also affected: | |
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56 |
| 14082 | 57 += -= .+= .-= .*= ./= .\= .^= .**= &= |= |
| 58 | |
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59 See the "Broadcasting" section in the new "Vectorization and Faster |
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60 Code Execution" chapter of the manual for more details. |
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61 |
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62 ** Octave now features a profiler, thanks to the work of Daniel Kraft |
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63 under the Google Summer of Code mentorship program. The manual has |
| 13262 | 64 been updated to reflect this addition. The new user-visible |
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65 functions are profile, profshow, and profexplore. |
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66 |
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67 ** Overhaul of statistical distribution functions |
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68 |
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69 Functions now return "single" outputs for inputs of class "single". |
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70 |
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71 75% reduction in memory usage through use of logical indexing. |
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72 |
| 14188 | 73 Random sample functions now use the same syntax as rand and accept |
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74 a comma separated list of dimensions or a dimension vector. |
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75 |
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76 Functions have been made Matlab-compatible with regard to special |
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77 cases (probability on boundaries, probabilities for values outside |
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78 distribution, etc.). This may cause subtle changes to existing |
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79 scripts. |
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80 |
| 14188 | 81 negative binomial function has been extended to real, non-integer |
| 82 inputs. The discrete_inv fucntion now returns v(1) for 0 instead of | |
| 83 NaN. The nbincdf fucntion has bbeen recoded to use a closed form | |
| 84 solution with betainc. | |
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85 |
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86 ** strread, textscan, and textread have been completely revamped. |
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87 |
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88 They now support nearly all Matlab functionality including: |
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89 |
| 14082 | 90 * Matlab-compatible whitespace and delimiter defaults |
| 91 | |
| 92 * Matlab-compatible options: 'whitespace', treatasempty', format | |
| 93 string repeat count, user-specified comment style, uneven-length | |
| 94 output arrays, %n and %u conversion specifiers (provisionally) | |
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95 |
| 14082 | 96 ** All .m string functions have been modified for better performance or |
| 97 greater Matlab compatibility. Performance gains of 15X-30X have | |
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98 been demonstrated. Operations on cell array of strings no longer pay |
| 14082 | 99 quite as high a penalty as those on 2-D character arrays. |
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100 |
| 14082 | 101 deblank: Now requires character or cellstr input. |
| 102 | |
| 103 strtrim: Now requires character or cellstr input. | |
| 104 No longer trims nulls ("\0") from string for Matlab | |
| 105 compatibility. | |
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106 |
| 14082 | 107 strmatch: Follows documentation precisely and ignores trailing spaces |
| 108 in pattern and in string. Note that this is documented | |
| 109 Matlab behavior but the implementation apparently does | |
| 110 not always follow it. | |
| 111 | |
| 112 substr: Now possible to specify a negative LEN option which | |
| 113 extracts to within LEN of the end of the string. | |
| 114 | |
| 115 strtok: Now accepts cellstr input. | |
| 116 | |
| 117 base2dec, bin2dec, hex2dec: | |
| 118 Now accept cellstr inputs. | |
| 119 | |
| 120 dec2base, dec2bin, dec2hex: | |
| 121 Now accept cellstr inputs. | |
| 122 | |
| 123 index, rindex: | |
| 124 Now accept 2-D character array input. | |
| 125 | |
| 126 strsplit: Now accepts 2-D character array input. | |
| 13262 | 127 |
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128 ** Geometry functions derived from Qhull (convhull, delaunay, voronoi) |
| 14082 | 129 have been revamped. The options passed to the underlying qhull |
| 130 command have been changed for better results or for Matlab | |
| 131 compatibility. | |
| 132 | |
| 133 convhull: Default options are "Qt" for 2D, 3D, 4D inputs | |
| 134 Default options are "Qt Qx" for 5D and higher | |
| 135 | |
| 136 delaunay: Default options are "Qt Qbb Qc Qz" for 2D and 3D inputs | |
| 137 Default options are "Qt Qbb Qc Qx" for 4D and higher | |
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138 |
| 14082 | 139 voronoi: No default arguments |
| 140 | |
| 141 ** Date/Time functions updated. Millisecond support with FFF format | |
| 142 string now supported. | |
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143 |
| 14082 | 144 datestr: Numerical formats 21, 22, 29 changed to match Matlab. |
| 145 Now accepts cellstr inputs. | |
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146 |
| 14082 | 147 ** The following warning IDs have been removed: |
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148 |
| 14082 | 149 Octave:associativity-change |
| 150 Octave:complex-cmp-ops | |
| 151 Octave:empty-list-elements | |
| 152 Octave:fortran-indexing | |
| 153 Octave:precedence-change | |
| 154 | |
| 155 ** The warning ID Octave:string-concat has been renamed to | |
| 156 Octave:mixed-string-concat. | |
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157 |
| 14082 | 158 ** Octave now includes the following Matlab-compatible preference |
| 159 functions: | |
| 13262 | 160 |
| 14082 | 161 addpref getpref ispref rmpref setpref |
| 13262 | 162 |
| 14082 | 163 ** The following Matlab-compatible handle graphics functions have been |
| 164 added: | |
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165 |
| 14082 | 166 guidata uipanel uitoolbar |
| 167 guihandles uipushtool uiwait | |
| 168 uicontextmenu uiresume waitfor | |
| 169 uicontrol uitoggletool | |
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170 |
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171 The uiXXX functions above are experimental. |
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172 |
| 14082 | 173 Except for uiwait and uiresume, the uiXXX functions are not |
| 174 supported with the the FLTK+OpenGL graphics toolkit. | |
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175 |
| 14082 | 176 The gnuplot graphics toolkit does not support any of the uiXXX |
| 177 functions nor the waitfor function. | |
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178 |
| 14082 | 179 ** New keyword parfor (parallel for loop) is now recognized as a valid |
| 180 keyword. Implementation, however, is still mapped to an ordinary | |
| 181 for loop. | |
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182 |
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183 ** Other new functions added in 3.6.0: |
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184 |
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185 bicg nthargout usejava |
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186 is_dq_string narginchk waitbar |
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187 is_sq_string python zscore |
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188 is_function_handle register_graphics_toolkit |
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189 loaded_graphics_toolkits recycle |
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190 |
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191 ** Deprecated functions. |
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192 |
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193 The following functions were deprecated in Octave 3.2 and have been |
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194 removed from Octave 3.6. |
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195 |
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196 create_set spcholinv splu |
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197 dmult spcumprod spmax |
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198 iscommand spcumsum spmin |
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199 israwcommand spdet spprod |
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200 lchol spdiag spqr |
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201 loadimage spfind spsum |
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202 mark_as_command sphcat spsumsq |
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203 mark_as_rawcommand spinv spvcat |
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204 spatan2 spkron str2mat |
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205 spchol splchol unmark_command |
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206 spchol2inv split unmark_rawcommand |
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207 |
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208 The following functions have been deprecated in Octave 3.6 and will |
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209 be removed from Octave 3.10 (or whatever version is the second major |
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210 release after 3.6): |
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211 |
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212 cut is_duplicate_entry |
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213 cor polyderiv |
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214 corrcoef shell_cmd |
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215 __error_text__ studentize |
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216 error_text sylvester_matrix |
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217 |
| 13251 | 218 Summary of important user-visible changes for version 3.4.3: |
| 219 ----------------------------------------------------------- | |
| 220 | |
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221 ** Octave 3.4.3 is a bug fixing release. |
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222 |
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223 Summary of important user-visible changes for version 3.4.2: |
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224 ----------------------------------------------------------- |
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225 |
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226 ** Octave 3.4.2 fixes some minor installation problems that affected |
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227 version 3.4.1. |
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228 |
| 12709 | 229 Summary of important user-visible changes for version 3.4.1: |
| 230 ----------------------------------------------------------- | |
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231 |
| 12709 | 232 ** Octave 3.4.1 is primarily a bug fixing release. |
| 233 | |
| 234 ** IMPORTANT note about binary incompatibility in this release: | |
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235 |
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236 Binary compatibility for all 3.4.x releases was originally planned, |
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237 but this is impossible for the 3.4.1 release due to a bug in the way |
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238 shared libraries were built in Octave 3.4.0. Because of this bug, |
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239 .oct files built for Octave 3.4.0 must be recompiled before they |
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240 will work with Octave 3.4.1. |
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241 |
| 12709 | 242 Given that there would be binary incompatibilities with shared |
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243 libraries going from Octave 3.4.0 to 3.4.1, the following |
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244 incompatible changes were also made in this release: |
| 12709 | 245 |
| 246 * The Perl Compatible Regular Expression (PCRE) library is now | |
| 247 required to build Octave. | |
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248 |
| 12712 | 249 * Octave's libraries and .oct files are now installed in |
| 250 subdirectories of $libdir instead of $libexecdir. | |
| 251 | |
| 12709 | 252 Any future Octave 3.4.x release versions should remain binary |
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253 compatible with Octave 3.4.1 as proper library versioning is now |
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254 being used as recommended by the libtool manual. |
| 12709 | 255 |
| 256 ** The following functions have been deprecated in Octave 3.4.1 and will | |
| 257 be removed from Octave 3.8 (or whatever version is the second major | |
| 258 release after 3.4): | |
| 259 | |
| 260 cquad is_duplicate_entry perror strerror | |
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261 |
| 12709 | 262 ** The following functions are new in 3.4.1: |
| 263 | |
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264 colstyle gmres iscolumn isrow mgorth nproc rectangle |
| 12709 | 265 |
| 266 ** The get_forge_pkg function is now private. | |
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267 |
| 12709 | 268 ** The rectangle_lw, rectangle_sw, triangle_lw, and triangle_sw |
| 269 functions are now private. | |
| 270 | |
| 271 ** The logistic_regression_derivatives and logistic_regression_likelihood | |
| 272 functions are now private. | |
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273 |
| 12739 | 274 ** ChangeLog files in the Octave sources are no longer maintained |
| 275 by hand. Instead, there is a single ChangeLog file generated from | |
| 276 the Mercurial version control commit messages. Older ChangeLog | |
| 277 information can be found in the etc/OLD-ChangeLogs directory in the | |
| 278 source distribution. | |
| 279 | |
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280 Summary of important user-visible changes for version 3.4: |
| 9352 | 281 --------------------------------------------------------- |
| 282 | |
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283 ** BLAS and LAPACK libraries are now required to build Octave. The |
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284 subset of the reference BLAS and LAPACK libraries has been removed |
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285 from the Octave sources. |
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286 |
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287 ** The ARPACK library is now distributed with Octave so it no longer |
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288 needs to be available as an external dependency when building |
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289 Octave. |
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290 |
| 10118 | 291 ** The `lookup' function was extended to be more useful for |
| 292 general-purpose binary searching. Using this improvement, the | |
| 293 ismember function was rewritten for significantly better | |
| 294 performance. | |
| 9352 | 295 |
| 296 ** Real, integer and logical matrices, when used in indexing, will now | |
| 297 cache the internal index_vector value (zero-based indices) when | |
| 298 successfully used as indices, eliminating the conversion penalty for | |
| 10118 | 299 subsequent indexing by the same matrix. In particular, this means it |
| 300 is no longer needed to avoid repeated indexing by logical arrays | |
| 301 using find for performance reasons. | |
| 9888 | 302 |
| 10118 | 303 ** Logical matrices are now treated more efficiently when used as |
| 304 indices. Octave will keep the index as a logical mask unless the | |
| 305 ratio of true elements is small enough, using a specialized | |
| 306 code. Previously, all logical matrices were always first converted | |
| 307 to index vectors. This results in savings in both memory and | |
| 308 computing time. | |
| 9480 | 309 |
| 10118 | 310 ** The `sub2ind' and `ind2sub' functions were reimplemented as compiled |
| 311 functions for better performance. These functions are now faster, | |
| 312 can deliver more economized results for ranges, and can reuse the | |
| 313 index cache mechanism described in previous paragraph. | |
| 314 | |
| 315 ** The built-in function equivalents to associative operators (`plus', | |
| 316 `times', `mtimes', `and', and `or') have been extended to accept | |
| 317 multiple arguments. This is especially useful for summing | |
| 318 (multiplying, etc.) lists of objects (of possibly distinct types): | |
| 9408 | 319 |
| 9449 | 320 matrix_sum = plus (matrix_list{:}); |
| 321 | |
| 10118 | 322 ** An FTP object type based on libcurl has been implemented. These |
| 323 objects allow ftp connections, downloads and uploads to be | |
| 324 managed. For example, | |
| 9880 | 325 |
| 10118 | 326 fp = ftp ("ftp.octave.org); |
| 327 cd (fp, "gnu/octave"); | |
| 328 mget (fp, "octave-3.2.3.tar.bz2"); | |
| 329 close (fp); | |
| 9880 | 330 |
| 10118 | 331 ** The default behavior of `assert (observed, expected)' has been |
| 332 relaxed to employ less strict checking that does not require the | |
| 333 internals of the values to match. This avoids previously valid | |
| 334 tests from breaking due to new internal classes introduced in future | |
| 335 Octave versions. | |
| 9449 | 336 |
| 337 For instance, all of these assertions were true in Octave 3.0.x | |
| 338 but false in 3.2.x due to new optimizations and improvements: | |
| 339 | |
| 340 assert (2*linspace (1, 5, 5), 2*(1:5)) | |
| 341 assert (zeros (0, 0), []) | |
| 342 assert (2*ones (1, 5), (2) (ones (1,5))) | |
| 9462 | 343 |
| 10118 | 344 ** The behavior of library functions `ismatrix', `issquare', and |
| 345 `issymmetric' has been changed for better consistency. | |
| 9873 | 346 |
| 10292 | 347 * The `ismatrix' function now returns true for all numeric, |
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348 logical and character 2-D or N-D matrices. Previously, `ismatrix' |
| 10292 | 349 returned false if the first or second dimension was zero. |
| 350 Hence, `ismatrix ([])' was false, | |
| 351 while `ismatrix (zeros (1,2,0))' was true. | |
| 9873 | 352 |
| 10118 | 353 * The `issquare' function now returns a logical scalar, and is |
| 354 equivalent to the expression | |
| 355 | |
| 356 ismatrix (x) && ndims (x) == 2 && rows (x) == columns (x) | |
| 357 | |
| 358 The dimension is no longer returned. As a result, `issquare ([])' | |
| 359 now yields true. | |
| 9873 | 360 |
| 10118 | 361 * The `issymmetric' function now checks for symmetry instead of |
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362 Hermitianness. For the latter, ishermitian was created. Also, |
| 10118 | 363 logical scalar is returned rather than the dimension, so |
| 364 `issymmetric ([])' is now true. | |
| 9873 | 365 |
| 10118 | 366 ** Function handles are now aware of overloaded functions. If a |
| 367 function is overloaded, the handle determines at the time of its | |
| 368 reference which function to call. A non-overloaded version does not | |
| 369 need to exist. | |
| 9873 | 370 |
| 10118 | 371 ** Overloading functions for built-in classes (double, int8, cell, |
| 372 etc.) is now compatible with Matlab. | |
| 9408 | 373 |
| 10323 | 374 ** Function handles can now be compared with the == and != operators, |
| 375 as well as the `isequal' function. | |
| 376 | |
| 10118 | 377 ** Performance of concatenation (using []) and the functions `cat', |
| 378 `horzcat', and `vertcat' has been improved for multidimensional | |
| 379 arrays. | |
| 10117 | 380 |
| 9547 | 381 ** The operation-assignment operators +=, -=, *= and /= now behave more |
| 10118 | 382 efficiently in certain cases. For instance, if M is a matrix and S a |
| 383 scalar, then the statement | |
| 9547 | 384 |
| 10118 | 385 M += S; |
| 9547 | 386 |
| 10118 | 387 will operate on M's data in-place if it is not shared by another |
| 388 variable, usually increasing both time and memory efficiency. | |
| 9547 | 389 |
| 9558 | 390 Only selected common combinations are affected, namely: |
| 9547 | 391 |
| 392 matrix += matrix | |
| 393 matrix -= matrix | |
| 9558 | 394 matrix .*= matrix |
| 395 matrix ./= matrix | |
| 396 | |
| 9547 | 397 matrix += scalar |
| 398 matrix -= scalar | |
| 399 matrix *= scalar | |
| 400 matrix /= scalar | |
| 9558 | 401 |
| 9552 | 402 logical matrix |= logical matrix |
| 403 logical matrix &= logical matrix | |
| 9547 | 404 |
| 10118 | 405 where matrix and scalar belong to the same class. The left-hand |
| 406 side must be a simple variable reference. | |
| 9888 | 407 |
| 10118 | 408 Moreover, when unary operators occur in expressions, Octave will |
| 409 also try to do the operation in-place if it's argument is a | |
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410 temporary expression. |
| 9589 | 411 |
| 10118 | 412 ** The effect of comparison operators (<, >, <=, and >=) applied to |
| 413 complex numbers has changed to be consistent with the strict | |
| 414 ordering defined by the `max', `min', and `sort' functions. More | |
| 415 specifically, complex numbers are compared by lexicographical | |
| 416 comparison of the pairs `[abs(z), arg(z)]'. Previously, only real | |
| 14188 | 417 parts were compared; this can be trivially achieved by converting |
| 418 the operands to real values with the `real' function. | |
| 9547 | 419 |
| 10118 | 420 ** The automatic simplification of complex computation results has |
| 421 changed. Octave will now simplify any complex number with a zero | |
| 422 imaginary part or any complex matrix with all elements having zero | |
| 423 imaginary part to a real value. Previously, this was done only for | |
| 424 positive zeros. Note that the behavior of the complex function is | |
| 425 unchanged and it still produces a complex value even if the | |
| 426 imaginary part is zero. | |
| 9826 | 427 |
| 10118 | 428 ** As a side effect of code refactoring in liboctave, the binary |
| 429 logical operations are now more easily amenable to compiler | |
| 430 optimizations and are thus significantly faster. | |
| 9595 | 431 |
| 10118 | 432 ** Octave now allows user-defined `subsasgn' methods to optimize out |
| 433 redundant copies. For more information, see the manual. | |
| 9595 | 434 |
| 10453 | 435 ** More efficient matrix division handling. Octave is now able to |
| 10118 | 436 handle the expressions |
| 9664 | 437 |
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438 M' \ V |
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439 M.' \ V |
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440 V / M |
| 9664 | 441 |
| 10118 | 442 (M is a matrix and V is a vector) more efficiently in certain cases. |
| 443 In particular, if M is triangular, all three expressions will be | |
| 444 handled by a single call to xTRTRS (from LAPACK), with appropriate | |
| 10453 | 445 flags. Previously, all three expressions required a physical |
| 10118 | 446 transpose of M. |
| 9664 | 447 |
| 10118 | 448 ** More efficient handling of certain mixed real-complex matrix |
| 449 operations. For instance, if RM is a real matrix and CM a complex | |
| 450 matrix, | |
| 9664 | 451 |
| 10118 | 452 RM * CM |
| 9664 | 453 |
| 454 can now be evaluated either as | |
| 455 | |
| 456 complex (RM * real (CM), RM * imag (CM)) | |
| 457 | |
| 458 or as | |
| 459 | |
| 460 complex (RM) * CM, | |
| 461 | |
| 10453 | 462 depending on the dimensions. The first form requires more |
| 463 temporaries and copying, but halves the FLOP count, which normally | |
| 464 brings better performance if RM has enough rows. Previously, the | |
| 465 second form was always used. | |
| 9664 | 466 |
| 11111 | 467 Matrix division is similarly affected. |
| 9664 | 468 |
| 10118 | 469 ** More efficient handling of triangular matrix factors returned from |
| 470 factorizations. The functions for computing QR, LU and Cholesky | |
| 471 factorizations will now automatically return the triangular matrix | |
| 472 factors with proper internal matrix_type set, so that it won't need | |
| 473 to be computed when the matrix is used for division. | |
| 9717 | 474 |
| 10118 | 475 ** The built-in `sum' function now handles the non-native summation |
| 476 (i.e., double precision sum of single or integer inputs) more | |
| 477 efficiently, avoiding a temporary conversion of the whole input | |
| 478 array to doubles. Further, `sum' can now accept an extra option | |
| 479 argument, using a compensated summation algorithm rather than a | |
| 480 straightforward sum, which significantly improves precision if lots | |
| 481 of cancellation occurs in the summation. | |
| 9717 | 482 |
| 10118 | 483 ** The built-in `bsxfun' function now uses optimized code for certain |
| 484 cases where built-in operator handles are passed in. Namely, the | |
| 485 optimizations concern the operators `plus', `minus', `times', | |
| 486 `ldivide', `rdivide', `power', `and', `or' (for logical arrays), | |
| 487 the relational operators `eq', `ne', `lt', `le', `gt', `ge', and the | |
| 488 functions `min' and `max'. Optimizations only apply when both | |
| 489 operands are of the same built-in class. Mixed real/complex and | |
| 490 single/double operations will first convert both operands to a | |
| 491 common type. | |
| 9745 | 492 |
| 10118 | 493 ** The `strfind' and `strrep' functions now have compiled |
| 494 implementations, facilitating significantly more efficient searching | |
| 495 and replacing in strings, especially with longer patterns. The code | |
| 496 of `strcat' has been vectorized and is now much more efficient when | |
| 497 many strings are concatenated. The `strcmpi' and `strncmpi' | |
| 498 functions are now built-in functions, providing better performance. | |
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499 |
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500 ** 'str2double' now has a compiled implementation and the API conforms |
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501 to Matlab. The additional Octave-specific features of returning a |
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502 boolean matrix indicating which elements were successfully converted |
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503 has been removed. |
| 10208 | 504 |
| 10453 | 505 ** Matlab-style ignoring input and output function arguments using |
| 11111 | 506 tilde (~) is now supported. Ignored output arguments may be |
| 507 detected from a function using the built-in function `isargout'. | |
| 508 For more details, consult the manual. | |
| 10886 | 509 |
| 10453 | 510 ** The list datatype, deprecated since the introduction of cells, has |
| 511 been removed. | |
| 10276 | 512 |
| 10453 | 513 ** The accumarray function has been optimized and is now significantly |
| 514 faster in certain important cases. | |
| 10054 | 515 |
| 10292 | 516 ** The behavior of isreal and isnumeric functions was changed to be more |
| 517 Matlab-compatible. | |
| 518 | |
| 10406 | 519 ** The integer math & conversion warnings (Octave:int-convert-nan, |
| 520 Octave:int-convert-non-int-val, Octave:int-convert-overflow, | |
| 11111 | 521 Octave:int-math-overflow) have been removed. |
| 10406 | 522 |
| 10453 | 523 ** rem and mod are now built-in functions. They also handle integer |
| 524 types efficiently using integer arithmetic. | |
| 10437 | 525 |
| 10536 | 526 ** Sparse indexing and indexed assignment has been mostly rewritten. |
| 527 Since Octave uses compressed column storage for sparse matrices, | |
| 528 major attention is devoted to operations manipulating whole columns. | |
| 529 Such operations are now significantly faster, as well as some other | |
| 530 important cases. | |
| 531 | |
| 532 Further, it is now possible to pre-allocate a sparse matrix and | |
| 533 subsequently fill it by assignments, provided they meet certain | |
| 534 conditions. For more information, consult the `spalloc' function, | |
| 535 which is no longer a mere dummy. Consequently, nzmax and nnz are no | |
| 11111 | 536 longer always equal in Octave. Octave may also produce a matrix |
| 537 with nnz < nzmax as a result of other operations, so you should | |
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538 consistently use nnz unless you really want to use nzmax (i.e., the |
| 11111 | 539 space allocated for nonzero elements). |
| 10536 | 540 |
| 541 Sparse concatenation is also affected, and concatenating sparse | |
| 542 matrices, especially larger collections, is now significantly more | |
| 11111 | 543 efficient. This applies to both the [] operator and the |
| 10536 | 544 cat/vertcat/horzcat functions. |
| 545 | |
| 11111 | 546 ** It is now possible to optionally employ the xGESDD LAPACK drivers |
| 14188 | 547 for computing the singular value decomposition using svd, instead |
| 11111 | 548 of the default xGESVD, using the configuration pseudo-variable |
| 549 svd_driver. The xGESDD driver can be up to 6x times faster when | |
| 550 singular vectors are requested, but is reported to be somewhat less | |
| 10639 | 551 robust on highly ill-conditioned matrices. |
| 552 | |
| 553 ** Configuration pseudo-variables, such as page_screen_output or | |
| 554 confirm_recursive_rmdir (or the above mentioned svd_driver), now | |
| 555 accept a "local" option as second argument, requesting the change | |
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556 to be undone when the current function returns: |
| 10639 | 557 |
| 558 function [status, msg] = rm_rf (dir) | |
| 559 confirm_recursive_rmdir (false, "local"); | |
| 560 [status, msg] = rmdir (dir, "s"); | |
| 561 ... | |
| 562 endfunction | |
| 563 | |
| 564 Upon return, confirm_recursive_rmdir will be restored to the value | |
| 565 it had on entry to the function, even if there were subsequent | |
| 566 changes to the variable in function rm_rf or any of the functions | |
| 567 it calls. | |
| 568 | |
| 11111 | 569 ** pkg now accepts a -forge option for downloading and installing |
| 570 packages from Octave Forge automatically. For example, | |
| 10774 | 571 |
| 572 pkg install -forge general | |
| 573 | |
| 11111 | 574 will automatically download the latest release of the general |
|
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575 package and attempt to install it. No automatic resolving of |
| 11111 | 576 dependencies is provided. Further, |
| 10639 | 577 |
| 10774 | 578 pkg list -forge |
| 579 | |
| 580 can be used to list all available packages. | |
| 581 | |
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582 ** The internal data representation of structs has been completely |
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583 rewritten to make certain optimizations feasible. The field data |
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584 can now be shared between structs with equal keys but different |
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585 dimensions or values, making operations that preserve the fields |
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586 faster. Economized storage is now used for scalar structs (just |
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587 like most other scalars), making their usage more |
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588 memory-efficient. Certain array-like operations on structs |
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589 (concatenation, uniform cellfun, num2cell) have gained a |
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590 significant speed-up. Additionally, the octave_scalar_map class |
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591 now provides a simpler interface to work with scalar structs within |
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592 a C++ DLD function. |
| 10639 | 593 |
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594 ** Two new formats are available for displaying numbers: |
| 11111 | 595 |
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596 format short eng |
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597 format long eng |
| 11111 | 598 |
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599 Both display numbers in engineering notation, i.e., mantissa + |
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600 exponent where the exponent is a multiple of 3. |
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601 |
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602 ** The following functions are new in Octave 3.4: |
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603 accumdim erfcx nfields pqpnonneg uigetdir |
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604 bitpack fileread nth_element quadcc uigetfile |
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605 bitunpack fminbnd onCleanup randi uiputfile |
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606 blkmm fskipl pbaspect repelems uimenu |
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607 cbrt ifelse pie3 reset whitebg |
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608 curl ishermitian powerset rsf2csf |
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609 chop isindex ppder saveas |
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610 daspect luupdate ppint strread |
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611 divergence merge ppjumps textread |
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612 |
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613 ** Using the image function to view images with external programs such |
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614 as display, xv, and xloadimage is no longer supported. The |
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615 image_viewer function has also been removed. |
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616 |
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617 ** The behavior of struct assignments to non-struct values has been |
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618 changed. Previously, it was possible to overwrite an arbitrary |
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619 value: |
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620 |
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621 a = 1; |
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622 a.x = 2; |
| 10873 | 623 |
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624 This is no longer possible unless a is an empty matrix or cell |
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625 array. |
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626 |
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627 ** The dlmread function has been extended to allow specifying a custom |
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628 value for empty fields. |
| 10829 | 629 |
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630 ** The dlmread and dlmwrite functions have been modified to accept |
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631 file IDs (as returned by fopen) in addition to file names. |
| 11111 | 632 |
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633 ** Octave can now optimize away the interpreter overhead of an |
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634 anonymous function handle, if the function simply calls another |
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635 function or handle with some of its parameters bound to certain |
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636 values. Example: |
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637 |
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638 f = @(x) sum (x, 1); |
| 10966 | 639 |
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640 When f is called, the call is forwarded to @sum with the constant 1 |
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641 appended, and the anonymous function call does not occur on the |
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642 call stack. |
| 10829 | 643 |
| 12424 | 644 ** For compatibility with Matlab, mu2lin (x) is now equivalent to |
| 645 mu2lin (x, 0). | |
| 646 | |
| 647 ** The new function `history_control' may be used to control the way | |
| 648 command lines are added to the history list when Octave is using | |
| 649 readline for command-line editing. For example | |
| 650 | |
| 651 history_control ("ignoredups") | |
| 652 | |
| 653 tells Octave to avoid adding duplicate lines to the history list. | |
| 654 | |
| 655 ** Octave now uses the gnulib library for improved portability and to | |
| 656 avoid bugs in operating system functions. | |
| 657 | |
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658 ** Deprecated functions. |
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659 |
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660 The following functions were deprecated in Octave 3.0 and have been |
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661 removed from Octave 3.4. |
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662 |
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663 beta_cdf geometric_pdf pascal_pdf |
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664 beta_inv geometric_rnd pascal_rnd |
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665 beta_pdf hypergeometric_cdf poisson_cdf |
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666 beta_rnd hypergeometric_inv poisson_inv |
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667 binomial_cdf hypergeometric_pdf poisson_pdf |
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668 binomial_inv hypergeometric_rnd poisson_rnd |
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669 binomial_pdf intersection polyinteg |
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670 binomial_rnd is_bool setstr |
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671 chisquare_cdf is_complex struct_contains |
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672 chisquare_inv is_list struct_elements |
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673 chisquare_pdf is_matrix t_cdf |
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674 chisquare_rnd is_scalar t_inv |
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675 clearplot is_square t_pdf |
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676 clg is_stream t_rnd |
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677 com2str is_struct uniform_cdf |
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678 exponential_cdf is_symmetric uniform_inv |
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679 exponential_inv is_vector uniform_pdf |
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680 exponential_pdf isstr uniform_rnd |
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681 exponential_rnd lognormal_cdf weibcdf |
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682 f_cdf lognormal_inv weibinv |
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683 f_inv lognormal_pdf weibpdf |
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684 f_pdf lognormal_rnd weibrnd |
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685 f_rnd meshdom weibull_cdf |
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686 gamma_cdf normal_cdf weibull_inv |
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687 gamma_inv normal_inv weibull_pdf |
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688 gamma_pdf normal_pdf weibull_rnd |
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689 gamma_rnd normal_rnd wiener_rnd |
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690 geometric_cdf pascal_cdf |
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691 geometric_inv pascal_inv |
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692 |
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693 The following functions were deprecated in Octave 3.2 and will |
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694 be removed from Octave 3.6 (or whatever version is the second major |
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695 release after 3.2): |
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696 |
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697 create_set spcholinv splu |
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|
698 dmult spcumprod spmax |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
699 iscommand spcumsum spmin |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
700 israwcommand spdet spprod |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
701 lchol spdiag spqr |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
702 loadimage spfind spsum |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
703 mark_as_command sphcat spsumsq |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
704 mark_as_rawcommand spinv spvcat |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
705 spatan2 spkron str2mat |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
706 spchol splchol unmark_command |
|
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
707 spchol2inv split unmark_rawcommand |
|
11112
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
708 |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
709 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
|
710 be removed from Octave 3.8 (or whatever version is the second major |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
711 release after 3.4): |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
712 |
|
12723
6ed1e0be181e
doc: Update NEWS with new functions for release 3.4.1
Rik <octave@nomad.inbox5.com>
parents:
12713
diff
changeset
|
713 autocor cellidx gammai krylovb saveimage |
|
6ed1e0be181e
doc: Update NEWS with new functions for release 3.4.1
Rik <octave@nomad.inbox5.com>
parents:
12713
diff
changeset
|
714 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
changeset
|
715 betai fstat is_global replot values |
|
11112
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
716 |
|
7990
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
717 Summary of important user-visible changes for version 3.2: |
| 5913 | 718 --------------------------------------------------------- |
| 2452 | 719 |
| 8737 | 720 ** Compatibility with Matlab graphics has been improved. |
| 6329 | 721 |
|
8070
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
722 The hggroup object and associated listener callback functions have |
| 8737 | 723 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
|
724 have been added to these group objects such that |
|
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
725 |
|
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
726 x = 0:0.1:10; |
|
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
727 y = sin (x); |
|
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
728 plot (x, y, "ydatasource", "y"); |
|
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
729 for i = 1 : 100 |
|
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
730 pause(0.1) |
|
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
731 y = sin (x + 0.1 * i); |
| 14188 | 732 refreshdata (); |
|
8070
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
733 endfor |
|
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
734 |
| 8737 | 735 works as expected. This capability has be used to introduce |
|
9031
1052a66078cf
Documentation cleanup of top-level Octave directory (READMEs, INSTALL)
Rik <rdrider0-list@yahoo.com>
parents:
8932
diff
changeset
|
736 stem-series, bar-series, etc., objects for better Matlab |
| 8737 | 737 compatibility. |
| 738 | |
| 739 ** New graphics functions: | |
| 740 | |
|
11576
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
741 addlistener ezcontour gcbo refresh |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
742 addproperty ezcontourf ginput refreshdata |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
743 allchild ezmesh gtext specular |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
744 available_graphics_toolkits ezmeshc intwarning surfl |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
745 graphics_toolkit ezplot ishghandle trisurf |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
746 cla ezplot3 isocolors waitforbuttonpress |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
747 clabel ezpolar isonormals |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
748 comet ezsurf isosurface |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
749 dellistener findall linkprop |
|
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
750 diffuse gcbf plotmatrix |
|
8070
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
751 |
| 8737 | 752 ** New experimental OpenGL/FLTK based plotting system. |
| 753 | |
| 754 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
|
755 toolkit is now part of Octave. This graphics toolkit is disabled by |
| 8737 | 756 default. You can switch to using it with the command |
|
8070
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
757 |
|
11576
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
758 graphics_toolkit ("fltk") |
|
8070
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
759 |
|
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
760 for all future figures or for a particular figure with the command |
|
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
761 |
|
11576
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
parents:
11562
diff
changeset
|
762 graphics_toolkit (h, "fltk") |
|
8070
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
763 |
| 11139 | 764 where "h" is a valid figure handle. |
|
8070
3b53b25e2550
Add data sources and line series
David Bateman <dbateman@free.fr>
parents:
8014
diff
changeset
|
765 |
| 8737 | 766 ** Functions providing direct access to gnuplot have been removed. |
| 767 | |
|
7990
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
768 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
|
769 __gnuplot_show__, __gnuplot_replot__, __gnuplot_splot__, |
| 8737 | 770 __gnuplot_save_data__ and __gnuplot_send_inline_data__ have been |
| 771 removed from Octave. These function were incompatible with the | |
| 772 high level graphics handle code. | |
| 6329 | 773 |
| 8885 | 774 ** The Control, Finance and Quaternion functions have been removed. |
| 775 | |
| 776 These functions are now available as separate packages from | |
| 777 | |
| 778 http://octave.sourceforge.net/packages.html | |
| 779 | |
| 780 and can be reinstalled using the Octave package manager (see | |
| 781 the pkg function). | |
| 782 | |
| 783 ** Specific sparse matrix functions removed. | |
| 784 | |
| 785 The following functions, which handled only sparse matrices have | |
| 786 been removed. Instead of calling these functions directly, you | |
| 787 should use the corresponding function without the "sp" prefix. | |
| 8737 | 788 |
| 8885 | 789 spatan2 spcumsum spkron spprod |
| 790 spchol spdet splchol spqr | |
| 791 spchol2inv spdiag splu spsum | |
| 792 spcholinv spfind spmax spsumsqk | |
| 793 spcumprod spinv spmin | |
| 794 | |
| 795 ** Improvements to the debugger. | |
| 796 | |
| 797 The interactive debugging features have been improved. Stopping | |
| 798 on statements with dbstop should work correctly now. Stepping | |
| 799 into and over functions, and stepping one statement at a time | |
| 800 (with dbstep) now works. Moving up and down the call stack with | |
| 801 dbup and dbdown now works. The dbstack function is now available | |
| 802 to print the current function call stack. The new dbquit function | |
| 803 is available to exit the debugging mode. | |
| 804 | |
| 805 ** Improved traceback error messages. | |
| 806 | |
| 807 Traceback error messages are much more concise and easier to | |
| 808 understand. They now display information about the function call | |
| 809 stack instead of the stack of all statements that were active at | |
| 810 the point of the error. | |
|
8014
44d206ae68c9
improve fsolve compatibility
John W. Eaton <jwe@octave.org>
parents:
7990
diff
changeset
|
811 |
| 8737 | 812 ** Object Oriented Programming. |
|
8405
d79dfbff2f9d
document new norm features in NEWS
Jaroslav Hajek <highegg@gmail.com>
parents:
8396
diff
changeset
|
813 |
| 8737 | 814 Octave now includes OOP features and the user can create their own |
| 815 class objects and overloaded functions and operators. For | |
| 816 example, all methods of a class called "myclass" will be found in | |
| 817 a directory "@myclass" on the users path. The class specific | |
| 818 versions of functions and operators take precedence over the | |
| 819 generic versions of these functions. | |
| 820 | |
| 821 New functions related to OOP include | |
| 7189 | 822 |
| 8737 | 823 class inferiorto isobject loadobj methods superiorto |
| 824 | |
| 825 See the Octave manual for more details. | |
| 7038 | 826 |
| 8747 | 827 ** Parsing of Command-style Functions. |
| 828 | |
| 829 Octave now parses command-style functions without needing to first | |
| 830 declare them with "mark_as_command". The rules for recognizing a | |
| 831 command-style function calls are | |
| 832 | |
| 833 * A command must appear as the first word in a statement, | |
| 834 followed by a space. | |
| 835 | |
| 836 * The first character after the space must not be '=' or '(' | |
| 837 | |
| 838 * The next token after the space must not look like a binary | |
| 839 operator. | |
| 840 | |
| 841 These rules should be mostly compatible with the way Matlab parses | |
| 842 command-style function calls and allow users to define commands in | |
| 843 .m files without having to mark them as commands. | |
| 844 | |
| 845 Note that previous versions of Octave allowed expressions like | |
| 846 | |
| 847 x = load -text foo.dat | |
| 848 | |
| 849 but an expression like this will now generate a parse error. In | |
| 850 order to assign the value returned by a function to a variable, | |
| 851 you must use the normal function call syntax: | |
| 852 | |
| 853 x = load ("-text", "foo.dat"); | |
| 854 | |
| 8737 | 855 ** Block comments. |
| 856 | |
| 8747 | 857 Commented code can be between matching "#{" and "#}" or "%{" and |
| 858 "%}" markers, even if the commented code spans several line. This | |
| 859 allows blocks code to be commented, without needing to comment | |
| 860 each line. For example, | |
| 5814 | 861 |
| 8747 | 862 function [s, t] = func (x, y) |
| 863 s = 2 * x; | |
| 864 #{ | |
| 865 s *= y; | |
| 866 t = y + x; | |
| 867 #} | |
|
7990
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
868 endfunction |
| 5814 | 869 |
| 8747 | 870 the lines "s *= y;" and "t = y + x" will not be executed. |
| 8737 | 871 |
|
12400
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
872 ** If any subfunction in a file ends with "end" or "endfunction", then |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
873 they all must end that way. Previously, Octave accepted |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
874 |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
875 function main () |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
876 ... |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
877 # 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
|
878 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
|
879 ... |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
880 endfunction |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
881 |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
882 but this is no longer allowed. |
|
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
12224
diff
changeset
|
883 |
| 8737 | 884 ** Special treatment in the parser of expressions like "a' * b". |
| 2452 | 885 |
| 8737 | 886 In these cases the transpose is no longer explicitly formed and |
| 887 BLAS libraries are called with the transpose flagged, | |
| 888 significantly improving performance for these kinds of | |
| 889 operations. | |
|
8417
654bcfb937bf
Add the eigs and svds functions
David Bateman <dbateman@free.fr>
parents:
8405
diff
changeset
|
890 |
| 8737 | 891 ** Single Precision data type. |
| 2452 | 892 |
| 8737 | 893 Octave now includes a single precision data type. Single |
| 894 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
|
895 from functions like ones, eye, etc. For example, |
| 5995 | 896 |
| 8737 | 897 single (1) |
| 898 ones (2, 2, "single") | |
| 899 zeros (2, 2, "single") | |
| 900 eye (2, 2, "single") | |
| 901 Inf (2, 2, "single") | |
| 902 NaN (2, 2, "single") | |
| 903 NA (2, 2, "single") | |
| 7279 | 904 |
| 8737 | 905 all create single precision variables. For compatibility with |
| 906 Matlab, mixed double/single precision operators and functions | |
| 907 return single precision types. | |
| 908 | |
| 909 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
|
910 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
|
911 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
|
912 visa-versa are warned that compatibility might not be assured. |
| 7279 | 913 |
| 8737 | 914 ** Improved array indexing. |
| 915 | |
| 916 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
|
917 completely rewritten and indexing is now significantly faster. |
| 8737 | 918 |
| 8755 | 919 ** Improved memory management. |
| 920 | |
| 921 Octave will now attempt to share data in some cases where previously | |
| 922 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
|
923 conversions between cells, structs and cs-lists. This usually reduces |
| 8755 | 924 both time and memory consumption. |
| 9128 | 925 Also, Octave will now attempt to detect and optimize usage of a vector |
| 926 as a stack, when elements are being repeatedly inserted at/removed from | |
| 927 the end of the vector. | |
| 8755 | 928 |
| 8738 | 929 ** Improved performance for reduction operations. |
| 930 | |
| 8755 | 931 The performance of the sum, prod, sumsq, cumsum, cumprod, any, all, |
| 932 max and min functions has been significantly improved. | |
| 8738 | 933 |
| 9006 | 934 ** Sorting and searching. |
| 935 | |
| 936 The performance of sort has been improved, especially when sorting | |
| 10453 | 937 indices are requested. An efficient built-in issorted |
| 938 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
|
939 efficient algorithm, especially in the homogeneous case. The lookup |
| 10453 | 940 function is now a built-in function performing a binary search, |
| 941 optimized for long runs of close elements. Lookup also works with | |
| 942 cell arrays of strings. | |
| 9006 | 943 |
| 944 ** Range arithmetics | |
| 945 | |
| 10453 | 946 For some operations on ranges, Octave will attempt to keep the |
| 947 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
diff
changeset
|
948 subtracting a scalar, and multiplying by a scalar. Ranges with zero |
| 10453 | 949 increment are allowed and can be constructed using the built-in |
| 950 function `ones'. | |
| 9006 | 951 |
| 952 ** Various performance improvements. | |
| 953 | |
| 10453 | 954 Performance of a number of other built-in operations and functions |
| 955 was improved, including: | |
| 9006 | 956 |
| 957 * logical operations | |
| 958 * comparison operators | |
| 959 * element-wise power | |
| 960 * accumarray | |
| 961 * cellfun | |
| 962 * isnan | |
| 963 * isinf | |
| 964 * isfinite | |
| 965 * nchoosek | |
| 966 * repmat | |
| 967 * strcmp | |
| 968 | |
| 8737 | 969 ** 64-bit integer arithmetic. |
| 970 | |
| 971 Arithmetic with 64-bit integers (int64 and uint64 types) is fully | |
| 972 supported, with saturation semantics like the other integer types. | |
| 973 Performance of most integer arithmetic operations has been | |
| 974 improved by using integer arithmetic directly. Previously, Octave | |
| 975 performed integer math with saturation semantics by converting the | |
| 976 operands to double precision, performing the operation, and then | |
| 977 converting the result back to an integer value, truncating if | |
| 978 necessary. | |
| 979 | |
| 8885 | 980 ** Diagonal and permutation matrices. |
| 981 | |
| 982 The interpreter can now treat diagonal and permutation matrices as | |
| 983 special objects that store only the non-zero elements, rather than | |
| 984 general full matrices. Therefore, it is now possible to construct | |
| 985 and use these matrices in linear algebra without suffering a | |
| 986 performance penalty due to storing large numbers of zero elements. | |
| 987 | |
| 988 ** Improvements to fsolve. | |
| 989 | |
| 990 The fsolve function now accepts an option structure argument (see | |
| 991 also the optimset function). The INFO values returned from fsolve | |
| 992 have changed to be compatible with Matlab's fsolve function. | |
| 993 Additionally, fsolve is now able to solve overdetermined systems, | |
| 994 complex-differentiable complex systems, systems with a sparse | |
| 995 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>
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|
996 inputs. It can also be called recursively. |
| 8885 | 997 |
| 8737 | 998 ** Improvements to the norm function. |
| 999 | |
| 1000 The norm function is now able to compute row or column norms of a | |
| 1001 matrix in a single call, as well as general matrix p-norms. | |
| 1002 | |
| 1003 ** New functions for computing some eigenvalues or singular values. | |
| 1004 | |
| 1005 The eigs and svds functions have been included in Octave. These | |
| 1006 functions require the ARPACK library (now distributed under a | |
| 1007 GPL-compatible license). | |
| 1008 | |
| 1009 ** New QR and Cholesky factorization updating functions. | |
|
8370
34960ba08a81
document more new features in the NEWS file
Jaroslav Hajek <highegg@gmail.com>
parents:
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|
1010 |
| 8737 | 1011 choldelete cholshift qrdelete qrshift |
| 1012 cholinsert cholupdate qrinsert qrupdate | |
| 1013 | |
| 1014 ** New quadrature functions. | |
| 1015 | |
| 1016 dblquad quadgk quadv triplequad | |
| 1017 | |
| 8885 | 1018 ** New functions for reading and writing images. |
| 1019 | |
| 1020 The imwrite and imread functions have been included in Octave. | |
| 1021 These functions require the GraphicsMagick library. The new | |
| 1022 function imfinfo provides information about an image file (size, | |
| 1023 type, colors, etc.) | |
| 1024 | |
|
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1025 ** The input_event_hook function has been replaced by the pair of |
|
1500d0197484
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|
1026 functions add_input_event_hook and remove_input_event_hook so that |
|
1500d0197484
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|
1027 more than one hook function may be installed at a time. |
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|
1028 |
| 8737 | 1029 ** Other miscellaneous new functions. |
|
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|
1030 |
|
8932
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|
1031 addtodate hypot reallog |
|
2d0f8692a82e
Add the 'histc' function
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changeset
|
1032 bicgstab idivide realpow |
| 9006 | 1033 cellslices info realsqrt |
| 1034 cgs interp1q rectint | |
| 1035 command_line_path isdebugmode regexptranslate | |
| 1036 contrast isfloat restoredefaultpath | |
| 1037 convn isstrprop roundb | |
| 1038 cummin log1p rundemos | |
| 1039 cummax lsqnonneg runlength | |
| 1040 datetick matlabroot saveobj | |
| 1041 display namelengthmax spaugment | |
| 1042 expm1 nargoutchk strchr | |
| 1043 filemarker pathdef strvcat | |
| 1044 fstat perl subspace | |
| 1045 full prctile symvar | |
| 1046 fzero quantile treelayout | |
| 1047 genvarname re_read_readline_init_file validatestring | |
| 1048 histc | |
|
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|
1049 |
| 8885 | 1050 ** Changes to strcat. |
| 1051 | |
| 1052 The strcat function is now compatible with Matlab's strcat | |
| 1053 function, which removes trailing whitespace when concatenating | |
| 1054 character strings. For example | |
| 1055 | |
| 1056 strcat ('foo ', 'bar') | |
| 1057 ==> 'foobar' | |
| 1058 | |
| 1059 The new function cstrcat provides the previous behavior of | |
| 1060 Octave's strcat. | |
| 1061 | |
| 1062 ** Improvements to the help functions. | |
| 1063 | |
|
9034
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|
1064 The help system has been mostly re-implemented in .m files to make |
| 8885 | 1065 it easier to modify. Performance of the lookfor function has been |
| 1066 greatly improved by caching the help text from all functions that | |
| 1067 are distributed with Octave. The pkg function has been modified | |
| 1068 to generate cache files for external packages when they are | |
| 1069 installed. | |
| 1070 | |
|
8888
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|
1071 ** Deprecated functions. |
|
0c7b0049c023
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1072 |
|
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|
1073 The following functions were deprecated in Octave 3.0 and will be |
|
11112
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|
1074 removed from Octave 3.4 (or whatever version is the second major |
|
8888
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|
1075 release after 3.0): |
|
0c7b0049c023
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|
1076 |
|
11112
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|
1077 beta_cdf geometric_pdf pascal_pdf |
|
8ea4cf59c41b
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|
1078 beta_inv geometric_rnd pascal_rnd |
|
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list deprecated and removed functions in NEWS file
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|
1079 beta_pdf hypergeometric_cdf poisson_cdf |
|
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|
1080 beta_rnd hypergeometric_inv poisson_inv |
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|
1081 binomial_cdf hypergeometric_pdf poisson_pdf |
|
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|
1082 binomial_inv hypergeometric_rnd poisson_rnd |
|
8ea4cf59c41b
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|
1083 binomial_pdf intersection polyinteg |
|
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|
1084 binomial_rnd is_bool setstr |
|
8ea4cf59c41b
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|
1085 chisquare_cdf is_complex struct_contains |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
1086 chisquare_inv is_list struct_elements |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
1087 chisquare_pdf is_matrix t_cdf |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
1088 chisquare_rnd is_scalar t_inv |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
1089 clearplot is_square t_pdf |
|
8ea4cf59c41b
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|
1090 clg is_stream t_rnd |
|
8ea4cf59c41b
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|
1091 com2str is_struct uniform_cdf |
|
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|
1092 exponential_cdf is_symmetric uniform_inv |
|
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|
1093 exponential_inv is_vector uniform_pdf |
|
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|
1094 exponential_pdf isstr uniform_rnd |
|
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|
1095 exponential_rnd lognormal_cdf weibcdf |
|
8ea4cf59c41b
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|
1096 f_cdf lognormal_inv weibinv |
|
8ea4cf59c41b
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|
1097 f_inv lognormal_pdf weibpdf |
|
8ea4cf59c41b
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|
1098 f_pdf lognormal_rnd weibrnd |
|
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|
1099 f_rnd meshdom weibull_cdf |
|
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1100 gamma_cdf normal_cdf weibull_inv |
|
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1101 gamma_inv normal_inv weibull_pdf |
|
8ea4cf59c41b
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|
1102 gamma_pdf normal_pdf weibull_rnd |
|
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
1103 gamma_rnd normal_rnd wiener_rnd |
|
8888
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1104 geometric_cdf pascal_cdf |
|
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|
1105 geometric_inv pascal_inv |
|
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1106 |
|
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|
1107 The following functions are now deprecated in Octave 3.2 and will |
|
11112
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|
1108 be removed from Octave 3.6 (or whatever version is the second major |
|
8888
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|
1109 release after 3.2): |
|
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1110 |
|
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1111 create_set spcholinv spmax |
|
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|
1112 dmult spcumprod spmin |
|
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1113 iscommand spcumsum spprod |
|
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|
1114 israwcommand spdet spqr |
|
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|
1115 lchol spdiag spsum |
|
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|
1116 loadimage spfind spsumsq |
|
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|
1117 mark_as_command spinv str2mat |
|
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1118 mark_as_rawcommand spkron unmark_command |
|
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|
1119 spatan2 splchol unmark_rawcommand |
|
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|
1120 spchol split |
|
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|
1121 spchol2inv splu |
|
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|
1122 |
|
7990
86dae6e5b83c
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David Bateman <dbateman@free.fr>
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|
1123 See NEWS.3 for old news. |