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comparison pages/NEWS-2.md @ 215:dedb85c54245
Reorganize homepage.
| author | Kai T. Ohlhus <k.ohlhus@gmail.com> |
|---|---|
| date | Thu, 10 Sep 2020 17:47:36 +0900 |
| parents | |
| children | c8126c010d67 |
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| 1 --- | |
| 2 layout: page | |
| 3 title: GNU Octave Version 2 | |
| 4 menu: false | |
| 5 permalink: NEWS-2.html | |
| 6 --- | |
| 7 | |
| 8 ## Summary of important user-visible changes | |
| 9 | |
| 10 {% include release_news_select.md %} | |
| 11 | |
| 12 <h2>Summary of changes for version 2.0.17</h2> | |
| 13 | |
| 14 <p>This will probably be the last release in the 2.0.x series. There are | |
| 15 a few bug fixes, but the major change is to print a message saying | |
| 16 that Octave 2.0.x cannot be compiled with gcc 3.0.x or gcc 2.96. If | |
| 17 you want to build Octave 2.0.x, you will need to use gcc 2.95.x. If | |
| 18 you want to use gcc 3.0.x or some later version, you should be using | |
| 19 the Octave 2.1.35 sources or a more recent version.</p> | |
| 20 | |
| 21 <h2>Summary of changes for version 2.0.16</h2> | |
| 22 | |
| 23 <p>This is primarily a bug-fixing release.</p> | |
| 24 | |
| 25 <h2>Summary of changes for version 2.0.15</h2> | |
| 26 | |
| 27 <p>This is primarily a bug-fixing release.</p> | |
| 28 | |
| 29 <ul> | |
| 30 <li>If you are using GNU Emacs 19.34 or earlier, you will need to add | |
| 31 the following code to your ~/.emacs file in order to use Emacs | |
| 32 Octave mode: | |
| 33 <pre> | |
| 34 ;; Set up the custom library. | |
| 35 ;; taken from http://www.dina.kvl.dk/~abraham/custom/ | |
| 36 (eval-and-compile | |
| 37 (condition-case () | |
| 38 (require 'custom) | |
| 39 (error nil)) | |
| 40 (if (and (featurep 'custom) (fboundp 'custom-declare-variable)) | |
| 41 nil ;; We've got what we needed | |
| 42 ;; We have the old custom-library, hack around it! | |
| 43 (defmacro defgroup (&rest args) | |
| 44 nil) | |
| 45 (defmacro defcustom (var value doc &rest args) | |
| 46 (` (defvar (, var) (, value) (, doc)))))) | |
| 47 </pre></li> | |
| 48 </ul> | |
| 49 | |
| 50 <h2>Summary of changes for version 2.0.14</h2> | |
| 51 | |
| 52 This release fixes numerous bugs and adds the following new features: | |
| 53 | |
| 54 <ul> | |
| 55 <li>argv is now padded with blanks instead of ASCII NUL.</li> | |
| 56 | |
| 57 <li>New functions: | |
| 58 <dl> | |
| 59 <dt><b>besselh</b></dt> | |
| 60 Hankel functions of the first and second kind | |
| 61 <dt><b>airy</b></dt> | |
| 62 Airy functions of the first and second kind, and | |
| 63 their derivatives | |
| 64 </dl></li> | |
| 65 | |
| 66 <li>The Bessel functions now accept complex values for the argument | |
| 67 and any real value for the order.</li> | |
| 68 | |
| 69 <li>The value of LOADPATH set by the environment variable | |
| 70 OCTAVE_PATH, the -p or --path command line options, or on the | |
| 71 command line is no longer modified to include the default path. | |
| 72 Instead it is left as specified. Its default value is now ":", | |
| 73 which tells Octave to search the default path, and the new | |
| 74 built-in variable DEFAULT_LOADPATH contains the default list of | |
| 75 directories to search. </li> | |
| 76 | |
| 77 <li>The function file_in_path no longer does any special processing of | |
| 78 its PATH argument. To search LOADPATH for files, it is now | |
| 79 generally better to use the new function file_in_loadpath.</li> | |
| 80 | |
| 81 <li>If fread is given a skip parameter, the skip is performed after | |
| 82 the read instead of before (for compatibility with Matlab).</li> | |
| 83 | |
| 84 <li>The new built-in variable `crash_dumps_octave_core' controls | |
| 85 whether Octave writes user variables to the file `octave-core' | |
| 86 when it crashes or is killed by a signal. The default value is 1 | |
| 87 (0 if you use --traditional).</li> | |
| 88 | |
| 89 <li>If LOADPATH contains a doubled colon, the default path is inserted | |
| 90 in its place. This is similar to the substitution that also takes | |
| 91 place for leading or trailing colons in the LOADPATH.</li> | |
| 92 | |
| 93 <li>Loops of the form `for i = STRING ... endfor' are now allowed.</li> | |
| 94 | |
| 95 <li>It is now possible to set the iteration limit for lsode using | |
| 96 lsode_options ("step limit", N).</li> | |
| 97 | |
| 98 <li>New functions: | |
| 99 <dl> | |
| 100 <dt><b>is_complex</b></dt> | |
| 101 tell whether a value is complex | |
| 102 <dt><b>isnumeric</b></dt> | |
| 103 tell whether a value is a numeric object | |
| 104 <dt><b>isfinite</b></dt> | |
| 105 find finite elements of a matrix object | |
| 106 <dt><b>rehash</b></dt> | |
| 107 re-initialize the cache of directories in LOADPATH | |
| 108 <dt><b>graw</b></dt> | |
| 109 send a string to the gnuplot subprocess | |
| 110 </dl></li> | |
| 111 | |
| 112 <li>New functions from Kurt Hornik's Octave-ci package: | |
| 113 <ul> | |
| 114 <li>In finance (new directory): | |
| 115 <dl> | |
| 116 <dt><b>fv</b></dt> | |
| 117 <dd>future value of an investment</dd> | |
| 118 <dt><b>fvl</b></dt> | |
| 119 <dd>future value of an initial lump sum investment</dd> | |
| 120 <dt><b>irr</b></dt> | |
| 121 <dd>internal rate of return of an investment</dd> | |
| 122 <dt><b>nper</b></dt> | |
| 123 <dd>number of payments needed for amortizing a loan</dd> | |
| 124 <dt><b>npv</b></dt> | |
| 125 <dd>net present value of a series of payments</dd> | |
| 126 <dt><b>pmt</b></dt> | |
| 127 <dd>amount of periodic payment needed to amortize a loan</dd> | |
| 128 <dt><b>pv</b></dt> | |
| 129 <dd>present value of an investment</dd> | |
| 130 <dt><b>pvl</b></dt> | |
| 131 <dd>present value of an investment that pays off at the end</dd> | |
| 132 <dt><b>rate</b></dt> | |
| 133 <dd>rate of return of an investment</dd> | |
| 134 <dt><b>vol</b></dt> | |
| 135 <dd>volatility of financial time series data</dd> | |
| 136 </dl></li> | |
| 137 | |
| 138 <li>In linear-algebra: | |
| 139 <dl> | |
| 140 <dt><b>dmult</b></dt> | |
| 141 <dd>rescale the rows of a matrix</dd> | |
| 142 </dl></li> | |
| 143 | |
| 144 <li>In signal: | |
| 145 <dl> | |
| 146 <dt><b>arch_fit</b></dt> | |
| 147 <dd>fit an ARCH regression model</dd> | |
| 148 <dt><b>arch_rnd</b></dt> | |
| 149 <dd>simulate an ARCH process</dd> | |
| 150 <dt><b>arch_test</b></dt> | |
| 151 <dd>test for conditional heteroscedascity</dd> | |
| 152 <dt><b>arma_rnd</b></dt> | |
| 153 <dd>simulate an ARMA process</dd> | |
| 154 <dt><b>autocor</b></dt> | |
| 155 <dd>compute autocorrelations</dd> | |
| 156 <dt><b>autocov</b></dt> | |
| 157 <dd>compute autocovariances</dd> | |
| 158 <dt><b>autoreg_matrix</b></dt> | |
| 159 <dd>design matrix for autoregressions</dd> | |
| 160 <dt><b>bartlett</b></dt> | |
| 161 <dd>coefficients of the Bartlett (triangular) window</dd> | |
| 162 <dt><b>blackman</b></dt> | |
| 163 <dd>coefficients of the Blackman window</dd> | |
| 164 <dt><b>diffpara</b></dt> | |
| 165 <dd>estimate the fractional differencing parameter</dd> | |
| 166 <dt><b>durbinlevinson</b></dt> | |
| 167 <dd>perform one step of the Durbin-Levinson algorithm</dd> | |
| 168 <dt><b>fractdiff</b></dt> | |
| 169 <dd>compute fractional differences</dd> | |
| 170 <dt><b>hamming</b></dt> | |
| 171 <dd>coefficients of the Hamming window</dd> | |
| 172 <dt><b>hanning</b></dt> | |
| 173 <dd>coefficients of the Hanning window</dd> | |
| 174 <dt><b>hurst</b></dt> | |
| 175 <dd>estimate the Hurst parameter</dd> | |
| 176 <dt><b>periodogram</b></dt> | |
| 177 <dd>compute the periodogram</dd> | |
| 178 <dt><b>rectangle_lw</b></dt> | |
| 179 <dd>rectangular lag window</dd> | |
| 180 <dt><b>rectangle_sw</b></dt> | |
| 181 <dd>rectangular spectral window</dd> | |
| 182 <dt><b>sinetone</b></dt> | |
| 183 <dd>compute a sine tone</dd> | |
| 184 <dt><b>sinewave</b></dt> | |
| 185 <dd>compute a sine wave</dd> | |
| 186 <dt><b>spectral_adf</b></dt> | |
| 187 <dd>spectral density estimation</dd> | |
| 188 <dt><b>spectral_xdf</b></dt> | |
| 189 <dd>spectral density estimation</dd> | |
| 190 <dt><b>spencer</b></dt> | |
| 191 <dd>apply Spencer's 15-point MA filter</dd> | |
| 192 <dt><b>stft</b></dt> | |
| 193 <dd>short-term Fourier transform</dd> | |
| 194 <dt><b>synthesis</b></dt> | |
| 195 <dd>recover a signal from its short-term Fourier transform</dd> | |
| 196 <dt><b>triangle_lw</b></dt> | |
| 197 <dd>triangular lag window</dd> | |
| 198 <dt><b>triangle_sw</b></dt> | |
| 199 <dd>triangular spectral window</dd> | |
| 200 <dt><b>yulewalker</b></dt> | |
| 201 <dd>fit AR model by Yule-Walker method</dd> | |
| 202 </dl></li> | |
| 203 | |
| 204 <li>In statistics/base (new directory): | |
| 205 <dl> | |
| 206 <dt><b>center</b></dt> | |
| 207 <dd>center by subtracting means</dd> | |
| 208 <dt><b>cloglog</b></dt> | |
| 209 <dd>complementary log-log function</dd> | |
| 210 <dt><b>cor</b></dt> | |
| 211 <dd>compute correlations</dd> | |
| 212 <dt><b>cov</b></dt> | |
| 213 <dd>compute covariances</dd> | |
| 214 <dt><b>cut</b></dt> | |
| 215 <dd>cut data into intervals</dd> | |
| 216 <dt><b>iqr</b></dt> | |
| 217 <dd>interquartile range</dd> | |
| 218 <dt><b>kendall</b></dt> | |
| 219 <dd>kendall's rank correlation tau</dd> | |
| 220 <dt><b>logit</b></dt> | |
| 221 <dd>logit transformation</dd> | |
| 222 <dt><b>mean</b></dt> | |
| 223 <dd>compute arithmetic, geometric, and harmonic mean</dd> | |
| 224 <dt><b>meansq</b></dt> | |
| 225 <dd>compute mean square</dd> | |
| 226 <dt><b>moment</b></dt> | |
| 227 <dd>compute moments</dd> | |
| 228 <dt><b>ppplot</b></dt> | |
| 229 <dd>perform a PP-plot (probability plot)</dd> | |
| 230 <dt><b>probit</b></dt> | |
| 231 <dd>probit transformation</dd> | |
| 232 <dt><b>qqplot</b></dt> | |
| 233 <dd>perform a QQ-plot (quantile plot)</dd> | |
| 234 <dt><b>range</b></dt> | |
| 235 <dd>compute range</dd> | |
| 236 <dt><b>ranks</b></dt> | |
| 237 <dd>compute ranks</dd> | |
| 238 <dt><b>run_count</b></dt> | |
| 239 <dd>count upward runs</dd> | |
| 240 <dt><b>spearman</b></dt> | |
| 241 <dd>spearman's rank correlation rho</dd> | |
| 242 <dt><b>statistics</b></dt> | |
| 243 <dd>compute basic statistics</dd> | |
| 244 <dt><b>studentize</b></dt> | |
| 245 <dd>subtract mean and divide by standard deviation</dd> | |
| 246 <dt><b>table</b></dt> | |
| 247 <dd>cross tabulation</dd> | |
| 248 <dt><b>values</b></dt> | |
| 249 <dd>extract unique elements</dd> | |
| 250 <dt><b>var</b></dt> | |
| 251 <dd>compute variance</dd> | |
| 252 </dl></li> | |
| 253 | |
| 254 <li>In statistics/distributions (new directory): | |
| 255 <dl> | |
| 256 <dt><b>beta_cdf</b></dt> | |
| 257 <dd>CDF of the Beta distribution</dd> | |
| 258 <dt><b>beta_inv</b></dt> | |
| 259 <dd>Quantile function of the Beta distribution</dd> | |
| 260 <dt><b>beta_pdf</b></dt> | |
| 261 <dd>PDF of the Beta distribution</dd> | |
| 262 <dt><b>beta_rnd</b></dt> | |
| 263 <dd>Random deviates from the Beta distribution | |
| 264 </dd> | |
| 265 <dt><b>binomial_cdf</b></dt> | |
| 266 <dd>CDF of the binomial distribution</dd> | |
| 267 <dt><b>binomial_inv</b></dt> | |
| 268 <dd>Quantile function of the binomial distribution</dd> | |
| 269 <dt><b>binomial_pdf</b></dt> | |
| 270 <dd>PDF of the binomial distribution</dd> | |
| 271 <dt><b>binomial_rnd</b></dt> | |
| 272 <dd>Random deviates from the binomial distribution | |
| 273 </dd> | |
| 274 <dt><b>cauchy_cdf</b></dt> | |
| 275 <dd>CDF of the Cauchy distribution</dd> | |
| 276 <dt><b>cauchy_inv</b></dt> | |
| 277 <dd>Quantile function of the Cauchy distribution</dd> | |
| 278 <dt><b>cauchy_pdf</b></dt> | |
| 279 <dd>PDF of the Cauchy distribution</dd> | |
| 280 <dt><b>cauchy_rnd</b></dt> | |
| 281 <dd>Random deviates from the Cauchy distribution | |
| 282 </dd> | |
| 283 <dt><b>chisquare_cdf</b></dt> | |
| 284 <dd>CDF of the chi-square distribution</dd> | |
| 285 <dt><b>chisquare_inv</b></dt> | |
| 286 <dd>Quantile function of the chi-square distribution</dd> | |
| 287 <dt><b>chisquare_pdf</b></dt> | |
| 288 <dd>PDF of the chi-sqaure distribution</dd> | |
| 289 <dt><b>chisquare_rnd</b></dt> | |
| 290 <dd>Random deviates from the chi-square distribution | |
| 291 </dd> | |
| 292 <dt><b>discrete_cdf</b></dt> | |
| 293 <dd>CDF of a discrete distribution</dd> | |
| 294 <dt><b>discrete_inv</b></dt> | |
| 295 <dd>Quantile function of a discrete distribution</dd> | |
| 296 <dt><b>discrete_pdf</b></dt> | |
| 297 <dd>PDF of a discrete distribution</dd> | |
| 298 <dt><b>discrete_rnd</b></dt> | |
| 299 <dd>Random deviates from a discrete distribution | |
| 300 </dd> | |
| 301 <dt><b>empirical_cdf</b></dt> | |
| 302 <dd>CDF of the empirical distribution</dd> | |
| 303 <dt><b>empirical_inv</b></dt> | |
| 304 <dd>Quantile function of the empirical distribution</dd> | |
| 305 <dt><b>empirical_pdf</b></dt> | |
| 306 <dd>PDF of the empirical distribution</dd> | |
| 307 <dt><b>empirical_rnd</b></dt> | |
| 308 <dd>Bootstrap samples from the empirical distribution | |
| 309 </dd> | |
| 310 <dt><b>exponential_cdf</b></dt> | |
| 311 <dd>CDF of the exponential distribution</dd> | |
| 312 <dt><b>exponential_inv</b></dt> | |
| 313 <dd>Quantile function of the exponential distribution</dd> | |
| 314 <dt><b>exponential_pdf</b></dt> | |
| 315 <dd>PDF of the exponential distribution</dd> | |
| 316 <dt><b>exponential_rnd</b></dt> | |
| 317 <dd>Random deviates from the exponential distribution | |
| 318 </dd> | |
| 319 <dt><b>f_cdf</b></dt> | |
| 320 <dd>CDF of the F distribution</dd> | |
| 321 <dt><b>f_inv</b></dt> | |
| 322 <dd>Quantile function of the F distribution</dd> | |
| 323 <dt><b>f_pdf</b></dt> | |
| 324 <dd>PDF of the F distribution</dd> | |
| 325 <dt><b>f_rnd</b></dt> | |
| 326 <dd>Random deviates from the F distribution | |
| 327 </dd> | |
| 328 <dt><b>gamma_cdf</b></dt> | |
| 329 <dd>CDF of the Gamma distribution</dd> | |
| 330 <dt><b>gamma_inv</b></dt> | |
| 331 <dd>Quantile function of the Gamma distribution</dd> | |
| 332 <dt><b>gamma_pdf</b></dt> | |
| 333 <dd>PDF of the Gamma distribution</dd> | |
| 334 <dt><b>gamma_rnd</b></dt> | |
| 335 <dd>Random deviates from the Gamma distribution | |
| 336 </dd> | |
| 337 <dt><b>geometric_cdf</b></dt> | |
| 338 <dd>CDF of the geometric distribution</dd> | |
| 339 <dt><b>geometric_inv</b></dt> | |
| 340 <dd>Quantile function of the geometric distribution</dd> | |
| 341 <dt><b>geometric_pdf</b></dt> | |
| 342 <dd>PDF of the geometric distribution</dd> | |
| 343 <dt><b>geometric_rnd</b></dt> | |
| 344 <dd>Random deviates from the geometric distribution | |
| 345 </dd> | |
| 346 <dt><b>hypergeometric_cdf</b></dt> | |
| 347 <dd>CDF of the hypergeometric distribution</dd> | |
| 348 <dt><b>hypergeometric_inv</b></dt> | |
| 349 <dd>Random deviates from hypergeometric distribution</dd> | |
| 350 <dt><b>hypergeometric_pdf</b></dt> | |
| 351 <dd>PDF of the hypergeometric distribution</dd> | |
| 352 <dt><b>hypergeometric_rnd</b></dt> | |
| 353 <dd>Random deviates from hypergeometric distribution | |
| 354 </dd> | |
| 355 <dt><b>kolmogorov_smirnov_cdf</b></dt> | |
| 356 <dd>CDF of the Kolmogorov-Smirnov distribution | |
| 357 </dd> | |
| 358 <dt><b>laplace_cdf</b></dt> | |
| 359 <dd>CDF of the Laplace distribution</dd> | |
| 360 <dt><b>laplace_inv</b></dt> | |
| 361 <dd>Quantile function of the Laplace distribution</dd> | |
| 362 <dt><b>laplace_pdf</b></dt> | |
| 363 <dd>PDF of the Laplace distribution</dd> | |
| 364 <dt><b>laplace_rnd</b></dt> | |
| 365 <dd>Random deviates from the Laplace distribution | |
| 366 </dd> | |
| 367 <dt><b>logistic_cdf</b></dt> | |
| 368 <dd>CDF of the logistic distribution</dd> | |
| 369 <dt><b>logistic_inv</b></dt> | |
| 370 <dd>Quantile function of the logistic distribution</dd> | |
| 371 <dt><b>logistic_pdf</b></dt> | |
| 372 <dd>PDF of the logistic distribution</dd> | |
| 373 <dt><b>logistic_rnd</b></dt> | |
| 374 <dd>Random deviates from the logistic distribution | |
| 375 </dd> | |
| 376 <dt><b>lognormal_cdf</b></dt> | |
| 377 <dd>CDF of the log normal distribution</dd> | |
| 378 <dt><b>lognormal_inv</b></dt> | |
| 379 <dd>Quantile function of the log normal distribution</dd> | |
| 380 <dt><b>lognormal_pdf</b></dt> | |
| 381 <dd>PDF of the log normal distribution</dd> | |
| 382 <dt><b>lognormal_rnd</b></dt> | |
| 383 <dd>Random deviates from the log normal distribution | |
| 384 </dd> | |
| 385 <dt><b>normal_cdf</b></dt> | |
| 386 <dd>CDF of the normal distribution</dd> | |
| 387 <dt><b>normal_inv</b></dt> | |
| 388 <dd>Quantile function of the normal distribution</dd> | |
| 389 <dt><b>normal_pdf</b></dt> | |
| 390 <dd>PDF of the normal distribution</dd> | |
| 391 <dt><b>normal_rnd</b></dt> | |
| 392 <dd>Random deviates from the normal distribution | |
| 393 </dd> | |
| 394 <dt><b>pascal_cdf</b></dt> | |
| 395 <dd>CDF of the Pascal (negative binomial) distribution</dd> | |
| 396 <dt><b>pascal_inv</b></dt> | |
| 397 <dd>Quantile function of the Pascal distribution</dd> | |
| 398 <dt><b>pascal_pdf</b></dt> | |
| 399 <dd>PDF of the Pascal (negative binomial) distribution</dd> | |
| 400 <dt><b>pascal_rnd</b></dt> | |
| 401 <dd>Random deviates from the Pascal distribution | |
| 402 </dd> | |
| 403 <dt><b>poisson_cdf</b></dt> | |
| 404 <dd>CDF of the Poisson distribution</dd> | |
| 405 <dt><b>poisson_inv</b></dt> | |
| 406 <dd>Quantile function of the Poisson distribution</dd> | |
| 407 <dt><b>poisson_pdf</b></dt> | |
| 408 <dd>PDF of the Poisson distribution</dd> | |
| 409 <dt><b>poisson_rnd</b></dt> | |
| 410 <dd>Random deviates from the Poisson distribution | |
| 411 </dd> | |
| 412 <dt><b>stdnormal_cdf</b></dt> | |
| 413 <dd>CDF of the standard normal distribution</dd> | |
| 414 <dt><b>stdnormal_inv</b></dt> | |
| 415 <dd>Quantile function of standard normal distribution</dd> | |
| 416 <dt><b>stdnormal_pdf</b></dt> | |
| 417 <dd>PDF of the standard normal distribution</dd> | |
| 418 <dt><b>stdnormal_rnd</b></dt> | |
| 419 <dd>Random deviates from standard normal distribution | |
| 420 </dd> | |
| 421 <dt><b>t_cdf</b></dt> | |
| 422 <dd>CDF of the t distribution</dd> | |
| 423 <dt><b>t_inv</b></dt> | |
| 424 <dd>Quantile function of the t distribution</dd> | |
| 425 <dt><b>t_pdf</b></dt> | |
| 426 <dd>PDF of the t distribution</dd> | |
| 427 <dt><b>t_rnd</b></dt> | |
| 428 <dd>Random deviates from the t distribution | |
| 429 </dd> | |
| 430 <dt><b>uniform_cdf</b></dt> | |
| 431 <dd>CDF of the uniform distribution</dd> | |
| 432 <dt><b>uniform_inv</b></dt> | |
| 433 <dd>Quantile function of the uniform distribution</dd> | |
| 434 <dt><b>uniform_pdf</b></dt> | |
| 435 <dd>PDF of the uniform distribution</dd> | |
| 436 <dt><b>uniform_rnd</b></dt> | |
| 437 <dd>Random deviates from the uniform distribution | |
| 438 </dd> | |
| 439 <dt><b>weibull_cdf</b></dt> | |
| 440 <dd>CDF of the Weibull distribution</dd> | |
| 441 <dt><b>weibull_inv</b></dt> | |
| 442 <dd>Quantile function of the Weibull distribution</dd> | |
| 443 <dt><b>weibull_pdf</b></dt> | |
| 444 <dd>PDF of the Weibull distribution</dd> | |
| 445 <dt><b>weibull_rnd</b></dt> | |
| 446 <dd>Random deviates from the Weibull distribution | |
| 447 </dd> | |
| 448 <dt><b>wiener_rnd</b></dt> | |
| 449 <dd>Simulate a Wiener process</dd> | |
| 450 </dl></li> | |
| 451 | |
| 452 <li>In statistics/models (new directory): | |
| 453 <dl> | |
| 454 <dt><b>logistic_regression</b></dt> | |
| 455 <dd>ordinal logistic regression</dd> | |
| 456 <dt><b>logistic_regression_derivatives</b></dt> | |
| 457 <dd>derivates of log-likelihood | |
| 458 in logistic regression</dd> | |
| 459 <dt><b>logistic_regression_likelihood</b></dt> | |
| 460 <dd>likelihood in logistic regression</dd> | |
| 461 </dl></li> | |
| 462 | |
| 463 <li>In statistics/tests (new directory): | |
| 464 <dl> | |
| 465 <dt><b>anova</b></dt> | |
| 466 <dd>one-way analysis of variance</dd> | |
| 467 <dt><b>bartlett_test</b></dt> | |
| 468 <dd>bartlett test for homogeneity of variances</dd> | |
| 469 <dt><b>chisquare_test_homogeneity</b></dt> | |
| 470 <dd>chi-square test for homogeneity</dd> | |
| 471 <dt><b>chisquare_test_independence</b></dt> | |
| 472 <dd>chi-square test for independence</dd> | |
| 473 <dt><b>cor_test</b></dt> | |
| 474 <dd>test for zero correlation</dd> | |
| 475 <dt><b>f_test_regression</b></dt> | |
| 476 <dd>test linear hypotheses in linear | |
| 477 regression model</dd> | |
| 478 <dt><b>hotelling_test</b></dt> | |
| 479 <dd>test for mean of a multivariate normal</dd> | |
| 480 <dt><b>hotelling_test_2</b></dt> | |
| 481 <dd>compare means of two multivariate normals</dd> | |
| 482 <dt><b>kolmogorov_smirnov_test</b></dt> | |
| 483 <dd>one-sample Kolmogorov-Smirnov test</dd> | |
| 484 <dt><b>kolmogorov_smirnov_test_2</b></dt> | |
| 485 <dd>two-sample Kolmogorov-Smirnov test</dd> | |
| 486 <dt><b>kruskal_wallis_test</b></dt> | |
| 487 <dd>kruskal-Wallis test</dd> | |
| 488 <dt><b>manova</b></dt> | |
| 489 <dd>one-way multivariate analysis of variance</dd> | |
| 490 <dt><b>mcnemar_test</b></dt> | |
| 491 <dd>mcnemar's test for symmetry</dd> | |
| 492 <dt><b>prop_test_2</b></dt> | |
| 493 <dd>compare two proportions</dd> | |
| 494 <dt><b>run_test</b></dt> | |
| 495 <dd>run test for independence</dd> | |
| 496 <dt><b>sign_test</b></dt> | |
| 497 <dd>sign test</dd> | |
| 498 <dt><b>t_test</b></dt> | |
| 499 <dd>student's one-sample t test </dd> | |
| 500 <dt><b>t_test_2</b></dt> | |
| 501 <dd>student's two-sample t test</dd> | |
| 502 <dt><b>t_test_regression</b></dt> | |
| 503 <dd>test one linear hypothesis in linear | |
| 504 regression model</dd> | |
| 505 <dt><b>u_test</b></dt> | |
| 506 <dd>mann-Whitney U-test</dd> | |
| 507 <dt><b>var_test</b></dt> | |
| 508 <dd>f test to compare two variances</dd> | |
| 509 <dt><b>welch_test</b></dt> | |
| 510 <dd>welch two-sample t test</dd> | |
| 511 <dt><b>wilcoxon_test</b></dt> | |
| 512 <dd>wilcoxon signed-rank test</dd> | |
| 513 <dt><b>z_test</b></dt> | |
| 514 <dd>test for mean of a normal sample with | |
| 515 known variance</dd> | |
| 516 <dt><b>z_test_2</b></dt> | |
| 517 <dd>compare means of two normal samples with | |
| 518 known variances</dd> | |
| 519 </dl></li> | |
| 520 </ul></li> | |
| 521 | |
| 522 <li>The save command now accepts the option -append to save the | |
| 523 variables at the end of the file, leaving the existing contents.</li> | |
| 524 | |
| 525 <li>New command-line option --no-history (also available using the | |
| 526 single character option -H) inhibits saving command history.</li> | |
| 527 | |
| 528 <li>The mkoctfile script now accepts -DDEF options and passes them on | |
| 529 to the C and C++ compilers.</li> | |
| 530 </ul | |
| 531 > | |
| 532 <h2>Summary of changes for version 2.0.13</h2> | |
| 533 | |
| 534 <p>This is a bug-fixing release. There are no new user-visible features.</p> | |
| 535 | |
| 536 <h2>Summary of changes for version 2.0.12</h2> | |
| 537 | |
| 538 <ul> | |
| 539 <li>Tilde expansion is once again performed on the directories listed | |
| 540 in the LOADPATH variable.</li> | |
| 541 | |
| 542 <li>gplot now supports the `axes' qualifier that is new with gnuplot | |
| 543 3.6beta.</li> | |
| 544 | |
| 545 <li>Timestamps on .m and .oct files are now only checked if a prompt | |
| 546 has been printed since the last timestamp check.</li> | |
| 547 | |
| 548 <li>Octave now prints a warning if a .m or .oct file has a time stamp | |
| 549 in the future.</li> | |
| 550 | |
| 551 <li>For matrices, x(:) now works no matter what the value of | |
| 552 do_fortran_indexing is.</li> | |
| 553 | |
| 554 <li>New keywords __FILE__ and __LINE__ expand to the name of the file | |
| 555 that is being read and the current input line number, respectively.</li> | |
| 556 | |
| 557 <li>The GNU Info reader is no longer distributed with Octave because | |
| 558 current releases of GNU Info now support all the features needed | |
| 559 by Octave. If your copy of GNU Info doesn't support the | |
| 560 --index-search option, you should install a newer version of GNU | |
| 561 Info, which is distributed as part of the GNU Texinfo package.</li> | |
| 562 | |
| 563 <li>Running `make check' should work now before you run `make install', | |
| 564 even if you build a copy of Octave that depends on shared versions | |
| 565 of the Octave libraries.</li> | |
| 566 | |
| 567 <li>Octave now uses kpathsea 3.2.</li> | |
| 568 | |
| 569 <li>The new built-in variable `kluge_procbuf_delay' specifies the number | |
| 570 of microseconds to delay in the parent process after forking. By | |
| 571 default on gnu-win32 systems, it's set to 500000 (1/2 second). On | |
| 572 other systems, the default value is 0. Delaying for a short time | |
| 573 in the parent after forking seems to avoid problems in which | |
| 574 communicating with subprocesses via pipes would sometimes cause | |
| 575 Octave to hang. I doubt that the delay is really the right | |
| 576 solution. If anyone has a better idea, I'd love to hear it.</li> | |
| 577 </ul> | |
| 578 | |
| 579 <h2>Summary of changes for version 2.0.11</h2> | |
| 580 | |
| 581 <ul> | |
| 582 <li>There are two new built-in variables that control how global | |
| 583 variables are initialized. If `initialize_global_variables' is | |
| 584 nonzero, global variables are initialized to the value of the | |
| 585 variable `default_global_variable_value'. The default value of | |
| 586 `initialize_global_variables' is 0 (1 if you use --traditional) | |
| 587 and `default_global_variable_value' is undefined (the empty matrix | |
| 588 if you use --traditional). The default settings are compatible | |
| 589 with versions of Octave before 2.0.10.</li> | |
| 590 </ul> | |
| 591 | |
| 592 <h2>Summary of changes for version 2.0.10</h2> | |
| 593 | |
| 594 <ul> | |
| 595 <li>The built-in variable `PWD' has been removed. If you need to get | |
| 596 the value of the current working directory, use the pwd() function | |
| 597 instead.</li> | |
| 598 <li>For compatibility with Matlab, Octave's lyap function now solves | |
| 599 <pre> | |
| 600 A*X + X*A' + C = 0 | |
| 601 </pre> | |
| 602 instead of | |
| 603 <pre> | |
| 604 A'*X + X*A + C = 0 | |
| 605 </pre> | |
| 606 To try to avoid confusion for people who are used to the way | |
| 607 Octave behaved in previous versions, a warning is printed the | |
| 608 first time lyap is called in a given session. To completely | |
| 609 disable the warning, simply add | |
| 610 <pre> | |
| 611 global __disable_lyap_interface_change_warning__; | |
| 612 </pre> | |
| 613 to your ~/.octaverc file. The warning will eventually disappear | |
| 614 for good in some future version of Octave.</li> | |
| 615 <li>New built-in functions for computing Bessel functions: | |
| 616 besseli, besselj, besselk, and bessely.</li> | |
| 617 <li>The gammai and betai functions are now implemented as built-in | |
| 618 functions rather than function files.</li> | |
| 619 <li>The new built-in variable `implicit_num_to_str_ok' controls | |
| 620 whether Octave converts expressions like `[97, 98, 99, "123"]' to | |
| 621 strings. The default value is 0 unless you use --traditional.</li> | |
| 622 <li>The new built-in variable `fixed_point_format' controls whether | |
| 623 Octave uses a scaled fixed-point format for displaying matrices. | |
| 624 The default value is 0 unless you use --traditional.</li> | |
| 625 <li>The function sumsq now computes sum (x .* conj (x)) for complex values.</li> | |
| 626 <li>Dynamically linked functions can be cleared.</li> | |
| 627 <li>If a .oct file has a time stamp more recent than the time that it | |
| 628 was loaded, it is automatically reloaded. Reloading a .oct file | |
| 629 may cause several functions to be cleared automatically. By | |
| 630 default, a warning is printed that lists the names of the | |
| 631 functions that will be cleared. You can suppress the message by | |
| 632 setting the new built-in variable `warn_reload_forces_clear' to 0.</li> | |
| 633 <li>Global variables are now initialized to the empty matrix, for | |
| 634 compatibility with Matlab.</li> | |
| 635 <li>Explicit initialization of global variables only happens once. | |
| 636 For example, after the following statements are evaluated, g still | |
| 637 has the value 1. | |
| 638 <pre> | |
| 639 global g = 1 | |
| 640 global g = 2 | |
| 641 </pre> | |
| 642 This is useful for initializing global variables that are used to | |
| 643 maintain state information that is shared among several functions.</li> | |
| 644 <li>The new built-in variable max_recursion_depth allows you to | |
| 645 prevent Octave from attempting infinite recursion. The default | |
| 646 value is 256.</li> | |
| 647 <li>Octave now uses readline version 2.1 and kpathsea 3.0.</li> | |
| 648 <li>The libreadline and libkpathsea libraries are no longer installed.</li> | |
| 649 <li>The libcruft, liboctave, and liboctinterp libraries are now | |
| 650 installed in $libdir/octave instead of just $libdir.</li> | |
| 651 <li>It's no longer necessary to have libg++, but you do need to have | |
| 652 the GNU implementation of libstdc++. If you are using gcc 2.7.2, | |
| 653 libstdc++ is distributed as part of libg++ 2.7.2. For later | |
| 654 versions, libstdc++ is distributed separately. For egcs, | |
| 655 libstdc++ is included with the compiler distribution.</li> | |
| 656 </ul> | |
| 657 | |
| 658 <h2>Summary of changes for version 2.0.9</h2> | |
| 659 | |
| 660 <p>This is a bug-fixing release, but there is one new user-visible | |
| 661 feature:</p> | |
| 662 | |
| 663 <ul> | |
| 664 <li>It is now possible to specify a label for lines in the plot key | |
| 665 when using the plot function. For example, | |
| 666 <pre> | |
| 667 plot (x, y, "-*;sin(x);") | |
| 668 </pre> | |
| 669 plots y vs. x using the linespoints style and sets the title of | |
| 670 the line in the key to be `sin(x)'</li> | |
| 671 </ul> | |
| 672 | |
| 673 <h2>Summary of changes for version 2.0.8</h2> | |
| 674 | |
| 675 <p>This is a bug-fixing release. There are only a few new user-visible | |
| 676 features.</p> | |
| 677 | |
| 678 <ul> | |
| 679 <li>If the argument to eig() is symmetric, Octave uses the specialized | |
| 680 Lapack subroutine for symmetric matrices for a significant | |
| 681 increase in performance.</li> | |
| 682 <li>It is now possible to use the mkoctfile script to create .oct | |
| 683 files from multiple source and object files.</li> | |
| 684 </ul> | |
| 685 | |
| 686 <h2>Summary of changes for version 2.0.7</h2> | |
| 687 | |
| 688 <p>This is a bug-fixing release. There are no new user-visible features.</p> | |
| 689 | |
| 690 <h2>Summary of changes for version 2.0.6</h2> | |
| 691 | |
| 692 <p>This is primarily a bug-fixing release. There are only a few new | |
| 693 user-visilbe features.</p> | |
| 694 | |
| 695 <ul> | |
| 696 <li>The new built-in variable default_eval_print_flag controls whether | |
| 697 Octave prints the results of commands executed by eval() that do | |
| 698 not end with semicolons. The default is 1.</li> | |
| 699 <li>The new built-in constant OCTAVE_HOME specifies the top-level | |
| 700 directory where Octave is installed.</li> | |
| 701 <li>Octave no longer includes functions to work with NPSOL or QPSOL, | |
| 702 because they are not free software.</li> | |
| 703 </ul> | |
| 704 | |
| 705 <h2>Summary of changes for version 2.0.5</h2> | |
| 706 | |
| 707 <ul> | |
| 708 <li>A `switch' statement is now available. See the Statements chapter | |
| 709 in the manual for details.</li> | |
| 710 <li>Commands like ls, save, and cd may now also be used as formal | |
| 711 parameters for functions.</li> | |
| 712 <li>More tests.</li> | |
| 713 </ul> | |
| 714 | |
| 715 <h2>Summary of changes for version 2.0.4</h2> | |
| 716 | |
| 717 <ul> | |
| 718 <li>It is now possible to use commands like ls, save, and cd as simple | |
| 719 variable names. They still cannot be used as formal parameters | |
| 720 for functions, or as the names of structure variables. Failed | |
| 721 assignments leave them undefined (you can recover the orginal | |
| 722 function definition using clear).</li> | |
| 723 <li>Is is now possible to invoke commands like ls, save, and cd as | |
| 724 normal functions (for example, load ("foo", "x", "y", "z")).</li> | |
| 725 </ul> | |
| 726 | |
| 727 <h2>Summary of changes for version 2.0.3</h2> | |
| 728 | |
| 729 <ul> | |
| 730 <li>The manual has been completely revised and now corresponds much | |
| 731 more closely to the features of the current version.</li> | |
| 732 <li>The return value for assignment expressions is now the RHS since | |
| 733 that is more consistent with the way other programming languages | |
| 734 work. However, Octave still prints the entire LHS value so that | |
| 735 <pre> | |
| 736 x = zeros (1, 2); | |
| 737 x(2) = 1 | |
| 738 </pre> | |
| 739 still prints | |
| 740 <pre> | |
| 741 x = | |
| 742 | |
| 743 0 1 | |
| 744 | |
| 745 </pre> | |
| 746 but an assignment like | |
| 747 <pre> | |
| 748 z = x(2) = 1 | |
| 749 </pre> | |
| 750 sets z to 1 (not [ 0, 1 ] as in previous versions of Octave).</li> | |
| 751 <li>It is now much easier to make binary distributions. See the | |
| 752 Binary Distributions section of the manual for more details.</li> | |
| 753 </ul> | |
| 754 | |
| 755 <h2>Summary of changes for version 2.0.2</h2> | |
| 756 | |
| 757 <ul></li> | |
| 758 <li>Octave now stops executing commands from a script file if an error | |
| 759 is encountered.</li> | |
| 760 <li>The return, and break commands now cause Octave to quit executing | |
| 761 commands from script files. When used in invalid contexts, the | |
| 762 break, continue, and return commands are now simply ignored | |
| 763 instead of producing parse errors.</li> | |
| 764 <li>size ("") is now [0, 0].</li> | |
| 765 <li>New functions: | |
| 766 <dl> | |
| 767 <dt><b>sleep</b></dt> | |
| 768 <dd>pause execution for a specified number of seconds</dd> | |
| 769 <dt><b>usleep</b></dt> | |
| 770 <dd>pause execution for a specified number of microseconds</dd> | |
| 771 </dl></li> | |
| 772 </ul> | |
| 773 </pre> | |
| 774 | |
| 775 <h2>Summary of changes for version 2.0.1</h2> | |
| 776 | |
| 777 <p>Other than bug fixes, there were no user-visible changes in version | |
| 778 2.0.1. | |
| 779 | |
| 780 <h2>Summary of changes for version 2.0</h2> | |
| 781 | |
| 782 <p><ul> | |
| 783 <li>The set and show commands for setting and displaying gnuplot | |
| 784 parameters have been replaced by gset and gshow. This change will | |
| 785 probably break lots of things, but it is necessary to allow for | |
| 786 compatibility with the Matlab graphics and GUI commands in a | |
| 787 future version of Octave. (For now, the old set and show commands | |
| 788 do work, but they print an annoying warning message to try to get | |
| 789 people to switch to using gset.)</li> | |
| 790 <li>Octave has been mostly ported to Windows NT and Windows 95 using | |
| 791 the beta 17 release of the Cygnus GNU-WIN32 tools. Not everything | |
| 792 works, but it is usable. See the file README.WINDOWS for more | |
| 793 information.</li> | |
| 794 <li>Dynamic linking works on more systems using dlopen() and friends | |
| 795 (most modern Unix systems) or shl_load() and friends (HP/UX | |
| 796 systems). A simple example is provided in examples/hello.cc. | |
| 797 For this feature to work, you must configure Octave with | |
| 798 --enable-shared. You may also need to have a shared-library | |
| 799 version of libg++ and libstdc++.</li> | |
| 800 <li>New data types can be added to Octave by writing a C++ class. On | |
| 801 systems that support dynamic linking, new data types can be added | |
| 802 to an already running Octave binary. A simple example appears in | |
| 803 the file examples/make_int.cc. Other examples are the standard | |
| 804 Octave data types defined in the files src/ov*.{h,cc} and | |
| 805 src/op-*.cc.</li> | |
| 806 <li>The configure option --enable-bounds-check turns on bounds | |
| 807 checking on element references for Octave's internal array and | |
| 808 matrix classes. It's enabled by default. To disable this | |
| 809 feature, configure Octave with --disable-bounds-check.</li> | |
| 810 <li>The C-style I/O functions (fopen, fprintf, etc.) have been | |
| 811 rewritten to be more compatible with Matlab. The fputs function | |
| 812 has also been added. Usage of the *printf functions that was | |
| 813 allowed in previous versions of Octave should still work. | |
| 814 However, there is no way to make the new versions of the *scanf | |
| 815 functions compatible with Matlab *and* previous versions of | |
| 816 Octave. An optional argument to the *scanf functions is now | |
| 817 available to make them behave in a way that is compatible with | |
| 818 previous versions of Octave.</li> | |
| 819 <li>Octave can now read files that contain columns of numbers only, | |
| 820 with no header information. The name of the loaded variable is | |
| 821 constructed from the file name. Each line in the file must have | |
| 822 the same number of elements.</li> | |
| 823 <li>The interface to the pager has changed. The new built-in variable | |
| 824 `page_output_immediately' controls when Octave sends output to the | |
| 825 pager. If it is nonzero, Octave sends output to the pager as soon | |
| 826 as it is available. Otherwise, Octave buffers its output and | |
| 827 waits until just before the prompt is printed to flush it to the | |
| 828 pager.</li> | |
| 829 <li>Expressions of the form | |
| 830 <pre> | |
| 831 A(i,j) = x | |
| 832 </pre> | |
| 833 where X is a scalar and the indices i and j define a matrix of | |
| 834 elements now work as you would expect rather than giving an error. | |
| 835 I am told that this is how Matlab 5.0 will behave when it is | |
| 836 released.</li> | |
| 837 <li>Indexing of character strings now works.</li> | |
| 838 <li>The echo command has been implemented.</li> | |
| 839 <li>The document command is now a regular function.</li> | |
| 840 <li>New method for handling errors: | |
| 841 <pre> | |
| 842 try | |
| 843 BODY | |
| 844 catch | |
| 845 CLEANUP | |
| 846 end_try_catch | |
| 847 </pre> | |
| 848 Where BODY and CLEANUP are both optional and may contain any | |
| 849 Octave expressions or commands. The statements in CLEANUP are | |
| 850 only executed if an error occurs in BODY. | |
| 851 | |
| 852 <p> No warnings or error messages are printed while BODY is | |
| 853 executing. If an error does occur during the execution of BODY, | |
| 854 CLEANUP can access the text of the message that would have been | |
| 855 printed in the builtin constant __error_text__. This is the same | |
| 856 as eval (TRY, CATCH) (which may now also use __error_text__) but | |
| 857 it is more efficient since the commands do not need to be parsed | |
| 858 each time the TRY and CATCH statements are evaluated.</li> | |
| 859 <li>Octave no longer parses the help command by grabbing everything | |
| 860 after the keyword `help' until a newline character is read. To | |
| 861 get help for `;' or `,', now, you need to use the command | |
| 862 `help semicolon' or `help comma'.</li> | |
| 863 <li>Octave's parser now does some simple constant folding. This means | |
| 864 that expressions like 3*i are now evaluated only once, when a | |
| 865 function is compiled, and the right hand side of expressions like | |
| 866 a = [1,2;3,4] are treated as true matrix constants rather than | |
| 867 lists of elements which must be evaluated each time they are | |
| 868 needed.</li> | |
| 869 <li>Built-in variables that can take values of "true" and "false" can | |
| 870 now also be set to any nonzero scalar value to indicate "true", | |
| 871 and 0 to indicate "false".</li> | |
| 872 <li>New built-in variables `history_file', `history_size', and | |
| 873 `saving_history'.</li> | |
| 874 <li>New built-in variable `string_fill_char' specifies the character | |
| 875 to fill with when creating arrays of strings.</li> | |
| 876 <li>If the new built-in variable `gnuplot_has_frames' is nonzero, | |
| 877 Octave assumes that your copy of gnuplot includes support for | |
| 878 multiple plot windows when using X11. | |
| 879 | |
| 880 If the new built-in variable `gnuplot_has_multiplot' is nonzero, | |
| 881 Octave assumes that your copy of gnuplot has the multiplot support | |
| 882 that is included in recent 3.6beta releases. | |
| 883 | |
| 884 The initial values of these variables are determined by configure, | |
| 885 but can be changed in your startup script or at the command line | |
| 886 in case configure got it wrong, or if you upgrade your gnuplot | |
| 887 installation.</li> | |
| 888 <li>The new plot function `figure' allows multiple plot windows when | |
| 889 using newer versions of gnuplot with X11.</li> | |
| 890 <li>Octave now notices when the plotter has exited unexpectedly.</li> | |
| 891 <li>New built-in variable `warn_missing_semicolon'. If nonzero, Octave | |
| 892 will warn when statements in function definitions don't end in | |
| 893 semicolons. The default value is 0.</li> | |
| 894 <li>Octave now attempts to continue after floating point exceptions | |
| 895 or out-of-memory errors.</li> | |
| 896 <li>If Octave crashes, it now attempts to save all user-defined | |
| 897 variables in a file named `octave-core' in the current directory | |
| 898 before exiting.</li> | |
| 899 <li>It is now possible to get the values of individual option settings | |
| 900 for the dassl, fsolve, lsode, npsol, qpsol, and quad functions | |
| 901 using commands like | |
| 902 <pre> | |
| 903 dassl_reltol = dassl_options ("relative tolerance"); | |
| 904 </pre></li> | |
| 905 <li>The svd() function no longer computes the left and right singular | |
| 906 matrices unnecessarily. This can significantly improve | |
| 907 performance for large matrices if you are just looking for the | |
| 908 singular values.</li> | |
| 909 <li>The filter() function is now a built-in function.</li> | |
| 910 <li>New function randn() returns a pseudo-random number from a normal | |
| 911 distribution. The rand() and randn() functions have separate | |
| 912 seeds and generators.</li> | |
| 913 <li>Octave's command-line arguments are now available in the built-in | |
| 914 variable `argv'. The program name is also available in the | |
| 915 variables `program_invocation_name' and `program_name'. If | |
| 916 executing a script from the command line (e.g., octave foo.m) or | |
| 917 using the `#! /bin/octave' hack, the program name is set to the | |
| 918 name of the script.</li> | |
| 919 <li>New built-in variable `completion_append_char' used as the | |
| 920 character to append to successful command-line completion | |
| 921 attempts. The default is " " (a single space).</li> | |
| 922 <li>Octave now uses a modified copy of the readline library from | |
| 923 version 1.14.5 of GNU bash.</li> | |
| 924 <li>In prompt strings, `\H' expands to the whole host name.</li> | |
| 925 <li>New built-in variable `beep_on_error'. If nonzero, Octave will try | |
| 926 to ring your terminal's bell before printing an error message. | |
| 927 The default value is 0.</li> | |
| 928 <li>For functions defined from files, the type command now prints the | |
| 929 text of the file. You can still get the text reconstructed from | |
| 930 the parse tree by using the new option -t (-transformed).</li> | |
| 931 <li>New command-line argument --traditional sets the following | |
| 932 preference variables for compatibility with Matlab: | |
| 933 <pre> | |
| 934 PS1 = ">> " | |
| 935 PS2 = "" | |
| 936 beep_on_error = 1 | |
| 937 default_save_format = "mat-binary" | |
| 938 define_all_return_values = 1 | |
| 939 do_fortran_indexing = 1 | |
| 940 empty_list_elements_ok = 1 | |
| 941 implicit_str_to_num_ok = 1 | |
| 942 ok_to_lose_imaginary_part = 1 | |
| 943 page_screen_output = 0 | |
| 944 prefer_column_vectors = 0 | |
| 945 prefer_zero_one_indexing = 1 | |
| 946 print_empty_dimensions = 0 | |
| 947 treat_neg_dim_as_zero = 1 | |
| 948 warn_function_name_clash = 0 | |
| 949 whitespace_in_literal_matrix = "traditional" | |
| 950 </pre></li> | |
| 951 <li>New functions: | |
| 952 <dl> | |
| 953 <dt><b>readdir</b></dt> | |
| 954 <dd>returns names of files in directory as array of strings</dd> | |
| 955 <dt><b>mkdir</b></dt> | |
| 956 <dd>create a directory</dd> | |
| 957 <dt><b>rmdir</b></dt> | |
| 958 <dd>remove a directory</dd> | |
| 959 <dt><b>rename</b></dt> | |
| 960 <dd>rename a file</dd> | |
| 961 <dt><b>unlink</b></dt> | |
| 962 <dd>delete a file</dd> | |
| 963 <dt><b>umask</b></dt> | |
| 964 <dd>set permission mask for file creation</dd> | |
| 965 <dt><b>stat</b></dt> | |
| 966 <dd>get information about a file</dd> | |
| 967 <dt><b>lstat</b></dt> | |
| 968 <dd>get information about a symbolic link</dd> | |
| 969 <dt><b>glob</b></dt> | |
| 970 <dd>perform filename globbing</dd> | |
| 971 <dt><b>fnmatch</b></dt> | |
| 972 <dd>match strings with filename globbing patterns</dd> | |
| 973 <dt><b>more</b></dt> | |
| 974 <dd>turn the pager on or off</dd> | |
| 975 <dt><b>gammaln</b></dt> | |
| 976 <dd>alias for lgamma</dd> | |
| 977 </dl></li> | |
| 978 <li>New audio functions from Andreas Weingessel: | |
| 979 <dl> | |
| 980 <dt><b>lin2mu</b></dt> | |
| 981 <dd>linear to mu-law encoding</dd> | |
| 982 <dt><b>loadaudio</b></dt> | |
| 983 <dd>load an audio file to a vector</dd> | |
| 984 <dt><b>mu2lin</b></dt> | |
| 985 <dd>mu-law to linear encoding</dd> | |
| 986 <dt><b>playaudio</b></dt> | |
| 987 <dd>play an audio file</dd> | |
| 988 <dt><b>record</b></dt> | |
| 989 <dd>record sound and store in vector</dd> | |
| 990 <dt><b>saveaudio</b></dt> | |
| 991 <dd>save a vector as an audio file</dd> | |
| 992 <dt><b>setaudio</b></dt> | |
| 993 <dd>executes mixer shell command</dd> | |
| 994 </dl></li> | |
| 995 <li>New plotting functions from Vinayak Dutt. Ones dealing with | |
| 996 multiple plots on one page require features from gnuplot 3.6beta | |
| 997 (or later). | |
| 998 <dl> | |
| 999 <dt><b>bottom_title</b></dt> | |
| 1000 <dd>put title at the bottom of the plot</dd> | |
| 1001 <dt><b>mplot</b></dt> | |
| 1002 <dd>multiplot version of plot</dd> | |
| 1003 <dt><b>multiplot</b></dt> | |
| 1004 <dd>switch multiple-plot mode on or off</dd> | |
| 1005 <dt><b>oneplot</b></dt> | |
| 1006 <dd>return to one plot per page</dd> | |
| 1007 <dt><b>plot_border</b></dt> | |
| 1008 <dd>put a border around plots</dd> | |
| 1009 <dt><b>subplot</b></dt> | |
| 1010 <dd>position multiple plots on a single page</dd> | |
| 1011 <dt><b>subwindow</b></dt> | |
| 1012 <dd>set subwindow position for next plot</dd> | |
| 1013 <dt><b>top_title</b></dt> | |
| 1014 <dd>put title at the top of the plot</dd> | |
| 1015 <dt><b>zlabel</b></dt> | |
| 1016 <dd>put a label on the z-axis</dd> | |
| 1017 </dl></li> | |
| 1018 <li>New string functions | |
| 1019 <dl> | |
| 1020 <dt><b>bin2dec</b></dt> | |
| 1021 <dd>convert a string of ones and zeros to an integer</dd> | |
| 1022 <dt><b>blanks</b></dt> | |
| 1023 <dd>create a string of blanks</dd> | |
| 1024 <dt><b>deblank</b></dt> | |
| 1025 <dd>delete trailing blanks</dd> | |
| 1026 <dt><b>dec2bin</b></dt> | |
| 1027 <dd>convert an integer to a string of ones and zeros</dd> | |
| 1028 <dt><b>dec2hex</b></dt> | |
| 1029 <dd>convert an integer to a hexadecimal string</dd> | |
| 1030 <dt><b>findstr</b></dt> | |
| 1031 <dd>locate occurrences of one string in another</dd> | |
| 1032 <dt><b>hex2dec</b></dt> | |
| 1033 <dd>convert a hexadecimal string to an integer</dd> | |
| 1034 <dt><b>index</b></dt> | |
| 1035 <dd>return position of first occurrence a string in another</dd> | |
| 1036 <dt><b>rindex</b></dt> | |
| 1037 <dd>return position of last occurrence a string in another</dd> | |
| 1038 <dt><b>split</b></dt> | |
| 1039 <dd>divide one string into pieces separated by another</dd> | |
| 1040 <dt><b>str2mat</b></dt> | |
| 1041 <dd>create a string matrix from a list of strings</dd> | |
| 1042 <dt><b>strrep</b></dt> | |
| 1043 <dd>replace substrings in a string</dd> | |
| 1044 <dt><b>substr</b></dt> | |
| 1045 <dd>extract a substring</dd> | |
| 1046 </dl> | |
| 1047 <p> The following functions return a matrix of ones and zeros. | |
| 1048 Elements that are nonzero indicate that the condition was true for | |
| 1049 the corresponding character in the string array. | |
| 1050 <dl> | |
| 1051 <dt><b>isalnum</b></dt> | |
| 1052 <dd>letter or a digit</dd> | |
| 1053 <dt><b>isalpha</b></dt> | |
| 1054 <dd>letter</dd> | |
| 1055 <dt><b>isascii</b></dt> | |
| 1056 <dd>ascii</dd> | |
| 1057 <dt><b>iscntrl</b></dt> | |
| 1058 <dd>control character</dd> | |
| 1059 <dt><b>isdigit</b></dt> | |
| 1060 <dd>digit</dd> | |
| 1061 <dt><b>isgraph</b></dt> | |
| 1062 <dd>printable (but not space character)</dd> | |
| 1063 <dt><b>islower</b></dt> | |
| 1064 <dd>lower case</dd> | |
| 1065 <dt><b>isprint</b></dt> | |
| 1066 <dd>printable (including space character)</dd> | |
| 1067 <dt><b>ispunct</b></dt> | |
| 1068 <dd>punctuation</dd> | |
| 1069 <dt><b>isspace</b></dt> | |
| 1070 <dd>whitespace</dd> | |
| 1071 <dt><b>isupper</b></dt> | |
| 1072 <dd>upper case</dd> | |
| 1073 <dt><b>isxdigit</b></dt> | |
| 1074 <dd>hexadecimal digit</dd> | |
| 1075 </dl> | |
| 1076 <p> These functions return new strings. | |
| 1077 <dl> | |
| 1078 <dt><b>tolower</b></dt> | |
| 1079 <dd>convert to lower case</dd> | |
| 1080 <dt><b>toupper</b></dt> | |
| 1081 <dd>convert to upper case</dd> | |
| 1082 </dl></li> | |
| 1083 <li>New function, fgetl. Both fgetl and fgets accept an optional | |
| 1084 second argument that specifies a maximum number of characters to | |
| 1085 read, and the function fgets is now compatible with Matlab.</li> | |
| 1086 <li>Printing in hexadecimal format now works (format hex). It is also | |
| 1087 possible to print the internal bit representation of a value | |
| 1088 (format bit). Note that these formats are only implemented for | |
| 1089 numeric values.</li> | |
| 1090 <li>Additional structure features: | |
| 1091 <ul> | |
| 1092 <li>Name completion now works for structures.</li> | |
| 1093 <li>Values and names of structure elements are now printed by | |
| 1094 default. The new built-in variable `struct_levels_to_print' | |
| 1095 controls the depth of nested structures to print. The default | |
| 1096 value is 2.</li> | |
| 1097 <li>New functions: | |
| 1098 <dl> | |
| 1099 <dt><b>struct_contains (S, NAME)</b></dt> | |
| 1100 <dd>returns 1 if S is a structure with element NAME; otherwise returns 0.</dd> | |
| 1101 <dt><b>struct_elements (S)</b></dt> | |
| 1102 <dd>returns the names of all elements of structure S in an array of | |
| 1103 strings.</dd> | |
| 1104 </dl></li> | |
| 1105 </ul></li> | |
| 1106 <li>New io/subprocess functions: | |
| 1107 <dl> | |
| 1108 <dt><b>fputs</b></dt> | |
| 1109 <dd>write a string to a file with no formatting</dd> | |
| 1110 <dt><b>popen2</b></dt> | |
| 1111 <dd>start a subprocess with 2-way communication</dd> | |
| 1112 <dt><b>mkfifo</b></dt> | |
| 1113 <dd>create a FIFO special file</dd> | |
| 1114 <dt><b>popen</b></dt> | |
| 1115 <dd>open a pipe to a subprocess</dd> | |
| 1116 <dt><b>pclose</b></dt> | |
| 1117 <dd>close a pipe from a subprocess</dd> | |
| 1118 <dt><b>waitpid</b></dt> | |
| 1119 <dd>check the status of or wait for subprocesses</dd> | |
| 1120 </dl></li> | |
| 1121 <li>New time functions: | |
| 1122 <dl> | |
| 1123 <dt><b>asctime</b></dt> | |
| 1124 <dd>format time structure according to local format</dd> | |
| 1125 <dt><b>ctime</b></dt> | |
| 1126 <dd>equivalent to `asctime (localtime (TMSTRUCT))'</dd> | |
| 1127 <dt><b>gmtime</b></dt> | |
| 1128 <dd>return time structure corresponding to UTC</dd> | |
| 1129 <dt><b>localtime</b></dt> | |
| 1130 <dd>return time structure corresponding to local time zone</dd> | |
| 1131 <dt><b>strftime</b></dt> | |
| 1132 <dd>print given time structure using specified format</dd> | |
| 1133 <dt><b>time</b></dt> | |
| 1134 <dd>return current time</dd> | |
| 1135 </dl> | |
| 1136 <p> The `clock' and `date' functions are now implemented in M-files | |
| 1137 using these basic functions.</li> | |
| 1138 <li>Access to additional Unix system calls: | |
| 1139 <dl> | |
| 1140 <dt><b>dup2</b></dt> | |
| 1141 <dd>duplicate a file descriptor</dd> | |
| 1142 <dt><b>exec</b></dt> | |
| 1143 <dd>replace current process with a new process</dd> | |
| 1144 <dt><b>fcntl</b></dt> | |
| 1145 <dd>control open file descriptors</dd> | |
| 1146 <dt><b>fork</b></dt> | |
| 1147 <dd>create a copy of the current process</dd> | |
| 1148 <dt><b>getpgrp</b></dt> | |
| 1149 <dd>return the process group id of the current process</dd> | |
| 1150 <dt><b>getpid</b></dt> | |
| 1151 <dd>return the process id of the current process</dd> | |
| 1152 <dt><b>getppid</b></dt> | |
| 1153 <dd>return the process id of the parent process</dd> | |
| 1154 <dt><b>getuid</b></dt> | |
| 1155 <dd>return the real user id of the current process</dd> | |
| 1156 <dt><b>getgid</b></dt> | |
| 1157 <dd>return the real group id of the current process</dd> | |
| 1158 <dt><b>geteuid</b></dt> | |
| 1159 <dd>return the effective user id of the current process</dd> | |
| 1160 <dt><b>getegid</b></dt> | |
| 1161 <dd>return the effective group id of the current process</dd> | |
| 1162 <dt><b>pipe</b></dt> | |
| 1163 <dd>create an interprocess channel</dd> | |
| 1164 </dl></li> | |
| 1165 <li>Other new functions: | |
| 1166 <dl> | |
| 1167 <dt><b>commutation_matrix</b></dt> | |
| 1168 <dd>compute special matrix form</dd> | |
| 1169 <dt><b>duplication_matrix</b></dt> | |
| 1170 <dd>compute special matrix form</dd> | |
| 1171 <dt><b>common_size.m</b></dt> | |
| 1172 <dd>bring arguments to a common size</dd> | |
| 1173 <dt><b>completion_matches</b></dt> | |
| 1174 <dd>perform command completion on string</dd> | |
| 1175 <dt><b>tilde_expand</b></dt> | |
| 1176 <dd>perform tilde expansion on string</dd> | |
| 1177 <dt><b>meshgrid</b></dt> | |
| 1178 <dd>compatible with Matlab's meshgrid function</dd> | |
| 1179 <dt><b>tmpnam</b></dt> | |
| 1180 <dd>replaces octave_tmp_file_name</dd> | |
| 1181 <dt><b>atexit</b></dt> | |
| 1182 <dd>register functions to be called when Octave exits</dd> | |
| 1183 <dt><b>putenv</b></dt> | |
| 1184 <dd>define an environment variable</dd> | |
| 1185 <dt><b>bincoeff</b></dt> | |
| 1186 <dd>compute binomial coefficients</dd> | |
| 1187 <dt><b>nextpow2</b></dt> | |
| 1188 <dd>compute the next power of 2 greater than a number</dd> | |
| 1189 <dt><b>detrend</b></dt> | |
| 1190 <dd>remove a best fit polynomial from data</dd> | |
| 1191 <dt><b>erfinv</b></dt> | |
| 1192 <dd>inverse error function</dd> | |
| 1193 <dt><b>shift</b></dt> | |
| 1194 <dd>perform a circular shift on the elements of a matrix</dd> | |
| 1195 <dt><b>pow2</b></dt> | |
| 1196 <dd>compute 2 .^ x</dd> | |
| 1197 <dt><b>log2</b></dt> | |
| 1198 <dd>compute base 2 logarithms</dd> | |
| 1199 <dt><b>diff</b></dt> | |
| 1200 <dd>compute differences of matrix elements</dd> | |
| 1201 <dt><b>vech</b></dt> | |
| 1202 <dd>stack columns of a matrix below the diagonal</dd> | |
| 1203 <dt><b>vec</b></dt> | |
| 1204 <dd>stack columns of a matrix to form a vector</dd> | |
| 1205 <dt><b>xor</b></dt> | |
| 1206 <dd>compute exclusive or</dd> | |
| 1207 </dl></li> | |
| 1208 <li>Functions for getting info from the password database on Unix systems: | |
| 1209 <dl> | |
| 1210 <dt><b>getpwent</b></dt> | |
| 1211 <dd>read entry from password-file stream, opening if necessary</dd> | |
| 1212 <dt><b>getpwuid</b></dt> | |
| 1213 <dd>search for password entry with matching user ID</dd> | |
| 1214 <dt><b>getpwnam</b></dt> | |
| 1215 <dd>search for password entry with matching username</dd> | |
| 1216 <dt><b>setpwent</b></dt> | |
| 1217 <dd>rewind the password-file stream</dd> | |
| 1218 <dt><b>endpwent</b></dt> | |
| 1219 <dd>close the password-file stream</dd> | |
| 1220 </dl></li> | |
| 1221 <li>Functions for getting info from the group database on Unix systems: | |
| 1222 <dl> | |
| 1223 <dt><b>getgrent</b></dt> | |
| 1224 <dd>read entry from group-file stream, opening if necessary</dd> | |
| 1225 <dt><b>getgrgid</b></dt> | |
| 1226 <dd>search for group entry with matching group ID</dd> | |
| 1227 <dt><b>getgrnam</b></dt> | |
| 1228 <dd>search for group entry with matching group name</dd> | |
| 1229 <dt><b>setgrent</b></dt> | |
| 1230 <dd>rewind the pgroup-file stream</dd> | |
| 1231 <dt><b>endgrent</b></dt> | |
| 1232 <dd>close the group-file stream</dd> | |
| 1233 </dl></li> | |
| 1234 <li>The New function octave_config_info returns a structure containing | |
| 1235 information about how Octave was configured and compiled.</li> | |
| 1236 <li>New function getrusage returns a structure containing system | |
| 1237 resource usage statistics. The `cputime' function is now defined | |
| 1238 in an M-file using getrusage.</li> | |
| 1239 <li>The info reader is now a separate binary that runs as a | |
| 1240 subprocess. You still need the info reader distributed with | |
| 1241 Octave though, because there are some new command-line arguments | |
| 1242 that are not yet available in the public release of Info.</li> | |
| 1243 <li>There is a new built-in variable, INFO_PROGRAM, which is used as | |
| 1244 the name of the info program to run. Its initial value is | |
| 1245 $OCTAVE_HOME/lib/octave/VERSION/exec/ARCH/info, but that value can | |
| 1246 be overridden by the environment variable OCTAVE_INFO_PROGRAM, or | |
| 1247 the command line argument --info-program NAME, or by setting the | |
| 1248 value of INFO_PROGRAM in a startup script.</li> | |
| 1249 <li>There is a new built-in variable, EXEC_PATH, which is used as | |
| 1250 the list of directories to search when executing subprograms. Its | |
| 1251 initial value is taken from the environment variable | |
| 1252 OCTAVE_EXEC_PATH (if it exists) or PATH, but that value can be | |
| 1253 overridden by the the command line argument --exec-path PATH, or | |
| 1254 by setting the value of EXEC_PATH in a startup script. If the | |
| 1255 EXEC_PATH begins (ends) with a colon, the directories | |
| 1256 $OCTAVE_HOME/lib/octave/VERSION/exec/ARCH and $OCTAVE_HOME/bin are | |
| 1257 prepended (appended) to EXEC_PATH (if you don't specify a value | |
| 1258 for EXEC_PATH explicitly, these special directories are prepended | |
| 1259 to your PATH).</li> | |
| 1260 <li>If it is present, Octave will now use an `ls-R' database file to | |
| 1261 speed up recursive path searching. Octave looks for a file called | |
| 1262 ls-R in the directory specified by the environment variable | |
| 1263 OCTAVE_DB_DIR. If that is not set but the environment variable | |
| 1264 OCTAVE_HOME is set, Octave looks in $OCTAVE_HOME/lib/octave. | |
| 1265 Otherwise, Octave looks in the directory $datadir/octave (normally | |
| 1266 /usr/local/lib/octave).</li> | |
| 1267 <li>New examples directory.</li> | |
| 1268 <li>There is a new script, mkoctfile, that can be used to create .oct | |
| 1269 files suitable for dynamic linking.</li> | |
| 1270 <li>Many more bug fixes.</li> | |
| 1271 <li>ChangeLogs are now kept in each subdirectory.</li></li> | |
| 1272 </ul> |