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annotate etc/NEWS.2 @ 20830:b65888ec820e draft default tip gccjit
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| author | Stefan Mahr <dac922@gmx.de> |
|---|---|
| date | Fri, 27 Feb 2015 16:59:36 +0100 |
| parents | 446c46af4b42 |
| children |
| rev | line source |
|---|---|
| 5781 | 1 Summary of changes for version 2.1.x: |
| 2 ------------------------------------ | |
| 3 | |
| 4 * Given a matrix, X, and a boolean index, idx, of the same shape as | |
| 5 X, X(idx) and X(idx) = RHS now work no matter what the value of | |
| 6 do_fortran_indexing is. | |
| 7 | |
| 8 * If you are using GNU Emacs 19.34 or earlier, you will need to add | |
| 9 the following code to your ~/.emacs file in order to use Emacs | |
| 10 Octave mode: | |
| 11 | |
| 12 ;; Set up the custom library. | |
| 13 ;; taken from http://www.dina.kvl.dk/~abraham/custom/ | |
| 14 (eval-and-compile | |
| 15 (condition-case () | |
| 16 (require 'custom) | |
| 17 (error nil)) | |
| 18 (if (and (featurep 'custom) (fboundp 'custom-declare-variable)) | |
| 19 nil ;; We've got what we needed | |
| 20 ;; We have the old custom-library, hack around it! | |
| 21 (defmacro defgroup (&rest args) | |
| 22 nil) | |
|
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23 (defmacro defcustom (var value doc &rest args) |
| 5781 | 24 (` (defvar (, var) (, value) (, doc)))))) |
| 25 | |
| 26 * When `format +' is in effect, Octave uses the following symbols to | |
| 27 provide more information about the values in a matrix: | |
| 28 | |
| 29 + postive real | |
| 30 - negative real | |
| 31 i pure imaginary | |
| 32 c complex | |
| 33 blank zero | |
| 34 | |
| 35 * The ++ and -- operators now work for indexed matrices, and the | |
| 36 following operators now work: | |
| 37 | |
| 38 +=, -=, *=, /=, \=, <<=, >>=, .*=, ./=, .\=, &=, |= | |
| 39 | |
| 40 These operators are currently implemented using a relatively | |
| 41 inefficient brute-force method but hey, they work. | |
| 42 | |
| 43 * The built-in variable argv is now a list of strings instead of a | |
| 44 string vector. | |
| 45 | |
| 46 * The value of LOADPATH set by the environment variable | |
| 47 OCTAVE_PATH, the -p or --path command line options, or on the | |
| 48 command line is no longer modified to include the default path. | |
| 49 Instead it is left as specified. Its default value is now ":", | |
| 50 which tells Octave to search the default path, and the new | |
| 51 built-in variable DEFAULT_LOADPATH contains the default list of | |
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52 directories to search. |
| 5781 | 53 |
| 54 * The function file_in_path no longer does any special processing of | |
| 55 its PATH argument. To search LOADPATH for files, it is now | |
| 56 generally better to use the new function file_in_loadpath. | |
| 57 | |
| 58 * If fread is given a skip parameter, the skip is performed after | |
| 59 the read instead of before (for compatibility with Matlab). | |
| 60 | |
| 61 * The new built-in variable `crash_dumps_octave_core' controls | |
| 62 whether Octave writes user variables to the file `octave-core' | |
| 63 when it crashes or is killed by a signal. The default value is 1 | |
| 64 (0 if you use --traditional). | |
| 65 | |
| 66 * If LOADPATH contains a doubled colon, the default path is inserted | |
| 67 in its place. This is similar to the substitution that also takes | |
| 68 place for leading or trailing colons in the LOADPATH. | |
| 69 | |
| 70 * Loops of the form `for i = STRING ... endfor' are now allowed. | |
| 71 | |
| 72 * It is now possible to set the iteration limit for lsode using | |
| 73 lsode_options ("step limit", N). | |
| 74 | |
| 75 * New functions: | |
| 76 | |
| 77 is_complex -- tell whether a variable is complex | |
| 78 rehash -- re-initialize the cache of directories in LOADPATH | |
| 79 graw -- send a string to the gnuplot subprocess | |
| 80 | |
| 81 * New functions from Kurt Hornik's Octave-ci package: | |
| 82 | |
| 83 In finance (new directory): | |
| 84 | |
| 85 fv -- future value of an investment | |
| 86 fvl -- future value of an initial lump sum investment | |
| 87 irr -- internal rate of return of an investment | |
| 88 nper -- number of payments needed for amortizing a loan | |
| 89 npv -- net present value of a series of payments | |
| 90 pmt -- amount of periodic payment needed to amortize a loan | |
| 91 pv -- present value of an investment | |
| 92 pvl -- present value of an investment that pays off at the end | |
| 93 rate -- rate of return of an investment | |
| 94 vol -- volatility of financial time series data | |
| 95 | |
| 96 In linear-algebra: | |
| 97 | |
| 98 dmult -- rescale the rows of a matrix | |
| 99 | |
| 100 In signal: | |
| 101 | |
| 102 arch_fit -- fit an ARCH regression model | |
| 103 arch_rnd -- simulate an ARCH process | |
| 104 arch_test -- test for conditional heteroscedascity | |
| 105 arma_rnd -- simulate an ARMA process | |
| 106 autocor -- compute autocorrelations | |
| 107 autocov -- compute autocovariances | |
| 108 autoreg_matrix -- design matrix for autoregressions | |
| 109 bartlett -- coefficients of the Bartlett (triangular) window | |
| 110 blackman -- coefficients of the Blackman window | |
| 111 diffpara -- estimate the fractional differencing parameter | |
| 112 durbinlevinson -- perform one step of the Durbin-Levinson algorithm | |
| 113 fractdiff -- compute fractional differences | |
| 114 hamming -- coefficients of the Hamming window | |
| 115 hanning -- coefficients of the Hanning window | |
| 116 hurst -- estimate the Hurst parameter | |
| 117 periodogram -- compute the periodogram | |
| 118 rectangle_lw -- rectangular lag window | |
| 119 rectangle_sw -- rectangular spectral window | |
| 120 sinetone -- compute a sine tone | |
| 121 sinewave -- compute a sine wave | |
| 122 spectral_adf -- spectral density estimation | |
| 123 spectral_xdf -- spectral density estimation | |
| 124 spencer -- apply Spencer's 15-point MA filter | |
| 125 stft -- short-term Fourier transform | |
| 126 synthesis -- recover a signal from its short-term Fourier transform | |
| 127 triangle_lw -- triangular lag window | |
| 128 triangle_sw -- triangular spectral window | |
| 129 yulewalker -- fit AR model by Yule-Walker method | |
| 130 | |
| 131 In statistics/base (new directory): | |
| 132 | |
| 133 center -- center by subtracting means | |
| 134 cloglog -- complementary log-log function | |
| 135 cor -- compute correlations | |
| 136 cov -- compute covariances | |
| 137 cut -- cut data into intervals | |
| 138 iqr -- interquartile range | |
| 139 kendall -- kendall's rank correlation tau | |
| 140 logit -- logit transformation | |
| 141 mean -- compute arithmetic, geometric, and harmonic mean | |
| 142 meansq -- compute mean square | |
| 143 moment -- compute moments | |
| 144 ppplot -- perform a PP-plot (probability plot) | |
| 145 probit -- probit transformation | |
| 146 qqplot -- perform a QQ-plot (quantile plot) | |
| 147 range -- compute range | |
| 148 ranks -- compute ranks | |
| 149 run_count -- count upward runs | |
| 150 spearman -- spearman's rank correlation rho | |
| 151 statistics -- compute basic statistics | |
| 152 studentize -- subtract mean and divide by standard deviation | |
| 153 table -- cross tabulation | |
| 154 values -- extract unique elements | |
| 155 var -- compute variance | |
| 156 | |
| 157 In statistics/distributions (new directory): | |
| 158 | |
| 159 beta_cdf -- CDF of the Beta distribution | |
| 160 beta_inv -- Quantile function of the Beta distribution | |
| 161 beta_pdf -- PDF of the Beta distribution | |
| 162 beta_rnd -- Random deviates from the Beta distribution | |
| 163 | |
| 164 binomial_cdf -- CDF of the binomial distribution | |
| 165 binomial_inv -- Quantile function of the binomial distribution | |
| 166 binomial_pdf -- PDF of the binomial distribution | |
| 167 binomial_rnd -- Random deviates from the binomial distribution | |
| 168 | |
| 169 cauchy_cdf -- CDF of the Cauchy distribution | |
| 170 cauchy_inv -- Quantile function of the Cauchy distribution | |
| 171 cauchy_pdf -- PDF of the Cauchy distribution | |
| 172 cauchy_rnd -- Random deviates from the Cauchy distribution | |
| 173 | |
| 174 chisquare_cdf -- CDF of the chi-square distribution | |
| 175 chisquare_inv -- Quantile function of the chi-square distribution | |
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176 chisquare_pdf -- PDF of the chi-square distribution |
| 5781 | 177 chisquare_rnd -- Random deviates from the chi-square distribution |
| 178 | |
| 179 discrete_cdf -- CDF of a discrete distribution | |
| 180 discrete_inv -- Quantile function of a discrete distribution | |
| 181 discrete_pdf -- PDF of a discrete distribution | |
| 182 discrete_rnd -- Random deviates from a discrete distribution | |
| 183 | |
| 184 empirical_cdf -- CDF of the empirical distribution | |
| 185 empirical_inv -- Quantile function of the empirical distribution | |
| 186 empirical_pdf -- PDF of the empirical distribution | |
| 187 empirical_rnd -- Bootstrap samples from the empirical distribution | |
| 188 | |
| 189 exponential_cdf -- CDF of the exponential distribution | |
| 190 exponential_inv -- Quantile function of the exponential distribution | |
| 191 exponential_pdf -- PDF of the exponential distribution | |
| 192 exponential_rnd -- Random deviates from the exponential distribution | |
| 193 | |
| 194 f_cdf -- CDF of the F distribution | |
| 195 f_inv -- Quantile function of the F distribution | |
| 196 f_pdf -- PDF of the F distribution | |
| 197 f_rnd -- Random deviates from the F distribution | |
| 198 | |
| 199 gamma_cdf -- CDF of the Gamma distribution | |
| 200 gamma_inv -- Quantile function of the Gamma distribution | |
| 201 gamma_pdf -- PDF of the Gamma distribution | |
| 202 gamma_rnd -- Random deviates from the Gamma distribution | |
| 203 | |
| 204 geometric_cdf -- CDF of the geometric distribution | |
| 205 geometric_inv -- Quantile function of the geometric distribution | |
| 206 geometric_pdf -- PDF of the geometric distribution | |
| 207 geometric_rnd -- Random deviates from the geometric distribution | |
| 208 | |
| 209 hypergeometric_cdf -- CDF of the hypergeometric distribution | |
| 210 hypergeometric_inv -- Random deviates from hypergeometric distribution | |
| 211 hypergeometric_pdf -- PDF of the hypergeometric distribution | |
| 212 hypergeometric_rnd -- Random deviates from hypergeometric distribution | |
| 213 | |
| 214 kolmogorov_smirnov_cdf -- CDF of the Kolmogorov-Smirnov distribution | |
| 215 | |
| 216 laplace_cdf -- CDF of the Laplace distribution | |
| 217 laplace_inv -- Quantile function of the Laplace distribution | |
| 218 laplace_pdf -- PDF of the Laplace distribution | |
| 219 laplace_rnd -- Random deviates from the Laplace distribution | |
| 220 | |
| 221 logistic_cdf -- CDF of the logistic distribution | |
| 222 logistic_inv -- Quantile function of the logistic distribution | |
| 223 logistic_pdf -- PDF of the logistic distribution | |
| 224 logistic_rnd -- Random deviates from the logistic distribution | |
| 225 | |
| 226 lognormal_cdf -- CDF of the log normal distribution | |
| 227 lognormal_inv -- Quantile function of the log normal distribution | |
| 228 lognormal_pdf -- PDF of the log normal distribution | |
| 229 lognormal_rnd -- Random deviates from the log normal distribution | |
| 230 | |
| 231 normal_cdf -- CDF of the normal distribution | |
| 232 normal_inv -- Quantile function of the normal distribution | |
| 233 normal_pdf -- PDF of the normal distribution | |
| 234 normal_rnd -- Random deviates from the normal distribution | |
| 235 | |
| 236 pascal_cdf -- CDF of the Pascal (negative binomial) distribution | |
| 237 pascal_inv -- Quantile function of the Pascal distribution | |
| 238 pascal_pdf -- PDF of the Pascal (negative binomial) distribution | |
| 239 pascal_rnd -- Random deviates from the Pascal distribution | |
| 240 | |
| 241 poisson_cdf -- CDF of the Poisson distribution | |
| 242 poisson_inv -- Quantile function of the Poisson distribution | |
| 243 poisson_pdf -- PDF of the Poisson distribution | |
| 244 poisson_rnd -- Random deviates from the Poisson distribution | |
| 245 | |
| 246 stdnormal_cdf -- CDF of the standard normal distribution | |
| 247 stdnormal_inv -- Quantile function of standard normal distribution | |
| 248 stdnormal_pdf -- PDF of the standard normal distribution | |
| 249 stdnormal_rnd -- Random deviates from standard normal distribution | |
| 250 | |
| 251 t_cdf -- CDF of the t distribution | |
| 252 t_inv -- Quantile function of the t distribution | |
| 253 t_pdf -- PDF of the t distribution | |
| 254 t_rnd -- Random deviates from the t distribution | |
| 255 | |
| 256 uniform_cdf -- CDF of the uniform distribution | |
| 257 uniform_inv -- Quantile function of the uniform distribution | |
| 258 uniform_pdf -- PDF of the uniform distribution | |
| 259 uniform_rnd -- Random deviates from the uniform distribution | |
| 260 | |
| 261 weibull_cdf -- CDF of the Weibull distribution | |
| 262 weibull_inv -- Quantile function of the Weibull distribution | |
| 263 weibull_pdf -- PDF of the Weibull distribution | |
| 264 weibull_rnd -- Random deviates from the Weibull distribution | |
| 265 | |
| 266 wiener_rnd -- Simulate a Wiener process | |
| 267 | |
| 268 In statistics/models (new directory): | |
| 269 | |
| 270 logistic_regression -- ordinal logistic regression | |
| 271 logistic_regression_derivatives -- derivates of log-likelihood | |
| 272 in logistic regression | |
| 273 logistic_regression_likelihood -- likelihood in logistic regression | |
| 274 | |
| 275 In statistics/tests (new directory): | |
| 276 | |
| 277 anova -- one-way analysis of variance | |
| 278 bartlett_test -- bartlett test for homogeneity of variances | |
| 279 chisquare_test_homogeneity -- chi-square test for homogeneity | |
| 280 chisquare_test_independence -- chi-square test for independence | |
| 281 cor_test -- test for zero correlation | |
| 282 f_test_regression -- test linear hypotheses in linear | |
| 283 regression model | |
| 284 hotelling_test -- test for mean of a multivariate normal | |
| 285 hotelling_test_2 -- compare means of two multivariate normals | |
| 286 kolmogorov_smirnov_test -- one-sample Kolmogorov-Smirnov test | |
| 287 kolmogorov_smirnov_test_2 -- two-sample Kolmogorov-Smirnov test | |
| 288 kruskal_wallis_test -- kruskal-Wallis test | |
| 289 manova -- one-way multivariate analysis of variance | |
| 290 mcnemar_test -- mcnemar's test for symmetry | |
| 291 prop_test_2 -- compare two proportions | |
| 292 run_test -- run test for independence | |
| 293 sign_test -- sign test | |
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294 t_test -- student's one-sample t test |
| 5781 | 295 t_test_2 -- student's two-sample t test |
| 296 t_test_regression -- test one linear hypothesis in linear | |
| 297 regression model | |
| 298 u_test -- mann-Whitney U-test | |
| 299 var_test -- f test to compare two variances | |
| 300 welch_test -- welch two-sample t test | |
| 301 wilcoxon_test -- wilcoxon signed-rank test | |
| 302 z_test -- test for mean of a normal sample with | |
| 303 known variance | |
| 304 z_test_2 -- compare means of two normal samples with | |
| 305 known variances | |
| 306 | |
| 307 * The save command now accepts the option -append to save the | |
| 308 variables at the end of the file, leaving the existing contents. | |
| 309 | |
| 310 * New command-line option --no-history (also available using the | |
| 311 single character option -H) inhibits saving command history. | |
| 312 | |
| 313 * The mkoctfile script now accepts -DDEF options and passes them on | |
| 314 to the C and C++ compilers. | |
| 315 | |
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316 * Running `make check' should work now before you run `make install', |
| 5781 | 317 even if you build a copy of Octave that depends on shared versions |
| 318 of the Octave libraries. | |
| 319 | |
| 320 * For matrices, x(:) now works and returns a column vector no matter | |
| 321 what the value of do_fortran_indexing is. | |
| 322 | |
| 323 * New keywords __FILE__ and __LINE__ expand to the name of the file | |
| 324 that is being read and the current input line number, respectively. | |
| 325 | |
| 326 * Octave's expression parser is more general and consistent. It is | |
| 327 now possible to access structure elements and index arbitrary | |
| 328 values. For example, expressions like | |
| 329 | |
| 330 my_home_dir = getpwuid (getuid ()) . dir; | |
| 331 | |
| 332 and | |
| 333 | |
| 334 svd (x) (1:5) | |
| 335 | |
| 336 now work. | |
| 337 | |
| 338 * New built-in variable `print_rhs_assign_val' controls what is | |
| 339 printed when an assignment expression is evaluated. If it is | |
| 340 zero, the value of the variable on the left hand side (after the | |
| 341 assignment) is printed. If it is nonzero, the value of the right | |
| 342 hand side (i.e., the result of the expression) is printed. The | |
| 343 default value of is zero, so the behavior is the same as in | |
| 344 previous versions of Octave. | |
| 345 | |
| 346 * tmpnam now takes two optional arguments, DIR, and PREFIX. For | |
| 347 example, tmpnam ("/foo", "bar-") returns a file name like | |
| 348 "/foo/bar-10773baa". If DIR is omitted or empty, the value of the | |
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349 environment variable TMPDIR, or /tmp is used. If PREFIX is |
| 5781 | 350 omitted, "oct-" is used. |
| 351 | |
| 352 * The built-in variable `PWD' has been removed. If you need to get | |
| 353 the value of the current working directory, use the pwd() function | |
| 354 instead. | |
| 355 | |
| 356 * New operators. Octave's parser now recognizes the following | |
| 357 operators: << >> += -= *= /= .+= .-= .*= ./= &= |= <<= >>=. So | |
| 358 far, there are only a few operations defined that actually use | |
| 359 them (this should change before 2.1 is released). | |
| 360 | |
| 361 * New built-in data types: | |
| 362 | |
| 363 logical: | |
| 364 | |
| 365 A true value is represented by 1, and false value by 0. | |
| 366 Comparison operations like <, <=, ==, >, >=, and != now return | |
| 367 logical values. Indexing operations that use zero-one style | |
| 368 indexing must now use logical values. You can use the new | |
| 369 function logical() to convert a numeric value to a logical | |
| 370 value. This avoids the need for the built-in variable | |
| 371 `prefer_zero_one_indexing', so it has been removed. Logical | |
| 372 values are automatically converted to numeric values where | |
| 373 appropriate. | |
| 374 | |
| 375 file: | |
| 376 | |
| 377 A file object represents an open Octave stream object. The | |
| 378 fopen function now returns a file object instead of an integer. | |
| 379 File objects can be converted to integers automatically, and the | |
| 380 other functions that work with file ids still work with | |
| 381 integers, so this change should be backward compatible. | |
| 382 | |
| 383 The binary left-shift operator `<<' has been defined to work as | |
| 384 in C++ for file objects and built-in types. For example, | |
| 385 | |
| 386 my_stream = fopen ("foo", "w"); | |
| 387 my_stream << "x = " << pi << " marks the spot\n"; | |
| 388 | |
| 389 writes `x = 3.1416 marks the spot' in the file foo. | |
| 390 | |
| 391 The built-in variables stdin, stdout, and stderr are now also | |
| 392 file objects instead of integers. | |
| 393 | |
| 394 list: | |
| 395 | |
| 396 A list is an array of Octave objects. It can be indexed using | |
| 397 the normal indexing operator. For example, | |
| 398 | |
| 399 x = list ([1,2;3,4], 1, "foo"); | |
| 400 stdout << x(2) << "\n" | |
| 401 1 | |
| 402 stdout << x; | |
| 403 ( | |
| 404 [1] = | |
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405 |
| 5781 | 406 1 2 |
| 407 3 4 | |
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408 |
| 5781 | 409 [2] = 1 |
| 410 [3] = foo | |
| 411 ) | |
| 412 | |
| 413 There is currently no special syntax for creating lists; you | |
| 414 must use the list function. | |
| 415 | |
| 416 * Commas in global statements are no longer special. They are now | |
| 417 treated as command separators. This removes a conflict in the | |
| 418 grammar and is consistent with the way Matlab behaves. The | |
| 419 variable `warn_comma_in_global_decl' has been eliminated. | |
| 420 | |
| 421 * It is now possible to declare static variables that retain their | |
| 422 values across function calls. For example, | |
| 423 | |
| 424 function ncall = f () static n = 0; ncall = ++n; endfunction | |
| 425 | |
| 426 defines a function that returns the number of times that it has | |
| 427 been called. | |
| 428 | |
| 429 * Within user-defined functions, the new automatic variable `argn' | |
| 430 contains the names of the arguments that were passed to the | |
| 431 function. For example, | |
| 432 | |
| 433 function f (...) | |
| 434 for i = 1:nargin | |
| 435 stdout << "argn(" << i << ") = `" << deblank (argn(i,:)) \ | |
| 436 << "' and its value is " << va_arg () << "\n"; | |
| 437 endfor | |
| 438 endfunction | |
| 439 f (1+2, "foo", sin (pi/2)) | |
| 440 | |
| 441 prints | |
| 442 | |
| 443 argn(1) = `1 + 2' and its value is 3 | |
| 444 argn(2) = `"foo"' and its value is foo | |
| 445 argn(3) = `sin (pi)' and its value is 1 | |
| 446 | |
| 447 on the standard output stream. If nargin is zero, argn is not defined. | |
| 448 * Functions like quad, fsolve, and lsode can take either a function | |
| 449 name or a simple function body as a string. For example, | |
| 450 | |
| 451 quad ("sqrt (x)", 0, 1) | |
| 452 | |
| 453 is equivalent to | |
| 454 | |
| 455 function y = f (x) y = sqrt (x); endfunction | |
| 456 quad ("f", 0, 1) | |
| 457 | |
| 458 * If the argument to eig() is symmetric, Octave uses the specialized | |
| 459 Lapack subroutine for symmetric matrices for a significant | |
| 460 increase in performance. | |
| 461 | |
| 462 * If the argument to lsode that names the user-supplied function is | |
| 463 a 2-element string array, the second element is taken as the name | |
| 464 of the Jacobian function. The named function should have the | |
| 465 following form: | |
| 466 | |
| 467 JAC = f (X, T) | |
| 468 | |
| 469 where JAC is the Jacobian matrix of partial derivatives of the | |
| 470 right-hand-side functions that define the set of differential | |
| 471 equations with respect to the state vector X. | |
| 472 | |
| 473 * Global variables are now initialized to the empty matrix, for | |
| 474 compatibility with Matlab. | |
| 475 | |
| 476 * Explicit initialization of global variables only happens once. | |
| 477 For example, after the following statements are evaluated, g still | |
| 478 has the value 1. | |
| 479 | |
| 480 global g = 1 | |
| 481 global g = 2 | |
| 482 | |
| 483 This is useful for initializing global variables that are used to | |
| 484 maintain state information that is shared among several functions. | |
| 485 | |
| 486 * Structure elements completion on the command line actually works | |
| 487 now. | |
| 488 | |
| 489 * The new built-in variable `fixed_point_format' controls whether | |
| 490 Octave uses a scaled fixed-point format for displaying matrices. | |
| 491 The default value is 0 unless you use --traditional. | |
| 492 | |
| 493 * The function sumsq now computes sum (x .* conj (x)) for complex values. | |
| 494 | |
| 495 * The new built-in variable max_recursion_depth allows you to | |
| 496 prevent Octave from attempting infinite recursion. The default | |
| 497 value is 256. | |
| 498 | |
| 499 * Octave now uses kpathsea 3.2. | |
| 500 | |
| 501 * New configure option, --enable-readline. | |
| 502 | |
| 503 * New configure option, --enable-static. | |
| 504 | |
| 505 Summary of changes for version 2.0.7: | |
| 506 ------------------------------------ | |
| 507 | |
| 508 This is a bug-fixing release. There are no new user-visible features. | |
| 509 | |
| 510 Summary of changes for version 2.0.6: | |
| 511 ------------------------------------ | |
| 512 | |
| 513 This is primarily a bug-fixing release. There are only a few new | |
| 514 user-visible features. | |
| 515 | |
| 516 * The new built-in variable default_eval_print_flag controls whether | |
| 517 Octave prints the results of commands executed by eval() that do | |
| 518 not end with semicolons. The default is 1. | |
| 519 | |
| 520 * The new built-in constant OCTAVE_HOME specifies the top-level | |
| 521 directory where Octave is installed. | |
| 522 | |
| 523 * Octave no longer includes functions to work with NPSOL or QPSOL, | |
| 524 because they are not free software. | |
| 525 | |
| 526 * The new built-in variable called kluge_procbuf_delay specifies the | |
| 527 number of microseconds to delay in the parent process after | |
| 528 forking. By default on gnu-win32 systems, it's set to 500000 (1/2 | |
| 529 second). On other systems, the default value is 0. Delaying for | |
| 530 a short time in the parent after forking seems to avoid problems | |
| 531 in which communicating with subprocesses via pipes would sometimes | |
| 532 cause Octave to hang. I doubt that the delay is really the right | |
| 533 solution. If anyone has a better idea, I'd love to hear it. | |
| 534 | |
| 535 Summary of changes for version 2.0.5: | |
| 536 ------------------------------------ | |
| 537 | |
| 538 * A `switch' statement is now available. See the Statements chapter | |
| 539 in the manual for details. | |
| 540 | |
| 541 * Commands like ls, save, and cd may now also be used as formal | |
| 542 parameters for functions. | |
| 543 | |
| 544 * More tests. | |
| 545 | |
| 546 Summary of changes for version 2.0.4: | |
| 547 ------------------------------------ | |
| 548 | |
| 549 * It is now possible to use commands like ls, save, and cd as simple | |
| 550 variable names. They still cannot be used as formal parameters | |
| 551 for functions, or as the names of structure variables. Failed | |
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552 assignments leave them undefined (you can recover the original |
| 5781 | 553 function definition using clear). |
| 554 | |
| 555 * Is is now possible to invoke commands like ls, save, and cd as | |
| 556 normal functions (for example, load ("foo", "x", "y", "z")). | |
| 557 | |
| 558 Summary of changes for version 2.0.3: | |
| 559 ------------------------------------ | |
| 560 | |
| 561 * The manual has been completely revised and now corresponds much | |
| 562 more closely to the features of the current version. | |
| 563 | |
| 564 * The return value for assignment expressions is now the RHS since | |
| 565 that is more consistent with the way other programming languages | |
| 566 work. However, Octave still prints the entire LHS value so that | |
| 567 | |
| 568 x = zeros (1, 2); | |
| 569 x(2) = 1 | |
| 570 | |
| 571 still prints | |
| 572 | |
| 573 x = | |
| 574 | |
| 575 0 1 | |
| 576 | |
| 577 but an assignment like | |
| 578 | |
| 579 z = x(2) = 1 | |
| 580 | |
| 581 sets z to 1 (not [ 0, 1 ] as in previous versions of Octave). | |
| 582 | |
| 583 * It is now much easier to make binary distributions. See the | |
| 584 Binary Distributions section of the manual for more details. | |
| 585 | |
| 586 Summary of changes for version 2.0.2: | |
| 587 ------------------------------------ | |
| 588 | |
| 589 * Octave now stops executing commands from a script file if an error | |
| 590 is encountered. | |
| 591 | |
| 592 * The return, and break commands now cause Octave to quit executing | |
| 593 commands from script files. When used in invalid contexts, the | |
| 594 break, continue, and return commands are now simply ignored | |
| 595 instead of producing parse errors. | |
| 596 | |
| 597 * size ("") is now [0, 0]. | |
| 598 | |
| 599 * New functions: | |
| 600 | |
| 601 sleep -- pause execution for a specified number of seconds | |
| 602 usleep -- pause execution for a specified number of microseconds | |
| 603 | |
| 604 Summary of changes for version 2.0: | |
| 605 ---------------------------------- | |
| 606 | |
| 607 * The set and show commands for setting and displaying gnuplot | |
| 608 parameters have been replaced by gset and gshow. This change will | |
| 609 probably break lots of things, but it is necessary to allow for | |
| 610 compatibility with the Matlab graphics and GUI commands in a | |
| 611 future version of Octave. (For now, the old set and show commands | |
| 612 do work, but they print an annoying warning message to try to get | |
| 613 people to switch to using gset.) | |
| 614 | |
| 615 * Octave has been mostly ported to Windows NT and Windows 95 using | |
| 616 the beta 17 release of the Cygnus GNU-WIN32 tools. Not everything | |
| 617 works, but it is usable. See the file README.WINDOWS for more | |
| 618 information. | |
| 619 | |
| 620 * Dynamic linking works on more systems using dlopen() and friends | |
| 621 (most modern Unix systems) or shl_load() and friends (HP/UX | |
| 622 systems). A simple example is provided in examples/hello.cc. | |
| 623 For this feature to work, you must configure Octave with | |
| 624 --enable-shared. You may also need to have a shared-library | |
| 625 version of libg++ and libstdc++. | |
| 626 | |
| 627 * New data types can be added to Octave by writing a C++ class. On | |
| 628 systems that support dynamic linking, new data types can be added | |
| 629 to an already running Octave binary. A simple example appears in | |
| 630 the file examples/make_int.cc. Other examples are the standard | |
| 631 Octave data types defined in the files src/ov*.{h,cc} and | |
| 632 src/op-*.cc. | |
| 633 | |
| 634 * The configure option --enable-bounds-check turns on bounds | |
| 635 checking on element references for Octave's internal array and | |
| 636 matrix classes. It's enabled by default. To disable this | |
| 637 feature, configure Octave with --disable-bounds-check. | |
| 638 | |
| 639 * The C-style I/O functions (fopen, fprintf, etc.) have been | |
| 640 rewritten to be more compatible with Matlab. The fputs function | |
| 641 has also been added. Usage of the *printf functions that was | |
| 642 allowed in previous versions of Octave should still work. | |
| 643 However, there is no way to make the new versions of the *scanf | |
| 644 functions compatible with Matlab *and* previous versions of | |
| 645 Octave. An optional argument to the *scanf functions is now | |
| 646 available to make them behave in a way that is compatible with | |
| 647 previous versions of Octave. | |
| 648 | |
| 649 * Octave can now read files that contain columns of numbers only, | |
| 650 with no header information. The name of the loaded variable is | |
| 651 constructed from the file name. Each line in the file must have | |
| 652 the same number of elements. | |
| 653 | |
| 654 * The interface to the pager has changed. The new built-in variable | |
| 655 `page_output_immediately' controls when Octave sends output to the | |
| 656 pager. If it is nonzero, Octave sends output to the pager as soon | |
| 657 as it is available. Otherwise, Octave buffers its output and | |
| 658 waits until just before the prompt is printed to flush it to the | |
| 659 pager. | |
| 660 | |
| 661 * Expressions of the form | |
| 662 | |
| 663 A(i,j) = x | |
| 664 | |
| 665 where X is a scalar and the indices i and j define a matrix of | |
| 666 elements now work as you would expect rather than giving an error. | |
| 667 I am told that this is how Matlab 5.0 will behave when it is | |
| 668 released. | |
| 669 | |
| 670 * Indexing of character strings now works. | |
| 671 | |
| 672 * The echo command has been implemented. | |
| 673 | |
| 674 * The document command is now a regular function. | |
| 675 | |
| 676 * New method for handling errors: | |
| 677 | |
| 678 try | |
| 679 BODY | |
| 680 catch | |
| 681 CLEANUP | |
| 682 end_try_catch | |
| 683 | |
| 684 Where BODY and CLEANUP are both optional and may contain any | |
| 685 Octave expressions or commands. The statements in CLEANUP are | |
| 686 only executed if an error occurs in BODY. | |
| 687 | |
| 688 No warnings or error messages are printed while BODY is | |
| 689 executing. If an error does occur during the execution of BODY, | |
| 690 CLEANUP can access the text of the message that would have been | |
| 691 printed in the builtin constant __error_text__. This is the same | |
| 692 as eval (TRY, CATCH) (which may now also use __error_text__) but | |
| 693 it is more efficient since the commands do not need to be parsed | |
| 694 each time the TRY and CATCH statements are evaluated. | |
| 695 | |
| 696 * Octave no longer parses the help command by grabbing everything | |
| 697 after the keyword `help' until a newline character is read. To | |
| 698 get help for `;' or `,', now, you need to use the command | |
| 699 `help semicolon' or `help comma'. | |
| 700 | |
| 701 * Octave's parser now does some simple constant folding. This means | |
| 702 that expressions like 3*i are now evaluated only once, when a | |
| 703 function is compiled, and the right hand side of expressions like | |
| 704 a = [1,2;3,4] are treated as true matrix constants rather than | |
| 705 lists of elements which must be evaluated each time they are | |
| 706 needed. | |
| 707 | |
| 708 * Built-in variables that can take values of "true" and "false" can | |
| 709 now also be set to any nonzero scalar value to indicate "true", | |
| 710 and 0 to indicate "false". | |
| 711 | |
| 712 * New built-in variables `history_file', `history_size', and | |
| 713 `saving_history'. | |
| 714 | |
| 715 * New built-in variable `string_fill_char' specifies the character | |
| 716 to fill with when creating arrays of strings. | |
| 717 | |
| 718 * If the new built-in variable `gnuplot_has_frames' is nonzero, | |
| 719 Octave assumes that your copy of gnuplot includes support for | |
| 720 multiple plot windows when using X11. | |
| 721 | |
| 722 If the new built-in variable `gnuplot_has_multiplot' is nonzero, | |
| 723 Octave assumes that your copy of gnuplot has the multiplot support | |
| 724 that is included in recent 3.6beta releases. | |
| 725 | |
| 726 The initial values of these variables are determined by configure, | |
| 727 but can be changed in your startup script or at the command line | |
| 728 in case configure got it wrong, or if you upgrade your gnuplot | |
| 729 installation. | |
| 730 | |
| 731 * The new plot function `figure' allows multiple plot windows when | |
| 732 using newer versions of gnuplot with X11. | |
| 733 | |
| 734 * Octave now notices when the plotter has exited unexpectedly. | |
| 735 | |
| 736 * New built-in variable `warn_missing_semicolon'. If nonzero, Octave | |
| 737 will warn when statements in function definitions don't end in | |
| 738 semicolons. The default value is 0. | |
| 739 | |
| 740 * Octave now attempts to continue after floating point exceptions | |
| 741 or out-of-memory errors. | |
| 742 | |
| 743 * If Octave crashes, it now attempts to save all user-defined | |
| 744 variables in a file named `octave-core' in the current directory | |
| 745 before exiting. | |
| 746 | |
| 747 * It is now possible to get the values of individual option settings | |
| 748 for the dassl, fsolve, lsode, npsol, qpsol, and quad functions | |
| 749 using commands like | |
| 750 | |
| 751 dassl_reltol = dassl_options ("relative tolerance"); | |
| 752 | |
| 753 * The svd() function no longer computes the left and right singular | |
| 754 matrices unnecessarily. This can significantly improve | |
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755 performance for large matrices if you are just looking for the |
| 5781 | 756 singular values. |
| 757 | |
| 758 * The filter() function is now a built-in function. | |
| 759 | |
| 760 * New function randn() returns a pseudo-random number from a normal | |
| 761 distribution. The rand() and randn() functions have separate | |
| 762 seeds and generators. | |
| 763 | |
| 764 * Octave's command-line arguments are now available in the built-in | |
| 765 variable `argv'. The program name is also available in the | |
| 766 variables `program_invocation_name' and `program_name'. If | |
| 767 executing a script from the command line (e.g., octave foo.m) or | |
| 768 using the `#! /bin/octave' hack, the program name is set to the | |
| 769 name of the script. | |
| 770 | |
| 771 * New built-in variable `completion_append_char' used as the | |
| 772 character to append to successful command-line completion | |
| 773 attempts. The default is " " (a single space). | |
| 774 | |
| 775 * Octave now uses a modified copy of the readline library from | |
| 776 version 1.14.5 of GNU bash. | |
| 777 | |
| 778 * In prompt strings, `\H' expands to the whole host name. | |
| 779 | |
| 780 * New built-in variable `beep_on_error'. If nonzero, Octave will try | |
| 781 to ring your terminal's bell before printing an error message. | |
| 782 The default value is 0. | |
| 783 | |
| 784 * For functions defined from files, the type command now prints the | |
| 785 text of the file. You can still get the text reconstructed from | |
| 786 the parse tree by using the new option -t (-transformed). | |
| 787 | |
| 788 * New command-line argument --traditional sets the following | |
| 789 preference variables for compatibility with Matlab: | |
| 790 | |
| 791 PS1 = ">> " | |
| 792 PS2 = "" | |
| 793 beep_on_error = 1 | |
| 794 default_save_format = "mat-binary" | |
| 795 define_all_return_values = 1 | |
| 796 do_fortran_indexing = 1 | |
| 797 empty_list_elements_ok = 1 | |
| 798 implicit_str_to_num_ok = 1 | |
| 799 ok_to_lose_imaginary_part = 1 | |
| 800 page_screen_output = 0 | |
| 801 prefer_column_vectors = 0 | |
| 802 prefer_zero_one_indexing = 1 | |
| 803 print_empty_dimensions = 0 | |
| 804 treat_neg_dim_as_zero = 1 | |
| 805 warn_function_name_clash = 0 | |
| 806 whitespace_in_literal_matrix = "traditional" | |
| 807 | |
| 808 * New functions: | |
| 809 | |
| 810 readdir -- returns names of files in directory as array of strings | |
| 811 mkdir -- create a directory | |
| 812 rmdir -- remove a directory | |
| 813 rename -- rename a file | |
| 814 unlink -- delete a file | |
| 815 umask -- set permission mask for file creation | |
| 816 stat -- get information about a file | |
| 817 lstat -- get information about a symbolic link | |
| 818 glob -- perform filename globbing | |
| 819 fnmatch -- match strings with filename globbing patterns | |
| 820 more -- turn the pager on or off | |
| 821 gammaln -- alias for lgamma | |
| 822 | |
| 823 * New audio functions from Andreas Weingessel | |
| 824 <Andreas.Weingessel@ci.tuwien.ac.at>. | |
| 825 | |
| 826 lin2mu -- linear to mu-law encoding | |
| 827 loadaudio -- load an audio file to a vector | |
| 828 mu2lin -- mu-law to linear encoding | |
| 829 playaudio -- play an audio file | |
| 830 record -- record sound and store in vector | |
| 831 saveaudio -- save a vector as an audio file | |
| 832 setaudio -- executes mixer shell command | |
| 833 | |
| 834 * New plotting functions from Vinayak Dutt. Ones dealing with | |
| 835 multiple plots on one page require features from gnuplot 3.6beta | |
| 836 (or later). | |
| 837 | |
| 838 bottom_title -- put title at the bottom of the plot | |
| 839 mplot -- multiplot version of plot | |
| 840 multiplot -- switch multiple-plot mode on or off | |
| 841 oneplot -- return to one plot per page | |
| 842 plot_border -- put a border around plots | |
| 843 subplot -- position multiple plots on a single page | |
| 844 subwindow -- set subwindow position for next plot | |
| 845 top_title -- put title at the top of the plot | |
| 846 zlabel -- put a label on the z-axis | |
| 847 | |
| 848 * New string functions | |
| 849 | |
| 850 bin2dec -- convert a string of ones and zeros to an integer | |
| 851 blanks -- create a string of blanks | |
| 852 deblank -- delete trailing blanks | |
| 853 dec2bin -- convert an integer to a string of ones and zeros | |
| 854 dec2hex -- convert an integer to a hexadecimal string | |
| 855 findstr -- locate occurrences of one string in another | |
| 856 hex2dec -- convert a hexadecimal string to an integer | |
| 857 index -- return position of first occurrence a string in another | |
| 858 rindex -- return position of last occurrence a string in another | |
| 859 split -- divide one string into pieces separated by another | |
| 860 str2mat -- create a string matrix from a list of strings | |
| 861 strrep -- replace substrings in a string | |
| 862 substr -- extract a substring | |
| 863 | |
| 864 The following functions return a matrix of ones and zeros. | |
| 865 Elements that are nonzero indicate that the condition was true for | |
| 866 the corresponding character in the string array. | |
| 867 | |
| 868 isalnum -- letter or a digit | |
| 869 isalpha -- letter | |
| 870 isascii -- ascii | |
| 871 iscntrl -- control character | |
| 872 isdigit -- digit | |
| 873 isgraph -- printable (but not space character) | |
| 874 islower -- lower case | |
| 875 isprint -- printable (including space character) | |
| 876 ispunct -- punctuation | |
| 877 isspace -- whitespace | |
| 878 isupper -- upper case | |
| 879 isxdigit -- hexadecimal digit | |
| 880 | |
| 881 These functions return new strings. | |
| 882 | |
| 883 tolower -- convert to lower case | |
| 884 toupper -- convert to upper case | |
| 885 | |
| 886 * New function, fgetl. Both fgetl and fgets accept an optional | |
| 887 second argument that specifies a maximum number of characters to | |
| 888 read, and the function fgets is now compatible with Matlab. | |
| 889 | |
| 890 * Printing in hexadecimal format now works (format hex). It is also | |
| 891 possible to print the internal bit representation of a value | |
| 892 (format bit). Note that these formats are only implemented for | |
| 893 numeric values. | |
| 894 | |
| 895 * Additional structure features: | |
| 896 | |
| 897 -- Name completion now works for structures. | |
| 898 | |
| 899 -- Values and names of structure elements are now printed by | |
| 900 default. The new built-in variable `struct_levels_to_print' | |
| 901 controls the depth of nested structures to print. The default | |
| 902 value is 2. | |
| 903 | |
| 904 -- New functions: | |
| 905 | |
| 906 struct_contains (S, NAME) -- returns 1 if S is a structure with | |
| 907 element NAME; otherwise returns 0. | |
| 908 | |
| 909 struct_elements (S) -- returns the names of all elements | |
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910 of structure S in an array of strings. |
| 5781 | 911 |
| 912 * New io/subprocess functions: | |
| 913 | |
| 914 fputs -- write a string to a file with no formatting | |
| 915 popen2 -- start a subprocess with 2-way communication | |
| 916 mkfifo -- create a FIFO special file | |
| 917 popen -- open a pipe to a subprocess | |
| 918 pclose -- close a pipe from a subprocess | |
| 919 waitpid -- check the status of or wait for subprocesses | |
| 920 | |
| 921 * New time functions: | |
| 922 | |
| 923 asctime -- format time structure according to local format | |
| 924 ctime -- equivalent to `asctime (localtime (TMSTRUCT))' | |
| 925 gmtime -- return time structure corresponding to UTC | |
| 926 localtime -- return time structure corresponding to local time zone | |
| 927 strftime -- print given time structure using specified format | |
| 928 time -- return current time | |
| 929 | |
| 930 The `clock' and `date' functions are now implemented in M-files | |
| 931 using these basic functions. | |
| 932 | |
| 933 * Access to additional Unix system calls: | |
| 934 | |
| 935 dup2 -- duplicate a file descriptor | |
| 936 exec -- replace current process with a new process | |
| 937 fcntl -- control open file descriptors | |
| 938 fork -- create a copy of the current process | |
| 939 getpgrp -- return the process group id of the current process | |
| 940 getpid -- return the process id of the current process | |
| 941 getppid -- return the process id of the parent process | |
| 942 getuid -- return the real user id of the current process | |
| 943 getgid -- return the real group id of the current process | |
| 944 geteuid -- return the effective user id of the current process | |
| 945 getegid -- return the effective group id of the current process | |
| 946 pipe -- create an interprocess channel | |
| 947 | |
| 948 * Other new functions: | |
| 949 | |
| 950 commutation_matrix -- compute special matrix form | |
| 951 duplication_matrix -- compute special matrix form | |
| 952 common_size.m -- bring arguments to a common size | |
| 953 completion_matches -- perform command completion on string | |
| 954 tilde_expand -- perform tilde expansion on string | |
| 955 | |
| 956 meshgrid -- compatible with Matlab's meshgrid function | |
| 957 tmpnam -- replaces octave_tmp_file_name | |
| 958 atexit -- register functions to be called when Octave exits | |
| 959 putenv -- define an environment variable | |
| 960 bincoeff -- compute binomial coefficients | |
| 961 nextpow2 -- compute the next power of 2 greater than a number | |
| 962 detrend -- remove a best fit polynomial from data | |
| 963 erfinv -- inverse error function | |
| 964 shift -- perform a circular shift on the elements of a matrix | |
| 965 pow2 -- compute 2 .^ x | |
| 966 log2 -- compute base 2 logarithms | |
| 967 diff -- compute differences of matrix elements | |
| 968 vech -- stack columns of a matrix below the diagonal | |
| 969 vec -- stack columns of a matrix to form a vector | |
| 970 xor -- compute exclusive or | |
| 971 | |
| 972 * Functions for getting info from the password database on Unix systems: | |
| 973 | |
| 974 getpwent -- read entry from password-file stream, opening if necessary | |
| 975 getpwuid -- search for password entry with matching user ID | |
| 976 getpwnam -- search for password entry with matching username | |
| 977 setpwent -- rewind the password-file stream | |
| 978 endpwent -- close the password-file stream | |
| 979 | |
| 980 * Functions for getting info from the group database on Unix systems: | |
| 981 | |
| 982 getgrent -- read entry from group-file stream, opening if necessary | |
| 983 getgrgid -- search for group entry with matching group ID | |
| 984 getgrnam -- search for group entry with matching group name | |
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985 setgrent -- rewind the group-file stream |
| 5781 | 986 endgrent -- close the group-file stream |
| 987 | |
| 988 * The New function octave_config_info returns a structure containing | |
| 989 information about how Octave was configured and compiled. | |
| 990 | |
| 991 * New function getrusage returns a structure containing system | |
| 992 resource usage statistics. The `cputime' function is now defined | |
| 993 in an M-file using getrusage. | |
| 994 | |
| 995 * The info reader is now a separate binary that runs as a | |
| 996 subprocess. You still need the info reader distributed with | |
| 997 Octave though, because there are some new command-line arguments | |
| 998 that are not yet available in the public release of Info. | |
| 999 | |
| 1000 * There is a new built-in variable, INFO_PROGRAM, which is used as | |
| 1001 the name of the info program to run. Its initial value is | |
| 1002 $OCTAVE_HOME/lib/octave/VERSION/exec/ARCH/info, but that value can | |
| 1003 be overridden by the environment variable OCTAVE_INFO_PROGRAM, or | |
| 1004 the command line argument --info-program NAME, or by setting the | |
| 1005 value of INFO_PROGRAM in a startup script. | |
| 1006 | |
| 1007 * There is a new built-in variable, EXEC_PATH, which is used as | |
| 1008 the list of directories to search when executing subprograms. Its | |
| 1009 initial value is taken from the environment variable | |
| 1010 OCTAVE_EXEC_PATH (if it exists) or PATH, but that value can be | |
| 6653 | 1011 overridden by the command line argument --exec-path PATH, or |
| 5781 | 1012 by setting the value of EXEC_PATH in a startup script. If the |
| 1013 EXEC_PATH begins (ends) with a colon, the directories | |
| 1014 $OCTAVE_HOME/lib/octave/VERSION/exec/ARCH and $OCTAVE_HOME/bin are | |
| 1015 prepended (appended) to EXEC_PATH (if you don't specify a value | |
| 1016 for EXEC_PATH explicitly, these special directories are prepended | |
| 1017 to your PATH). | |
| 1018 | |
| 1019 * If it is present, Octave will now use an `ls-R' database file to | |
| 1020 speed up recursive path searching. Octave looks for a file called | |
| 1021 ls-R in the directory specified by the environment variable | |
| 1022 OCTAVE_DB_DIR. If that is not set but the environment variable | |
| 1023 OCTAVE_HOME is set, Octave looks in $OCTAVE_HOME/lib/octave. | |
| 1024 Otherwise, Octave looks in the directory $datadir/octave (normally | |
| 1025 /usr/local/lib/octave). | |
| 1026 | |
| 1027 * New examples directory. | |
| 1028 | |
| 1029 * There is a new script, mkoctfile, that can be used to create .oct | |
| 1030 files suitable for dynamic linking. | |
| 1031 | |
| 1032 * Many more bug fixes. | |
| 1033 | |
| 1034 * ChangeLogs are now kept in each subdirectory. | |
| 1035 | |
| 1036 See NEWS.1 for old news. |