Mercurial > hg > octave-lyh
annotate NEWS @ 16260:6c211b8cfbd9 classdef
maint: periodic merge of default to classdef
author | John W. Eaton <jwe@octave.org> |
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date | Mon, 11 Mar 2013 14:25:38 -0400 |
parents | 3a93af21d206 |
children | 45916132522a |
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1 Summary of important user-visible changes for version 4.0: |
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2 --------------------------------------------------------- |
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3 |
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4 ** A new GUI is now available with Octave. |
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5 |
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6 ** Warning states may now be set temporarily, until the end of the |
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7 current function, using the syntax |
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8 |
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9 warning STATE ID "local" |
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10 |
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11 in which STATE may be "on", "off", or "error". Changes to warning |
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12 states that are set locally affect the current function and all |
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13 functions called from the current scope. The previous warning state |
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14 is restored on return from the current function. The "local" |
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15 option is ignored if used in the top-level workspace. |
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16 |
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17 Summary of important user-visible changes for version 3.8: |
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18 --------------------------------------------------------- |
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19 |
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20 ** Octave now supports nested functions with scoping rules that are |
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21 compatible with Matlab. A nested function is one declared and defined |
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22 within the body of another function. The nested function is only |
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23 accessible from within the enclosing function which makes it one |
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24 method for making private functions whose names do not conflict with those |
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25 in the global namespace (See also subfunctions and private functions). |
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26 In addition, variables in the enclosing function are visible within the |
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27 nested function. This makes it possible to have a pseudo-global variable |
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28 which can be seen by a group of functions, but which is not visible in |
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29 the global namespace. |
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30 |
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31 Example: |
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32 function outerfunc (...) |
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33 ... |
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34 function nested1 (...) |
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35 ... |
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36 function nested2 (...) |
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37 ... |
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38 endfunction |
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39 endfunction |
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40 |
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41 function nested3 (...) |
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42 ... |
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43 endfunction |
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44 endfunction |
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45 |
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46 ** 'emptymatch', 'noemptymatch' options added to regular expressions. |
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47 |
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48 With this addition Octave now accepts the entire set of Matlab options |
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49 for regular expressions. 'noemptymatch' is the default, but 'emptymatch' |
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50 has certain uses where you need to match an assertion rather than actual |
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51 characters. For example, |
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52 |
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53 regexprep ('World', '^', 'Hello ', 'emptymatch') |
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54 => Hello World |
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55 |
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56 where the pattern is actually the assertion '^' or start-of-line. |
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57 |
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58 ** For compatibility with Matlab, the regexp, regexpi, and regexprep |
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59 functions now process backslash escape sequences in single-quoted pattern |
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60 strings. In addition, the regexprep function now processes backslash |
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61 escapes in single-quoted replacement strings. For example, |
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62 |
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63 regexprep (str, '\t', '\n') |
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64 |
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65 would search the variable str for a TAB character (escape sequence \t) |
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66 and replace it with a NEWLINE (escape sequence \n). Previously the |
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67 expression would have searched for a literal '\' followed by 't' and |
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68 replaced the two characters with the sequence '\', 'n'. |
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69 |
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70 ** Redundant terminal comma accepted by parser |
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71 |
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72 A redundant terminal comma is now accepted in matrix |
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73 definitions which allows writing code such as |
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74 |
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75 [a,... |
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76 b,... |
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77 c,... |
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78 ] = deal (1,2,3) |
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79 |
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80 ** Warning IDs renamed: |
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81 |
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82 Octave:array-as-scalar => Octave:array-to-scalar |
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83 Octave:array-as-vector => Octave:array-to-vector |
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84 |
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85 ** The colormap function now provides new options--"list", "register", |
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86 and "unregister"--to list all available colormap functions, and to |
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87 add or remove a function name from the list of known colormap |
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88 functions. Packages that implement extra colormaps should use these |
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89 commands with PKG_ADD and PKG_DEL statements. |
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90 |
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91 ** The m-files in the image directory have been overhauled. |
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92 |
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93 The principal benefit is that Octave will now no longer automatically |
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94 convert images stored with integers to doubles. Storing images as uint8 |
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95 or uint16 requires only 1/8 or 1/4 the memory of an image stored using |
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96 doubles. For certain operations, such as fft2, the image must still be |
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97 converted to double in order to work. |
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98 |
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99 Other changes include fixes to the way indexed images are read from a |
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100 colormap depending on the image class (integer images have a -1 offset to |
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101 the colormap row number). |
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102 |
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103 ** The datevec function has been extended for better Matlab compatibility. |
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104 It now accepts string inputs in the following numerical formats: 12, 21, |
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105 22, 26, 29, 31. This is undocumented, but verifiable, Matlab behavior. |
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106 In addition, the default for formats which do not specify a date is |
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107 January 1st of the current year. The previous default was the current day, |
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108 month, and year. This may produce changes in existing scripts. |
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109 |
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110 ** The error function and its derivatives has been extended to accept complex |
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111 arguments. The following functions now accept complex inputs: |
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113 erf erfc erfcx |
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114 |
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115 In addition two new error functions erfi (imaginary error function) and |
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116 dawson (scaled imaginary error function) have been added. |
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117 |
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119 octave-workspace instead of octave-core. |
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120 |
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122 following new functions are available for interacting with Java |
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123 directly from Octave: |
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124 |
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125 java java_invoke |
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126 java2mat java_new |
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127 javaArray java_set |
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128 javaMethod java_unsigned_conversion |
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129 javaObject javaaddpath |
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130 java_convert_matrix javaclasspath |
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131 java_debug javafields |
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132 java_exit javamem |
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133 java_get javamethods |
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134 java_init javarmpath |
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135 |
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136 In addition, the following functions that use the Java interface |
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137 are now available (provided that Octave is compiled with support for |
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138 Java enabled): |
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139 |
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140 helpdlg listdlg questdlg |
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141 inputdlg msgbox warndlg |
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142 |
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143 ** Other new functions added in 3.8.0: |
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144 |
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145 betaincinv dawson fminsearch polyeig tetramesh |
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146 cmpermute erfcinv importdata rgbplot |
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147 cmunique erfi iscolormap shrinkfaces |
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148 colorcube findfigs lines splinefit |
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149 |
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150 ** Deprecated functions. |
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151 |
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152 The following functions were deprecated in Octave 3.4 and have been |
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153 removed from Octave 3.8. |
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154 |
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155 autocor dispatch is_global strerror |
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156 autocov fstat krylovb values |
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157 betai gammai perror |
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158 cellidx glpkmex replot |
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159 cquad is_duplicate_entry saveimage |
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160 |
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161 The following functions have been deprecated in Octave 3.8 and will |
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162 be removed from Octave 3.12 (or whatever version is the second major |
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163 release after 3.8): |
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164 |
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165 <none yet> |
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166 |
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167 The following keywords have been deprecated in Octave 3.8 and will |
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168 be removed from Octave 3.12 (or whatever version is the second major |
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169 release after 3.8): |
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170 |
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171 static |
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172 |
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173 The following configuration variables have been deprecated in Octave |
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174 3.8 and will be removed from Octave 3.12 (or whatever version is the |
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175 second major release after 3.8): |
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176 |
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177 CC_VERSION (now GCC_VERSION) |
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178 CXX_VERSION (now GXX_VERSION) |
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179 |
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180 ** A citation command has been added to display information on how to |
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181 cite Octave and packages in publications. The package system will |
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182 look for and install CITATION files from packages. |
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183 |
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184 Summary of important user-visible changes for version 3.6: |
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185 --------------------------------------------------------- |
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186 |
14188 | 187 ** The PCRE library is now required to build Octave. If a pre-compiled |
188 package does not exist for your system, you can find PCRE sources | |
189 at http://www.pcre.org | |
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190 |
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191 ** The ARPACK library is no longer distributed with Octave. |
14188 | 192 If you need the eigs or svds functions you must provide an |
193 external ARPACK through a package manager or by compiling it | |
194 yourself. If a pre-compiled package does not exist for your system, | |
195 you can find the current ARPACK sources at | |
196 http://forge.scilab.org/index.php/p/arpack-ng | |
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197 |
14082 | 198 ** Many of Octave's binary operators (.*, .^, +, -, ...) now perform |
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199 automatic broadcasting for array operations which allows you to use |
14082 | 200 operator notation instead of calling bsxfun or expanding arrays (and |
201 unnecessarily wasting memory) with repmat or similar idioms. For | |
202 example, to scale the columns of a matrix by the elements of a row | |
203 vector, you may now write | |
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204 |
14082 | 205 rv .* M |
206 | |
207 In this expression, the number of elements of rv must match the | |
208 number of columns of M. The following operators are affected: | |
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209 |
14082 | 210 plus + .+ |
211 minus - .- | |
212 times .* | |
213 rdivide ./ | |
214 ldivide .\ | |
215 power .^ .** | |
216 lt < | |
217 le <= | |
218 eq == | |
219 gt > | |
220 ge >= | |
221 ne != ~= | |
222 and & | |
223 or | | |
224 atan2 | |
225 hypot | |
226 max | |
227 min | |
228 mod | |
229 rem | |
230 xor | |
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231 |
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232 additionally, since the A op= B assignment operators are equivalent |
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234 |
14082 | 235 += -= .+= .-= .*= ./= .\= .^= .**= &= |= |
236 | |
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237 See the "Broadcasting" section in the new "Vectorization and Faster |
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238 Code Execution" chapter of the manual for more details. |
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239 |
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240 ** Octave now features a profiler, thanks to the work of Daniel Kraft |
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241 under the Google Summer of Code mentorship program. The manual has |
13262 | 242 been updated to reflect this addition. The new user-visible |
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243 functions are profile, profshow, and profexplore. |
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244 |
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245 ** Overhaul of statistical distribution functions |
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246 |
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247 Functions now return "single" outputs for inputs of class "single". |
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248 |
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249 75% reduction in memory usage through use of logical indexing. |
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250 |
14188 | 251 Random sample functions now use the same syntax as rand and accept |
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252 a comma separated list of dimensions or a dimension vector. |
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253 |
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254 Functions have been made Matlab-compatible with regard to special |
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255 cases (probability on boundaries, probabilities for values outside |
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256 distribution, etc.). This may cause subtle changes to existing |
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257 scripts. |
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258 |
14188 | 259 negative binomial function has been extended to real, non-integer |
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260 inputs. The discrete_inv function now returns v(1) for 0 instead of |
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261 NaN. The nbincdf function has been recoded to use a closed form |
14188 | 262 solution with betainc. |
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263 |
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264 ** strread, textscan, and textread have been completely revamped. |
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265 |
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266 They now support nearly all Matlab functionality including: |
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267 |
14082 | 268 * Matlab-compatible whitespace and delimiter defaults |
269 | |
270 * Matlab-compatible options: 'whitespace', treatasempty', format | |
271 string repeat count, user-specified comment style, uneven-length | |
272 output arrays, %n and %u conversion specifiers (provisionally) | |
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273 |
14082 | 274 ** All .m string functions have been modified for better performance or |
275 greater Matlab compatibility. Performance gains of 15X-30X have | |
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276 been demonstrated. Operations on cell array of strings no longer pay |
14082 | 277 quite as high a penalty as those on 2-D character arrays. |
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278 |
14082 | 279 deblank: Now requires character or cellstr input. |
280 | |
281 strtrim: Now requires character or cellstr input. | |
282 No longer trims nulls ("\0") from string for Matlab | |
283 compatibility. | |
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284 |
14082 | 285 strmatch: Follows documentation precisely and ignores trailing spaces |
286 in pattern and in string. Note that this is documented | |
287 Matlab behavior but the implementation apparently does | |
288 not always follow it. | |
289 | |
290 substr: Now possible to specify a negative LEN option which | |
291 extracts to within LEN of the end of the string. | |
292 | |
293 strtok: Now accepts cellstr input. | |
294 | |
295 base2dec, bin2dec, hex2dec: | |
296 Now accept cellstr inputs. | |
297 | |
298 dec2base, dec2bin, dec2hex: | |
299 Now accept cellstr inputs. | |
300 | |
301 index, rindex: | |
302 Now accept 2-D character array input. | |
303 | |
304 strsplit: Now accepts 2-D character array input. | |
13262 | 305 |
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306 ** Geometry functions derived from Qhull (convhull, delaunay, voronoi) |
14082 | 307 have been revamped. The options passed to the underlying qhull |
308 command have been changed for better results or for Matlab | |
309 compatibility. | |
310 | |
311 convhull: Default options are "Qt" for 2D, 3D, 4D inputs | |
312 Default options are "Qt Qx" for 5D and higher | |
313 | |
314 delaunay: Default options are "Qt Qbb Qc Qz" for 2D and 3D inputs | |
315 Default options are "Qt Qbb Qc Qx" for 4D and higher | |
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316 |
14082 | 317 voronoi: No default arguments |
318 | |
319 ** Date/Time functions updated. Millisecond support with FFF format | |
320 string now supported. | |
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321 |
14082 | 322 datestr: Numerical formats 21, 22, 29 changed to match Matlab. |
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323 Now accepts cellstr input. |
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324 |
14082 | 325 ** The following warning IDs have been removed: |
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326 |
14082 | 327 Octave:associativity-change |
328 Octave:complex-cmp-ops | |
329 Octave:empty-list-elements | |
330 Octave:fortran-indexing | |
331 Octave:precedence-change | |
332 | |
333 ** The warning ID Octave:string-concat has been renamed to | |
334 Octave:mixed-string-concat. | |
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335 |
14082 | 336 ** Octave now includes the following Matlab-compatible preference |
337 functions: | |
13262 | 338 |
14082 | 339 addpref getpref ispref rmpref setpref |
13262 | 340 |
14082 | 341 ** The following Matlab-compatible handle graphics functions have been |
342 added: | |
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343 |
14082 | 344 guidata uipanel uitoolbar |
345 guihandles uipushtool uiwait | |
346 uicontextmenu uiresume waitfor | |
347 uicontrol uitoggletool | |
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348 |
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349 The uiXXX functions above are experimental. |
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350 |
14082 | 351 Except for uiwait and uiresume, the uiXXX functions are not |
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352 supported with the FLTK+OpenGL graphics toolkit. |
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353 |
14082 | 354 The gnuplot graphics toolkit does not support any of the uiXXX |
355 functions nor the waitfor function. | |
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356 |
14082 | 357 ** New keyword parfor (parallel for loop) is now recognized as a valid |
358 keyword. Implementation, however, is still mapped to an ordinary | |
359 for loop. | |
13919
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360 |
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361 ** Other new functions added in 3.6.0: |
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362 |
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363 bicg nthargout usejava |
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364 is_dq_string narginchk waitbar |
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365 is_sq_string python zscore |
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366 is_function_handle register_graphics_toolkit |
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367 loaded_graphics_toolkits recycle |
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368 |
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369 ** Deprecated functions. |
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370 |
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371 The following functions were deprecated in Octave 3.2 and have been |
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372 removed from Octave 3.6. |
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373 |
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374 create_set spcholinv splu |
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375 dmult spcumprod spmax |
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376 iscommand spcumsum spmin |
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377 israwcommand spdet spprod |
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378 lchol spdiag spqr |
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379 loadimage spfind spsum |
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380 mark_as_command sphcat spsumsq |
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381 mark_as_rawcommand spinv spvcat |
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382 spatan2 spkron str2mat |
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383 spchol splchol unmark_command |
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384 spchol2inv split unmark_rawcommand |
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385 |
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386 The following functions have been deprecated in Octave 3.6 and will |
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387 be removed from Octave 3.10 (or whatever version is the second major |
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388 release after 3.6): |
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389 |
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390 cut is_duplicate_entry |
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391 cor polyderiv |
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392 corrcoef shell_cmd |
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393 __error_text__ studentize |
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394 error_text sylvester_matrix |
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395 |
14441
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396 ** The following functions have been modified for Matlab compatibility: |
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397 |
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398 randperm |
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399 |
13251 | 400 Summary of important user-visible changes for version 3.4.3: |
401 ----------------------------------------------------------- | |
402 | |
13254
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403 ** Octave 3.4.3 is a bug fixing release. |
13268
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404 |
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405 Summary of important user-visible changes for version 3.4.2: |
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406 ----------------------------------------------------------- |
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407 |
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408 ** Octave 3.4.2 fixes some minor installation problems that affected |
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409 version 3.4.1. |
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410 |
12709 | 411 Summary of important user-visible changes for version 3.4.1: |
412 ----------------------------------------------------------- | |
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413 |
12709 | 414 ** Octave 3.4.1 is primarily a bug fixing release. |
415 | |
416 ** IMPORTANT note about binary incompatibility in this release: | |
12488
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417 |
12746
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418 Binary compatibility for all 3.4.x releases was originally planned, |
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419 but this is impossible for the 3.4.1 release due to a bug in the way |
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420 shared libraries were built in Octave 3.4.0. Because of this bug, |
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421 .oct files built for Octave 3.4.0 must be recompiled before they |
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422 will work with Octave 3.4.1. |
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423 |
12709 | 424 Given that there would be binary incompatibilities with shared |
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425 libraries going from Octave 3.4.0 to 3.4.1, the following |
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426 incompatible changes were also made in this release: |
12709 | 427 |
428 * The Perl Compatible Regular Expression (PCRE) library is now | |
429 required to build Octave. | |
12413
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430 |
12712 | 431 * Octave's libraries and .oct files are now installed in |
432 subdirectories of $libdir instead of $libexecdir. | |
433 | |
12709 | 434 Any future Octave 3.4.x release versions should remain binary |
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435 compatible with Octave 3.4.1 as proper library versioning is now |
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436 being used as recommended by the libtool manual. |
12709 | 437 |
438 ** The following functions have been deprecated in Octave 3.4.1 and will | |
439 be removed from Octave 3.8 (or whatever version is the second major | |
440 release after 3.4): | |
441 | |
442 cquad is_duplicate_entry perror strerror | |
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443 |
12709 | 444 ** The following functions are new in 3.4.1: |
445 | |
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446 colstyle gmres iscolumn isrow mgorth nproc rectangle |
12709 | 447 |
448 ** The get_forge_pkg function is now private. | |
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449 |
12709 | 450 ** The rectangle_lw, rectangle_sw, triangle_lw, and triangle_sw |
451 functions are now private. | |
452 | |
453 ** The logistic_regression_derivatives and logistic_regression_likelihood | |
454 functions are now private. | |
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455 |
12739 | 456 ** ChangeLog files in the Octave sources are no longer maintained |
457 by hand. Instead, there is a single ChangeLog file generated from | |
458 the Mercurial version control commit messages. Older ChangeLog | |
459 information can be found in the etc/OLD-ChangeLogs directory in the | |
460 source distribution. | |
461 | |
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462 Summary of important user-visible changes for version 3.4: |
9352 | 463 --------------------------------------------------------- |
464 | |
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465 ** BLAS and LAPACK libraries are now required to build Octave. The |
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466 subset of the reference BLAS and LAPACK libraries has been removed |
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467 from the Octave sources. |
12418
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468 |
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469 ** The ARPACK library is now distributed with Octave so it no longer |
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470 needs to be available as an external dependency when building |
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471 Octave. |
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|
472 |
10118 | 473 ** The `lookup' function was extended to be more useful for |
474 general-purpose binary searching. Using this improvement, the | |
475 ismember function was rewritten for significantly better | |
476 performance. | |
9352 | 477 |
478 ** Real, integer and logical matrices, when used in indexing, will now | |
479 cache the internal index_vector value (zero-based indices) when | |
480 successfully used as indices, eliminating the conversion penalty for | |
10118 | 481 subsequent indexing by the same matrix. In particular, this means it |
482 is no longer needed to avoid repeated indexing by logical arrays | |
483 using find for performance reasons. | |
9888 | 484 |
10118 | 485 ** Logical matrices are now treated more efficiently when used as |
486 indices. Octave will keep the index as a logical mask unless the | |
487 ratio of true elements is small enough, using a specialized | |
488 code. Previously, all logical matrices were always first converted | |
489 to index vectors. This results in savings in both memory and | |
490 computing time. | |
9480 | 491 |
10118 | 492 ** The `sub2ind' and `ind2sub' functions were reimplemented as compiled |
493 functions for better performance. These functions are now faster, | |
494 can deliver more economized results for ranges, and can reuse the | |
495 index cache mechanism described in previous paragraph. | |
496 | |
497 ** The built-in function equivalents to associative operators (`plus', | |
498 `times', `mtimes', `and', and `or') have been extended to accept | |
499 multiple arguments. This is especially useful for summing | |
500 (multiplying, etc.) lists of objects (of possibly distinct types): | |
9408 | 501 |
9449 | 502 matrix_sum = plus (matrix_list{:}); |
503 | |
10118 | 504 ** An FTP object type based on libcurl has been implemented. These |
505 objects allow ftp connections, downloads and uploads to be | |
506 managed. For example, | |
9880 | 507 |
10118 | 508 fp = ftp ("ftp.octave.org); |
509 cd (fp, "gnu/octave"); | |
510 mget (fp, "octave-3.2.3.tar.bz2"); | |
511 close (fp); | |
9880 | 512 |
10118 | 513 ** The default behavior of `assert (observed, expected)' has been |
514 relaxed to employ less strict checking that does not require the | |
515 internals of the values to match. This avoids previously valid | |
516 tests from breaking due to new internal classes introduced in future | |
517 Octave versions. | |
9449 | 518 |
519 For instance, all of these assertions were true in Octave 3.0.x | |
520 but false in 3.2.x due to new optimizations and improvements: | |
521 | |
522 assert (2*linspace (1, 5, 5), 2*(1:5)) | |
523 assert (zeros (0, 0), []) | |
524 assert (2*ones (1, 5), (2) (ones (1,5))) | |
9462 | 525 |
10118 | 526 ** The behavior of library functions `ismatrix', `issquare', and |
527 `issymmetric' has been changed for better consistency. | |
9873 | 528 |
10292 | 529 * The `ismatrix' function now returns true for all numeric, |
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530 logical and character 2-D or N-D matrices. Previously, `ismatrix' |
10292 | 531 returned false if the first or second dimension was zero. |
532 Hence, `ismatrix ([])' was false, | |
533 while `ismatrix (zeros (1,2,0))' was true. | |
9873 | 534 |
10118 | 535 * The `issquare' function now returns a logical scalar, and is |
536 equivalent to the expression | |
537 | |
538 ismatrix (x) && ndims (x) == 2 && rows (x) == columns (x) | |
539 | |
540 The dimension is no longer returned. As a result, `issquare ([])' | |
541 now yields true. | |
9873 | 542 |
10118 | 543 * The `issymmetric' function now checks for symmetry instead of |
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544 Hermitianness. For the latter, ishermitian was created. Also, |
10118 | 545 logical scalar is returned rather than the dimension, so |
546 `issymmetric ([])' is now true. | |
9873 | 547 |
10118 | 548 ** Function handles are now aware of overloaded functions. If a |
549 function is overloaded, the handle determines at the time of its | |
550 reference which function to call. A non-overloaded version does not | |
551 need to exist. | |
9873 | 552 |
10118 | 553 ** Overloading functions for built-in classes (double, int8, cell, |
554 etc.) is now compatible with Matlab. | |
9408 | 555 |
10323 | 556 ** Function handles can now be compared with the == and != operators, |
557 as well as the `isequal' function. | |
558 | |
10118 | 559 ** Performance of concatenation (using []) and the functions `cat', |
560 `horzcat', and `vertcat' has been improved for multidimensional | |
561 arrays. | |
10117 | 562 |
9547 | 563 ** The operation-assignment operators +=, -=, *= and /= now behave more |
10118 | 564 efficiently in certain cases. For instance, if M is a matrix and S a |
565 scalar, then the statement | |
9547 | 566 |
10118 | 567 M += S; |
9547 | 568 |
10118 | 569 will operate on M's data in-place if it is not shared by another |
570 variable, usually increasing both time and memory efficiency. | |
9547 | 571 |
9558 | 572 Only selected common combinations are affected, namely: |
9547 | 573 |
574 matrix += matrix | |
575 matrix -= matrix | |
9558 | 576 matrix .*= matrix |
577 matrix ./= matrix | |
578 | |
9547 | 579 matrix += scalar |
580 matrix -= scalar | |
581 matrix *= scalar | |
582 matrix /= scalar | |
9558 | 583 |
9552 | 584 logical matrix |= logical matrix |
585 logical matrix &= logical matrix | |
9547 | 586 |
10118 | 587 where matrix and scalar belong to the same class. The left-hand |
588 side must be a simple variable reference. | |
9888 | 589 |
10118 | 590 Moreover, when unary operators occur in expressions, Octave will |
591 also try to do the operation in-place if it's argument is a | |
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592 temporary expression. |
9589 | 593 |
10118 | 594 ** The effect of comparison operators (<, >, <=, and >=) applied to |
595 complex numbers has changed to be consistent with the strict | |
596 ordering defined by the `max', `min', and `sort' functions. More | |
597 specifically, complex numbers are compared by lexicographical | |
598 comparison of the pairs `[abs(z), arg(z)]'. Previously, only real | |
14188 | 599 parts were compared; this can be trivially achieved by converting |
600 the operands to real values with the `real' function. | |
9547 | 601 |
10118 | 602 ** The automatic simplification of complex computation results has |
603 changed. Octave will now simplify any complex number with a zero | |
604 imaginary part or any complex matrix with all elements having zero | |
605 imaginary part to a real value. Previously, this was done only for | |
606 positive zeros. Note that the behavior of the complex function is | |
607 unchanged and it still produces a complex value even if the | |
608 imaginary part is zero. | |
9826 | 609 |
10118 | 610 ** As a side effect of code refactoring in liboctave, the binary |
611 logical operations are now more easily amenable to compiler | |
612 optimizations and are thus significantly faster. | |
9595 | 613 |
10118 | 614 ** Octave now allows user-defined `subsasgn' methods to optimize out |
615 redundant copies. For more information, see the manual. | |
9595 | 616 |
10453 | 617 ** More efficient matrix division handling. Octave is now able to |
10118 | 618 handle the expressions |
9664 | 619 |
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620 M' \ V |
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621 M.' \ V |
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622 V / M |
9664 | 623 |
10118 | 624 (M is a matrix and V is a vector) more efficiently in certain cases. |
625 In particular, if M is triangular, all three expressions will be | |
626 handled by a single call to xTRTRS (from LAPACK), with appropriate | |
10453 | 627 flags. Previously, all three expressions required a physical |
10118 | 628 transpose of M. |
9664 | 629 |
10118 | 630 ** More efficient handling of certain mixed real-complex matrix |
631 operations. For instance, if RM is a real matrix and CM a complex | |
632 matrix, | |
9664 | 633 |
10118 | 634 RM * CM |
9664 | 635 |
636 can now be evaluated either as | |
637 | |
638 complex (RM * real (CM), RM * imag (CM)) | |
639 | |
640 or as | |
641 | |
642 complex (RM) * CM, | |
643 | |
10453 | 644 depending on the dimensions. The first form requires more |
645 temporaries and copying, but halves the FLOP count, which normally | |
646 brings better performance if RM has enough rows. Previously, the | |
647 second form was always used. | |
9664 | 648 |
11111 | 649 Matrix division is similarly affected. |
9664 | 650 |
10118 | 651 ** More efficient handling of triangular matrix factors returned from |
652 factorizations. The functions for computing QR, LU and Cholesky | |
653 factorizations will now automatically return the triangular matrix | |
654 factors with proper internal matrix_type set, so that it won't need | |
655 to be computed when the matrix is used for division. | |
9717 | 656 |
10118 | 657 ** The built-in `sum' function now handles the non-native summation |
658 (i.e., double precision sum of single or integer inputs) more | |
659 efficiently, avoiding a temporary conversion of the whole input | |
660 array to doubles. Further, `sum' can now accept an extra option | |
661 argument, using a compensated summation algorithm rather than a | |
662 straightforward sum, which significantly improves precision if lots | |
663 of cancellation occurs in the summation. | |
9717 | 664 |
10118 | 665 ** The built-in `bsxfun' function now uses optimized code for certain |
666 cases where built-in operator handles are passed in. Namely, the | |
667 optimizations concern the operators `plus', `minus', `times', | |
668 `ldivide', `rdivide', `power', `and', `or' (for logical arrays), | |
669 the relational operators `eq', `ne', `lt', `le', `gt', `ge', and the | |
670 functions `min' and `max'. Optimizations only apply when both | |
671 operands are of the same built-in class. Mixed real/complex and | |
672 single/double operations will first convert both operands to a | |
673 common type. | |
9745 | 674 |
10118 | 675 ** The `strfind' and `strrep' functions now have compiled |
676 implementations, facilitating significantly more efficient searching | |
677 and replacing in strings, especially with longer patterns. The code | |
678 of `strcat' has been vectorized and is now much more efficient when | |
679 many strings are concatenated. The `strcmpi' and `strncmpi' | |
680 functions are now built-in functions, providing better performance. | |
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681 |
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682 ** 'str2double' now has a compiled implementation and the API conforms |
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683 to Matlab. The additional Octave-specific features of returning a |
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684 boolean matrix indicating which elements were successfully converted |
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685 has been removed. |
10208 | 686 |
10453 | 687 ** Matlab-style ignoring input and output function arguments using |
11111 | 688 tilde (~) is now supported. Ignored output arguments may be |
689 detected from a function using the built-in function `isargout'. | |
690 For more details, consult the manual. | |
10886 | 691 |
10453 | 692 ** The list datatype, deprecated since the introduction of cells, has |
693 been removed. | |
10276 | 694 |
10453 | 695 ** The accumarray function has been optimized and is now significantly |
696 faster in certain important cases. | |
10054 | 697 |
10292 | 698 ** The behavior of isreal and isnumeric functions was changed to be more |
699 Matlab-compatible. | |
700 | |
10406 | 701 ** The integer math & conversion warnings (Octave:int-convert-nan, |
702 Octave:int-convert-non-int-val, Octave:int-convert-overflow, | |
11111 | 703 Octave:int-math-overflow) have been removed. |
10406 | 704 |
10453 | 705 ** rem and mod are now built-in functions. They also handle integer |
706 types efficiently using integer arithmetic. | |
10437 | 707 |
10536 | 708 ** Sparse indexing and indexed assignment has been mostly rewritten. |
709 Since Octave uses compressed column storage for sparse matrices, | |
710 major attention is devoted to operations manipulating whole columns. | |
711 Such operations are now significantly faster, as well as some other | |
712 important cases. | |
713 | |
714 Further, it is now possible to pre-allocate a sparse matrix and | |
715 subsequently fill it by assignments, provided they meet certain | |
716 conditions. For more information, consult the `spalloc' function, | |
717 which is no longer a mere dummy. Consequently, nzmax and nnz are no | |
11111 | 718 longer always equal in Octave. Octave may also produce a matrix |
719 with nnz < nzmax as a result of other operations, so you should | |
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720 consistently use nnz unless you really want to use nzmax (i.e., the |
11111 | 721 space allocated for nonzero elements). |
10536 | 722 |
723 Sparse concatenation is also affected, and concatenating sparse | |
724 matrices, especially larger collections, is now significantly more | |
11111 | 725 efficient. This applies to both the [] operator and the |
10536 | 726 cat/vertcat/horzcat functions. |
727 | |
11111 | 728 ** It is now possible to optionally employ the xGESDD LAPACK drivers |
14188 | 729 for computing the singular value decomposition using svd, instead |
11111 | 730 of the default xGESVD, using the configuration pseudo-variable |
731 svd_driver. The xGESDD driver can be up to 6x times faster when | |
732 singular vectors are requested, but is reported to be somewhat less | |
10639 | 733 robust on highly ill-conditioned matrices. |
734 | |
735 ** Configuration pseudo-variables, such as page_screen_output or | |
736 confirm_recursive_rmdir (or the above mentioned svd_driver), now | |
737 accept a "local" option as second argument, requesting the change | |
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738 to be undone when the current function returns: |
10639 | 739 |
740 function [status, msg] = rm_rf (dir) | |
741 confirm_recursive_rmdir (false, "local"); | |
742 [status, msg] = rmdir (dir, "s"); | |
743 ... | |
744 endfunction | |
745 | |
746 Upon return, confirm_recursive_rmdir will be restored to the value | |
747 it had on entry to the function, even if there were subsequent | |
748 changes to the variable in function rm_rf or any of the functions | |
749 it calls. | |
750 | |
11111 | 751 ** pkg now accepts a -forge option for downloading and installing |
752 packages from Octave Forge automatically. For example, | |
10774 | 753 |
754 pkg install -forge general | |
755 | |
11111 | 756 will automatically download the latest release of the general |
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757 package and attempt to install it. No automatic resolving of |
11111 | 758 dependencies is provided. Further, |
10639 | 759 |
10774 | 760 pkg list -forge |
761 | |
762 can be used to list all available packages. | |
763 | |
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764 ** The internal data representation of structs has been completely |
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765 rewritten to make certain optimizations feasible. The field data |
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766 can now be shared between structs with equal keys but different |
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767 dimensions or values, making operations that preserve the fields |
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768 faster. Economized storage is now used for scalar structs (just |
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769 like most other scalars), making their usage more |
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770 memory-efficient. Certain array-like operations on structs |
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771 (concatenation, uniform cellfun, num2cell) have gained a |
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772 significant speed-up. Additionally, the octave_scalar_map class |
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773 now provides a simpler interface to work with scalar structs within |
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774 a C++ DLD function. |
10639 | 775 |
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776 ** Two new formats are available for displaying numbers: |
11111 | 777 |
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778 format short eng |
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779 format long eng |
11111 | 780 |
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781 Both display numbers in engineering notation, i.e., mantissa + |
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782 exponent where the exponent is a multiple of 3. |
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783 |
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784 ** The following functions are new in Octave 3.4: |
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785 accumdim erfcx nfields pqpnonneg uigetdir |
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786 bitpack fileread nth_element quadcc uigetfile |
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787 bitunpack fminbnd onCleanup randi uiputfile |
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788 blkmm fskipl pbaspect repelems uimenu |
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789 cbrt ifelse pie3 reset whitebg |
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790 curl ishermitian powerset rsf2csf |
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791 chop isindex ppder saveas |
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792 daspect luupdate ppint strread |
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793 divergence merge ppjumps textread |
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794 |
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795 ** Using the image function to view images with external programs such |
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796 as display, xv, and xloadimage is no longer supported. The |
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797 image_viewer function has also been removed. |
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798 |
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799 ** The behavior of struct assignments to non-struct values has been |
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800 changed. Previously, it was possible to overwrite an arbitrary |
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801 value: |
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802 |
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803 a = 1; |
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804 a.x = 2; |
10873 | 805 |
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806 This is no longer possible unless a is an empty matrix or cell |
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807 array. |
b914e8125f1b
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|
808 |
b914e8125f1b
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diff
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|
809 ** The dlmread function has been extended to allow specifying a custom |
b914e8125f1b
NEWS: Use indent of 2 spaces rather than occasional 3 spaces.
Rik <octave@nomad.inbox5.com>
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diff
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|
810 value for empty fields. |
10829 | 811 |
12418
b914e8125f1b
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diff
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|
812 ** The dlmread and dlmwrite functions have been modified to accept |
b914e8125f1b
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Rik <octave@nomad.inbox5.com>
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diff
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|
813 file IDs (as returned by fopen) in addition to file names. |
11111 | 814 |
12418
b914e8125f1b
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|
815 ** Octave can now optimize away the interpreter overhead of an |
b914e8125f1b
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|
816 anonymous function handle, if the function simply calls another |
b914e8125f1b
NEWS: Use indent of 2 spaces rather than occasional 3 spaces.
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|
817 function or handle with some of its parameters bound to certain |
b914e8125f1b
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|
818 values. Example: |
b914e8125f1b
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|
819 |
b914e8125f1b
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Rik <octave@nomad.inbox5.com>
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changeset
|
820 f = @(x) sum (x, 1); |
10966 | 821 |
12418
b914e8125f1b
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|
822 When f is called, the call is forwarded to @sum with the constant 1 |
b914e8125f1b
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|
823 appended, and the anonymous function call does not occur on the |
b914e8125f1b
NEWS: Use indent of 2 spaces rather than occasional 3 spaces.
Rik <octave@nomad.inbox5.com>
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12413
diff
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|
824 call stack. |
10829 | 825 |
12424 | 826 ** For compatibility with Matlab, mu2lin (x) is now equivalent to |
827 mu2lin (x, 0). | |
828 | |
829 ** The new function `history_control' may be used to control the way | |
830 command lines are added to the history list when Octave is using | |
831 readline for command-line editing. For example | |
832 | |
833 history_control ("ignoredups") | |
834 | |
835 tells Octave to avoid adding duplicate lines to the history list. | |
836 | |
837 ** Octave now uses the gnulib library for improved portability and to | |
838 avoid bugs in operating system functions. | |
839 | |
11112
8ea4cf59c41b
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John W. Eaton <jwe@octave.org>
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11111
diff
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|
840 ** Deprecated functions. |
8ea4cf59c41b
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diff
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|
841 |
8ea4cf59c41b
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diff
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|
842 The following functions were deprecated in Octave 3.0 and have been |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
843 removed from Octave 3.4. |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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diff
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|
844 |
8ea4cf59c41b
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John W. Eaton <jwe@octave.org>
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11111
diff
changeset
|
845 beta_cdf geometric_pdf pascal_pdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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11111
diff
changeset
|
846 beta_inv geometric_rnd pascal_rnd |
8ea4cf59c41b
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John W. Eaton <jwe@octave.org>
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11111
diff
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|
847 beta_pdf hypergeometric_cdf poisson_cdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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11111
diff
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|
848 beta_rnd hypergeometric_inv poisson_inv |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
849 binomial_cdf hypergeometric_pdf poisson_pdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
850 binomial_inv hypergeometric_rnd poisson_rnd |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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11111
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|
851 binomial_pdf intersection polyinteg |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
852 binomial_rnd is_bool setstr |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
853 chisquare_cdf is_complex struct_contains |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
854 chisquare_inv is_list struct_elements |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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11111
diff
changeset
|
855 chisquare_pdf is_matrix t_cdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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11111
diff
changeset
|
856 chisquare_rnd is_scalar t_inv |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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11111
diff
changeset
|
857 clearplot is_square t_pdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
858 clg is_stream t_rnd |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
859 com2str is_struct uniform_cdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
860 exponential_cdf is_symmetric uniform_inv |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
861 exponential_inv is_vector uniform_pdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
862 exponential_pdf isstr uniform_rnd |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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|
863 exponential_rnd lognormal_cdf weibcdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
864 f_cdf lognormal_inv weibinv |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
865 f_inv lognormal_pdf weibpdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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diff
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|
866 f_pdf lognormal_rnd weibrnd |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
867 f_rnd meshdom weibull_cdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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11111
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changeset
|
868 gamma_cdf normal_cdf weibull_inv |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
869 gamma_inv normal_inv weibull_pdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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diff
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|
870 gamma_pdf normal_pdf weibull_rnd |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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11111
diff
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|
871 gamma_rnd normal_rnd wiener_rnd |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
872 geometric_cdf pascal_cdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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|
873 geometric_inv pascal_inv |
8ea4cf59c41b
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|
874 |
8ea4cf59c41b
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diff
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|
875 The following functions were deprecated in Octave 3.2 and will |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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diff
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|
876 be removed from Octave 3.6 (or whatever version is the second major |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
877 release after 3.2): |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
878 |
11390
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
879 create_set spcholinv splu |
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
880 dmult spcumprod spmax |
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
881 iscommand spcumsum spmin |
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
882 israwcommand spdet spprod |
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
883 lchol spdiag spqr |
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
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|
884 loadimage spfind spsum |
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
885 mark_as_command sphcat spsumsq |
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
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|
886 mark_as_rawcommand spinv spvcat |
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
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diff
changeset
|
887 spatan2 spkron str2mat |
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
888 spchol splchol unmark_command |
7ca273af4309
Deprecate sphcat and spvcat functions.
Rik <octave@nomad.inbox5.com>
parents:
11330
diff
changeset
|
889 spchol2inv split unmark_rawcommand |
11112
8ea4cf59c41b
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11111
diff
changeset
|
890 |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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11111
diff
changeset
|
891 The following functions have been deprecated in Octave 3.4 and will |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
892 be removed from Octave 3.8 (or whatever version is the second major |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
893 release after 3.4): |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
894 |
14354
55bb8c902a4d
maint: Remove deprecated functions from dev branch for next (3.8) release.
Rik <octave@nomad.inbox5.com>
parents:
14294
diff
changeset
|
895 autocor cellidx gammai is_global replot values |
55bb8c902a4d
maint: Remove deprecated functions from dev branch for next (3.8) release.
Rik <octave@nomad.inbox5.com>
parents:
14294
diff
changeset
|
896 autocov dispatch glpkmex krylovb saveimage |
55bb8c902a4d
maint: Remove deprecated functions from dev branch for next (3.8) release.
Rik <octave@nomad.inbox5.com>
parents:
14294
diff
changeset
|
897 betai fstat intwarning perror strerror |
11112
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
898 |
7990
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
899 Summary of important user-visible changes for version 3.2: |
5913 | 900 --------------------------------------------------------- |
2452 | 901 |
8737 | 902 ** Compatibility with Matlab graphics has been improved. |
6329 | 903 |
8070
3b53b25e2550
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diff
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|
904 The hggroup object and associated listener callback functions have |
8737 | 905 been added allowing the inclusion of group objects. Data sources |
8070
3b53b25e2550
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diff
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|
906 have been added to these group objects such that |
3b53b25e2550
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diff
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|
907 |
3b53b25e2550
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diff
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|
908 x = 0:0.1:10; |
3b53b25e2550
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|
909 y = sin (x); |
3b53b25e2550
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diff
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|
910 plot (x, y, "ydatasource", "y"); |
3b53b25e2550
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|
911 for i = 1 : 100 |
3b53b25e2550
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|
912 pause(0.1) |
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|
913 y = sin (x + 0.1 * i); |
14188 | 914 refreshdata (); |
8070
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|
915 endfor |
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changeset
|
916 |
8737 | 917 works as expected. This capability has be used to introduce |
9031
1052a66078cf
Documentation cleanup of top-level Octave directory (READMEs, INSTALL)
Rik <rdrider0-list@yahoo.com>
parents:
8932
diff
changeset
|
918 stem-series, bar-series, etc., objects for better Matlab |
8737 | 919 compatibility. |
920 | |
921 ** New graphics functions: | |
922 | |
11576
8ac9687dbe9f
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|
923 addlistener ezcontour gcbo refresh |
8ac9687dbe9f
rename backend to graphics_toolkit
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diff
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|
924 addproperty ezcontourf ginput refreshdata |
8ac9687dbe9f
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|
925 allchild ezmesh gtext specular |
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
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11562
diff
changeset
|
926 available_graphics_toolkits ezmeshc intwarning surfl |
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
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diff
changeset
|
927 graphics_toolkit ezplot ishghandle trisurf |
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
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11562
diff
changeset
|
928 cla ezplot3 isocolors waitforbuttonpress |
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
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11562
diff
changeset
|
929 clabel ezpolar isonormals |
8ac9687dbe9f
rename backend to graphics_toolkit
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11562
diff
changeset
|
930 comet ezsurf isosurface |
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
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11562
diff
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|
931 dellistener findall linkprop |
8ac9687dbe9f
rename backend to graphics_toolkit
John W. Eaton <jwe@octave.org>
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diff
changeset
|
932 diffuse gcbf plotmatrix |
8070
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|
933 |
8737 | 934 ** New experimental OpenGL/FLTK based plotting system. |
935 | |
936 An experimental plotting system based on OpenGL and the FLTK | |
11576
8ac9687dbe9f
rename backend to graphics_toolkit
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11562
diff
changeset
|
937 toolkit is now part of Octave. This graphics toolkit is disabled by |
8737 | 938 default. You can switch to using it with the command |
8070
3b53b25e2550
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|
939 |
11576
8ac9687dbe9f
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diff
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|
940 graphics_toolkit ("fltk") |
8070
3b53b25e2550
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changeset
|
941 |
3b53b25e2550
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diff
changeset
|
942 for all future figures or for a particular figure with the command |
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changeset
|
943 |
11576
8ac9687dbe9f
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changeset
|
944 graphics_toolkit (h, "fltk") |
8070
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|
945 |
11139 | 946 where "h" is a valid figure handle. |
8070
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|
947 |
8737 | 948 ** Functions providing direct access to gnuplot have been removed. |
949 | |
7990
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
950 The functions __gnuplot_plot__, __gnuplot_set__, __gnuplot_raw__, |
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
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7279
diff
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|
951 __gnuplot_show__, __gnuplot_replot__, __gnuplot_splot__, |
8737 | 952 __gnuplot_save_data__ and __gnuplot_send_inline_data__ have been |
953 removed from Octave. These function were incompatible with the | |
954 high level graphics handle code. | |
6329 | 955 |
8885 | 956 ** The Control, Finance and Quaternion functions have been removed. |
957 | |
958 These functions are now available as separate packages from | |
959 | |
960 http://octave.sourceforge.net/packages.html | |
961 | |
962 and can be reinstalled using the Octave package manager (see | |
963 the pkg function). | |
964 | |
965 ** Specific sparse matrix functions removed. | |
966 | |
967 The following functions, which handled only sparse matrices have | |
968 been removed. Instead of calling these functions directly, you | |
969 should use the corresponding function without the "sp" prefix. | |
8737 | 970 |
8885 | 971 spatan2 spcumsum spkron spprod |
972 spchol spdet splchol spqr | |
973 spchol2inv spdiag splu spsum | |
974 spcholinv spfind spmax spsumsqk | |
975 spcumprod spinv spmin | |
976 | |
977 ** Improvements to the debugger. | |
978 | |
979 The interactive debugging features have been improved. Stopping | |
980 on statements with dbstop should work correctly now. Stepping | |
981 into and over functions, and stepping one statement at a time | |
982 (with dbstep) now works. Moving up and down the call stack with | |
983 dbup and dbdown now works. The dbstack function is now available | |
984 to print the current function call stack. The new dbquit function | |
985 is available to exit the debugging mode. | |
986 | |
987 ** Improved traceback error messages. | |
988 | |
989 Traceback error messages are much more concise and easier to | |
990 understand. They now display information about the function call | |
991 stack instead of the stack of all statements that were active at | |
992 the point of the error. | |
8014
44d206ae68c9
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John W. Eaton <jwe@octave.org>
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7990
diff
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|
993 |
8737 | 994 ** Object Oriented Programming. |
8405
d79dfbff2f9d
document new norm features in NEWS
Jaroslav Hajek <highegg@gmail.com>
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8396
diff
changeset
|
995 |
8737 | 996 Octave now includes OOP features and the user can create their own |
997 class objects and overloaded functions and operators. For | |
998 example, all methods of a class called "myclass" will be found in | |
999 a directory "@myclass" on the users path. The class specific | |
1000 versions of functions and operators take precedence over the | |
1001 generic versions of these functions. | |
1002 | |
1003 New functions related to OOP include | |
7189 | 1004 |
8737 | 1005 class inferiorto isobject loadobj methods superiorto |
1006 | |
1007 See the Octave manual for more details. | |
7038 | 1008 |
8747 | 1009 ** Parsing of Command-style Functions. |
1010 | |
1011 Octave now parses command-style functions without needing to first | |
1012 declare them with "mark_as_command". The rules for recognizing a | |
1013 command-style function calls are | |
1014 | |
1015 * A command must appear as the first word in a statement, | |
1016 followed by a space. | |
1017 | |
1018 * The first character after the space must not be '=' or '(' | |
1019 | |
1020 * The next token after the space must not look like a binary | |
1021 operator. | |
1022 | |
1023 These rules should be mostly compatible with the way Matlab parses | |
1024 command-style function calls and allow users to define commands in | |
1025 .m files without having to mark them as commands. | |
1026 | |
1027 Note that previous versions of Octave allowed expressions like | |
1028 | |
1029 x = load -text foo.dat | |
1030 | |
1031 but an expression like this will now generate a parse error. In | |
1032 order to assign the value returned by a function to a variable, | |
1033 you must use the normal function call syntax: | |
1034 | |
1035 x = load ("-text", "foo.dat"); | |
1036 | |
8737 | 1037 ** Block comments. |
1038 | |
8747 | 1039 Commented code can be between matching "#{" and "#}" or "%{" and |
1040 "%}" markers, even if the commented code spans several line. This | |
1041 allows blocks code to be commented, without needing to comment | |
1042 each line. For example, | |
5814 | 1043 |
8747 | 1044 function [s, t] = func (x, y) |
1045 s = 2 * x; | |
1046 #{ | |
1047 s *= y; | |
1048 t = y + x; | |
1049 #} | |
7990
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
1050 endfunction |
5814 | 1051 |
8747 | 1052 the lines "s *= y;" and "t = y + x" will not be executed. |
8737 | 1053 |
12400
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don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1054 ** If any subfunction in a file ends with "end" or "endfunction", then |
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1055 they all must end that way. Previously, Octave accepted |
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1056 |
5252f12537f8
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diff
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|
1057 function main () |
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1058 ... |
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1059 # no endfunction here. |
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1060 function sub () |
5252f12537f8
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parents:
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changeset
|
1061 ... |
5252f12537f8
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John W. Eaton <jwe@octave.org>
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|
1062 endfunction |
5252f12537f8
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|
1063 |
5252f12537f8
don't warn about coercing nested functions to subfunctions if yyparse failed
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parents:
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diff
changeset
|
1064 but this is no longer allowed. |
5252f12537f8
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diff
changeset
|
1065 |
8737 | 1066 ** Special treatment in the parser of expressions like "a' * b". |
2452 | 1067 |
8737 | 1068 In these cases the transpose is no longer explicitly formed and |
1069 BLAS libraries are called with the transpose flagged, | |
1070 significantly improving performance for these kinds of | |
1071 operations. | |
8417
654bcfb937bf
Add the eigs and svds functions
David Bateman <dbateman@free.fr>
parents:
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diff
changeset
|
1072 |
8737 | 1073 ** Single Precision data type. |
2452 | 1074 |
8737 | 1075 Octave now includes a single precision data type. Single |
1076 precision variables can be created with the "single" command, or | |
9034
52515efc50c0
Documentation cleanup on NEWS file
Rik <rdrider0-list@yahoo.com>
parents:
9031
diff
changeset
|
1077 from functions like ones, eye, etc. For example, |
5995 | 1078 |
8737 | 1079 single (1) |
1080 ones (2, 2, "single") | |
1081 zeros (2, 2, "single") | |
1082 eye (2, 2, "single") | |
1083 Inf (2, 2, "single") | |
1084 NaN (2, 2, "single") | |
1085 NA (2, 2, "single") | |
7279 | 1086 |
8737 | 1087 all create single precision variables. For compatibility with |
1088 Matlab, mixed double/single precision operators and functions | |
1089 return single precision types. | |
1090 | |
1091 As a consequence of this addition to Octave the internal | |
7990
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
1092 representation of the double precision NA value has changed, and |
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
1093 so users that make use of data generated by Octave with R or |
86dae6e5b83c
Initial update of NEWS for 3.2 release
David Bateman <dbateman@free.fr>
parents:
7279
diff
changeset
|
1094 visa-versa are warned that compatibility might not be assured. |
7279 | 1095 |
8737 | 1096 ** Improved array indexing. |
1097 | |
1098 The underlying code used for indexing of arrays has been | |
9034
52515efc50c0
Documentation cleanup on NEWS file
Rik <rdrider0-list@yahoo.com>
parents:
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diff
changeset
|
1099 completely rewritten and indexing is now significantly faster. |
8737 | 1100 |
8755 | 1101 ** Improved memory management. |
1102 | |
1103 Octave will now attempt to share data in some cases where previously | |
1104 a copy would be made, such as certain array slicing operations or | |
9031
1052a66078cf
Documentation cleanup of top-level Octave directory (READMEs, INSTALL)
Rik <rdrider0-list@yahoo.com>
parents:
8932
diff
changeset
|
1105 conversions between cells, structs and cs-lists. This usually reduces |
8755 | 1106 both time and memory consumption. |
9128 | 1107 Also, Octave will now attempt to detect and optimize usage of a vector |
1108 as a stack, when elements are being repeatedly inserted at/removed from | |
1109 the end of the vector. | |
8755 | 1110 |
8738 | 1111 ** Improved performance for reduction operations. |
1112 | |
8755 | 1113 The performance of the sum, prod, sumsq, cumsum, cumprod, any, all, |
1114 max and min functions has been significantly improved. | |
8738 | 1115 |
9006 | 1116 ** Sorting and searching. |
1117 | |
1118 The performance of sort has been improved, especially when sorting | |
10453 | 1119 indices are requested. An efficient built-in issorted |
1120 implementation was added. The sortrows function now uses a more | |
12702
013cd94d8d7f
doc: Spelling fixes for various documentation files
John Bradshaw <john@johnbradshaw.org>
parents:
12698
diff
changeset
|
1121 efficient algorithm, especially in the homogeneous case. The lookup |
10453 | 1122 function is now a built-in function performing a binary search, |
1123 optimized for long runs of close elements. Lookup also works with | |
1124 cell arrays of strings. | |
9006 | 1125 |
1126 ** Range arithmetics | |
1127 | |
10453 | 1128 For some operations on ranges, Octave will attempt to keep the |
1129 result as a range. These include negation, adding a scalar, | |
14093
050bc580cb60
doc: Various docstring improvements before 3.6.0 release.
Rik <octave@nomad.inbox5.com>
parents:
14082
diff
changeset
|
1130 subtracting a scalar, and multiplying by a scalar. Ranges with zero |
10453 | 1131 increment are allowed and can be constructed using the built-in |
1132 function `ones'. | |
9006 | 1133 |
1134 ** Various performance improvements. | |
1135 | |
10453 | 1136 Performance of a number of other built-in operations and functions |
1137 was improved, including: | |
9006 | 1138 |
1139 * logical operations | |
1140 * comparison operators | |
1141 * element-wise power | |
1142 * accumarray | |
1143 * cellfun | |
1144 * isnan | |
1145 * isinf | |
1146 * isfinite | |
1147 * nchoosek | |
1148 * repmat | |
1149 * strcmp | |
1150 | |
8737 | 1151 ** 64-bit integer arithmetic. |
1152 | |
1153 Arithmetic with 64-bit integers (int64 and uint64 types) is fully | |
1154 supported, with saturation semantics like the other integer types. | |
1155 Performance of most integer arithmetic operations has been | |
1156 improved by using integer arithmetic directly. Previously, Octave | |
1157 performed integer math with saturation semantics by converting the | |
1158 operands to double precision, performing the operation, and then | |
1159 converting the result back to an integer value, truncating if | |
1160 necessary. | |
1161 | |
8885 | 1162 ** Diagonal and permutation matrices. |
1163 | |
1164 The interpreter can now treat diagonal and permutation matrices as | |
1165 special objects that store only the non-zero elements, rather than | |
1166 general full matrices. Therefore, it is now possible to construct | |
1167 and use these matrices in linear algebra without suffering a | |
1168 performance penalty due to storing large numbers of zero elements. | |
1169 | |
1170 ** Improvements to fsolve. | |
1171 | |
1172 The fsolve function now accepts an option structure argument (see | |
1173 also the optimset function). The INFO values returned from fsolve | |
1174 have changed to be compatible with Matlab's fsolve function. | |
1175 Additionally, fsolve is now able to solve overdetermined systems, | |
1176 complex-differentiable complex systems, systems with a sparse | |
1177 jacobian and can work in single precision if given single precision | |
9031
1052a66078cf
Documentation cleanup of top-level Octave directory (READMEs, INSTALL)
Rik <rdrider0-list@yahoo.com>
parents:
8932
diff
changeset
|
1178 inputs. It can also be called recursively. |
8885 | 1179 |
8737 | 1180 ** Improvements to the norm function. |
1181 | |
1182 The norm function is now able to compute row or column norms of a | |
1183 matrix in a single call, as well as general matrix p-norms. | |
1184 | |
1185 ** New functions for computing some eigenvalues or singular values. | |
1186 | |
1187 The eigs and svds functions have been included in Octave. These | |
1188 functions require the ARPACK library (now distributed under a | |
1189 GPL-compatible license). | |
1190 | |
1191 ** New QR and Cholesky factorization updating functions. | |
8370
34960ba08a81
document more new features in the NEWS file
Jaroslav Hajek <highegg@gmail.com>
parents:
8292
diff
changeset
|
1192 |
8737 | 1193 choldelete cholshift qrdelete qrshift |
1194 cholinsert cholupdate qrinsert qrupdate | |
1195 | |
1196 ** New quadrature functions. | |
1197 | |
1198 dblquad quadgk quadv triplequad | |
1199 | |
8885 | 1200 ** New functions for reading and writing images. |
1201 | |
1202 The imwrite and imread functions have been included in Octave. | |
1203 These functions require the GraphicsMagick library. The new | |
1204 function imfinfo provides information about an image file (size, | |
1205 type, colors, etc.) | |
1206 | |
9215
1500d0197484
allow multiple input event hook functions to be installed simultaneously
John W. Eaton <jwe@octave.org>
parents:
9128
diff
changeset
|
1207 ** The input_event_hook function has been replaced by the pair of |
1500d0197484
allow multiple input event hook functions to be installed simultaneously
John W. Eaton <jwe@octave.org>
parents:
9128
diff
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|
1208 functions add_input_event_hook and remove_input_event_hook so that |
1500d0197484
allow multiple input event hook functions to be installed simultaneously
John W. Eaton <jwe@octave.org>
parents:
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diff
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|
1209 more than one hook function may be installed at a time. |
1500d0197484
allow multiple input event hook functions to be installed simultaneously
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diff
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|
1210 |
8737 | 1211 ** Other miscellaneous new functions. |
8370
34960ba08a81
document more new features in the NEWS file
Jaroslav Hajek <highegg@gmail.com>
parents:
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diff
changeset
|
1212 |
8932
2d0f8692a82e
Add the 'histc' function
Soren Hauberg <hauberg@gmail.com>
parents:
8888
diff
changeset
|
1213 addtodate hypot reallog |
2d0f8692a82e
Add the 'histc' function
Soren Hauberg <hauberg@gmail.com>
parents:
8888
diff
changeset
|
1214 bicgstab idivide realpow |
9006 | 1215 cellslices info realsqrt |
1216 cgs interp1q rectint | |
1217 command_line_path isdebugmode regexptranslate | |
1218 contrast isfloat restoredefaultpath | |
1219 convn isstrprop roundb | |
1220 cummin log1p rundemos | |
1221 cummax lsqnonneg runlength | |
1222 datetick matlabroot saveobj | |
1223 display namelengthmax spaugment | |
1224 expm1 nargoutchk strchr | |
1225 filemarker pathdef strvcat | |
1226 fstat perl subspace | |
1227 full prctile symvar | |
1228 fzero quantile treelayout | |
1229 genvarname re_read_readline_init_file validatestring | |
1230 histc | |
8370
34960ba08a81
document more new features in the NEWS file
Jaroslav Hajek <highegg@gmail.com>
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8292
diff
changeset
|
1231 |
8885 | 1232 ** Changes to strcat. |
1233 | |
1234 The strcat function is now compatible with Matlab's strcat | |
1235 function, which removes trailing whitespace when concatenating | |
1236 character strings. For example | |
1237 | |
1238 strcat ('foo ', 'bar') | |
1239 ==> 'foobar' | |
1240 | |
1241 The new function cstrcat provides the previous behavior of | |
1242 Octave's strcat. | |
1243 | |
1244 ** Improvements to the help functions. | |
1245 | |
9034
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Documentation cleanup on NEWS file
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diff
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|
1246 The help system has been mostly re-implemented in .m files to make |
8885 | 1247 it easier to modify. Performance of the lookfor function has been |
1248 greatly improved by caching the help text from all functions that | |
1249 are distributed with Octave. The pkg function has been modified | |
1250 to generate cache files for external packages when they are | |
1251 installed. | |
1252 | |
8888
0c7b0049c023
mark create_set as deprecated in 3.2, not 3.0
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diff
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|
1253 ** Deprecated functions. |
0c7b0049c023
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|
1254 |
0c7b0049c023
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John W. Eaton <jwe@octave.org>
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8885
diff
changeset
|
1255 The following functions were deprecated in Octave 3.0 and will be |
11112
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1256 removed from Octave 3.4 (or whatever version is the second major |
8888
0c7b0049c023
mark create_set as deprecated in 3.2, not 3.0
John W. Eaton <jwe@octave.org>
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8885
diff
changeset
|
1257 release after 3.0): |
0c7b0049c023
mark create_set as deprecated in 3.2, not 3.0
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diff
changeset
|
1258 |
11112
8ea4cf59c41b
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diff
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|
1259 beta_cdf geometric_pdf pascal_pdf |
8ea4cf59c41b
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diff
changeset
|
1260 beta_inv geometric_rnd pascal_rnd |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
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11111
diff
changeset
|
1261 beta_pdf hypergeometric_cdf poisson_cdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1262 beta_rnd hypergeometric_inv poisson_inv |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1263 binomial_cdf hypergeometric_pdf poisson_pdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1264 binomial_inv hypergeometric_rnd poisson_rnd |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1265 binomial_pdf intersection polyinteg |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1266 binomial_rnd is_bool setstr |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1267 chisquare_cdf is_complex struct_contains |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1268 chisquare_inv is_list struct_elements |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1269 chisquare_pdf is_matrix t_cdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1270 chisquare_rnd is_scalar t_inv |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1271 clearplot is_square t_pdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
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|
1272 clg is_stream t_rnd |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
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parents:
11111
diff
changeset
|
1273 com2str is_struct uniform_cdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1274 exponential_cdf is_symmetric uniform_inv |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1275 exponential_inv is_vector uniform_pdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
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|
1276 exponential_pdf isstr uniform_rnd |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1277 exponential_rnd lognormal_cdf weibcdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1278 f_cdf lognormal_inv weibinv |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1279 f_inv lognormal_pdf weibpdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1280 f_pdf lognormal_rnd weibrnd |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1281 f_rnd meshdom weibull_cdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1282 gamma_cdf normal_cdf weibull_inv |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1283 gamma_inv normal_inv weibull_pdf |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1284 gamma_pdf normal_pdf weibull_rnd |
8ea4cf59c41b
list deprecated and removed functions in NEWS file
John W. Eaton <jwe@octave.org>
parents:
11111
diff
changeset
|
1285 gamma_rnd normal_rnd wiener_rnd |
8888
0c7b0049c023
mark create_set as deprecated in 3.2, not 3.0
John W. Eaton <jwe@octave.org>
parents:
8885
diff
changeset
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1286 geometric_cdf pascal_cdf |
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1287 geometric_inv pascal_inv |
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1288 |
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1289 The following functions are now deprecated in Octave 3.2 and will |
11112
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1290 be removed from Octave 3.6 (or whatever version is the second major |
8888
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1291 release after 3.2): |
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1292 |
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1293 create_set spcholinv spmax |
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1294 dmult spcumprod spmin |
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1295 iscommand spcumsum spprod |
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1296 israwcommand spdet spqr |
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1297 lchol spdiag spsum |
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1298 loadimage spfind spsumsq |
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1299 mark_as_command spinv str2mat |
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1300 mark_as_rawcommand spkron unmark_command |
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1301 spatan2 splchol unmark_rawcommand |
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1302 spchol split |
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1303 spchol2inv splu |
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1304 |
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1305 See NEWS.3 for old news. |