annotate scripts/io/dlmwrite.m @ 33632:fed0dc6fd44c default tip

remove unused variable from libgui/module.mk * libgui/module.mk: remove empty variable OCTAVE_GUI_EDITOR_MOC
author Torsten Lilge <ttl-octave@mailbox.org>
date Mon, 27 May 2024 19:42:05 +0200
parents 2e484f9f1f18
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 ########################################################################
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2 ##
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3 ## Copyright (C) 2002-2024 The Octave Project Developers
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4 ##
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5 ## See the file COPYRIGHT.md in the top-level directory of this
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6 ## distribution or <https://octave.org/copyright/>.
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7 ##
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8 ## This file is part of Octave.
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9 ##
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10 ## Octave is free software: you can redistribute it and/or modify it
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11 ## under the terms of the GNU General Public License as published by
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12 ## the Free Software Foundation, either version 3 of the License, or
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13 ## (at your option) any later version.
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14 ##
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15 ## Octave is distributed in the hope that it will be useful, but
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16 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 ## GNU General Public License for more details.
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19 ##
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20 ## You should have received a copy of the GNU General Public License
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21 ## along with Octave; see the file COPYING. If not, see
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22 ## <https://www.gnu.org/licenses/>.
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23 ##
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24 ########################################################################
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25
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26 ## -*- texinfo -*-
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27 ## @deftypefn {} {} dlmwrite (@var{file}, @var{M})
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28 ## @deftypefnx {} {} dlmwrite (@var{file}, @var{M}, @var{delim}, @var{r}, @var{c})
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29 ## @deftypefnx {} {} dlmwrite (@var{file}, @var{M}, @var{key}, @var{val} @dots{})
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30 ## @deftypefnx {} {} dlmwrite (@var{file}, @var{M}, "-append", @dots{})
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31 ## @deftypefnx {} {} dlmwrite (@var{fid}, @dots{})
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32 ## Write the numeric matrix @var{M} to the text file @var{file} using a
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33 ## delimiter.
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34 ##
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35 ## @var{file} should be a filename or a writable file ID given by @code{fopen}.
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36 ##
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37 ## The parameter @var{delim} specifies the delimiter to use to separate values
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38 ## on a row. If no delimiter is specified the comma character @samp{,} is
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39 ## used.
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40 ##
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41 ## The value of @var{r} specifies the number of delimiter-only lines to add to
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42 ## the start of the file.
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43 ##
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44 ## The value of @var{c} specifies the number of delimiters to prepend to each
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45 ## line of data.
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46 ##
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47 ## If the argument @qcode{"-append"} is given, append to the end of @var{file}.
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48 ##
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49 ## In addition, the following keyword value pairs may appear at the end of
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50 ## the argument list:
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51 ##
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52 ## @table @asis
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53 ## @item @qcode{"append"}
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54 ## Either @qcode{"on"} or @qcode{"off"}. See @qcode{"-append"} above.
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55 ##
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56 ## @item @qcode{"delimiter"}
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57 ## See @var{delim} above.
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58 ##
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59 ## @item @qcode{"newline"}
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60 ## The character(s) to separate each row. Three special cases exist for this
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61 ## option. @qcode{"unix"} is changed into @qcode{"@backslashchar{}n"},
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62 ## @qcode{"pc"} is changed into @qcode{"@backslashchar{}r@backslashchar{}n"},
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63 ## and @qcode{"mac"} is changed into @qcode{"@backslashchar{}r"}. Any other
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64 ## value is used directly as the newline separator.
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65 ##
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66 ## @item @qcode{"roffset"}
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67 ## See @var{r} above.
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68 ##
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69 ## @item @qcode{"coffset"}
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70 ## See @var{c} above.
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71 ##
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72 ## @item @qcode{"precision"}
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73 ## The precision to use when writing the file. It can either be a format
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74 ## string (as used by fprintf) or a number of significant digits.
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75 ## @end table
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76 ##
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77 ## @example
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78 ## dlmwrite ("file.csv", reshape (1:16, 4, 4));
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79 ## @end example
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80 ##
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81 ## @example
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82 ## dlmwrite ("file.tex", a, "delimiter", "&", "newline", "\n")
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83 ## @end example
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84 ##
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85 ## @seealso{dlmread, csvread, csvwrite}
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86 ## @end deftypefn
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87
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88 ## Author: Paul Kienzle <pkienzle@users.sf.net>
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89 ##
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90 ## This program was originally granted to the public domain
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91 ##
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92 ## 2002-03-08 Paul Kienzle <pkienzle@users.sf.net>
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93 ## * Initial revision
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94 ## 2005-11-27 Bill Denney <bill@givebillmoney.com>
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95 ## * Significant modifications of the input arguments for additional
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96 ## functionality.
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97
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98 function dlmwrite (file, M, varargin)
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99
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100 if (nargin < 2)
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101 print_usage ();
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102 endif
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103
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104 ## set defaults
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105 delim = ",";
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106 r = c = 0;
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107 newline = "\n";
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108 if (ischar (M))
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109 precision = "%c";
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110 else
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111 precision = "%.16g";
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112 endif
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113 opentype = "wt";
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114
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115 ## process the input arguments
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116 i = 0;
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117 while (i < length (varargin))
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118 i += 1;
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119 if (strcmpi (varargin{i}, "delimiter"))
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120 delim = varargin{++i};
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121 elseif (strcmpi (varargin{i}, "newline"))
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122 newline = varargin{++i};
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123 if (strcmpi (newline, "unix"))
10549
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Rik <code@nomad.inbox5.com>
parents: 9630
diff changeset
124 newline = "\n";
7580
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parents:
diff changeset
125 elseif (strcmpi (newline, "pc"))
10549
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Rik <code@nomad.inbox5.com>
parents: 9630
diff changeset
126 newline = "\r\n";
7580
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David Bateman <dbateman@free.fr>
parents:
diff changeset
127 elseif (strcmpi (newline, "mac"))
10549
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Rik <code@nomad.inbox5.com>
parents: 9630
diff changeset
128 newline = "\r";
7580
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parents:
diff changeset
129 endif
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
130 elseif (strcmpi (varargin{i}, "roffset"))
13765
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Rik <octave@nomad.inbox5.com>
parents: 12462
diff changeset
131 r = varargin{++i};
7580
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parents:
diff changeset
132 elseif (strcmpi (varargin{i}, "coffset"))
13765
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Rik <octave@nomad.inbox5.com>
parents: 12462
diff changeset
133 c = varargin{++i};
7580
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David Bateman <dbateman@free.fr>
parents:
diff changeset
134 elseif (strcmpi (varargin{i}, "precision"))
13765
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Rik <octave@nomad.inbox5.com>
parents: 12462
diff changeset
135 precision = varargin{++i};
7580
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David Bateman <dbateman@free.fr>
parents:
diff changeset
136 if (! strcmpi (class (precision), "char"))
10626
044d9df4d79a Correctly set output precision (#29870) in dlmwrite
Rik <octave@nomad.inbox5.com>
parents: 10549
diff changeset
137 precision = sprintf ("%%.%gg", precision);
7580
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
138 endif
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
139 elseif (strcmpi (varargin{i}, "-append"))
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
140 opentype = "at";
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
141 elseif (strcmpi (varargin{i}, "append"))
20735
418ae0cb752f Replace ++,-- with in-place operators for performance.
Rik <rik@octave.org>
parents: 20713
diff changeset
142 i += 1;
7580
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
143 if (strcmpi (varargin{i}, "on"))
10549
95c3e38098bf Untabify .m scripts
Rik <code@nomad.inbox5.com>
parents: 9630
diff changeset
144 opentype = "at";
7580
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David Bateman <dbateman@free.fr>
parents:
diff changeset
145 elseif (strcmpi (varargin{i}, "off"))
10549
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Rik <code@nomad.inbox5.com>
parents: 9630
diff changeset
146 opentype = "wt";
7580
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David Bateman <dbateman@free.fr>
parents:
diff changeset
147 else
13765
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Rik <octave@nomad.inbox5.com>
parents: 12462
diff changeset
148 error ('dlmwrite: append must be "on" or "off"');
7580
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David Bateman <dbateman@free.fr>
parents:
diff changeset
149 endif
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
150 else
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
151 if (i == 1)
10549
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Rik <code@nomad.inbox5.com>
parents: 9630
diff changeset
152 delim = varargin{i};
7580
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David Bateman <dbateman@free.fr>
parents:
diff changeset
153 elseif (i == 2)
10549
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Rik <code@nomad.inbox5.com>
parents: 9630
diff changeset
154 r = varargin{i};
7580
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David Bateman <dbateman@free.fr>
parents:
diff changeset
155 elseif (i == 3)
10549
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Rik <code@nomad.inbox5.com>
parents: 9630
diff changeset
156 c = varargin{i};
7580
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David Bateman <dbateman@free.fr>
parents:
diff changeset
157 else
14846
460a3c6d8bf1 maint: Use Octave coding convention for cuddled parenthis in function calls with empty argument lists.
Rik <octave@nomad.inbox5.com>
parents: 14363
diff changeset
158 print_usage ();
7580
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
159 endif
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
160 endif
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
161 endwhile
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
162
16995
1a1e831fe6b4 dlmwrite.m: Expand '\t' to TAB when used as delimiter for Matlab compatibility (bug #39505).
Rik <rik@octave.org>
parents: 16668
diff changeset
163 ## Expand '\t' to TAB for Matlab compatibility
1a1e831fe6b4 dlmwrite.m: Expand '\t' to TAB when used as delimiter for Matlab compatibility (bug #39505).
Rik <rik@octave.org>
parents: 16668
diff changeset
164 if (strcmp (delim, '\t'))
1a1e831fe6b4 dlmwrite.m: Expand '\t' to TAB when used as delimiter for Matlab compatibility (bug #39505).
Rik <rik@octave.org>
parents: 16668
diff changeset
165 delim = "\t";
1a1e831fe6b4 dlmwrite.m: Expand '\t' to TAB when used as delimiter for Matlab compatibility (bug #39505).
Rik <rik@octave.org>
parents: 16668
diff changeset
166 endif
1a1e831fe6b4 dlmwrite.m: Expand '\t' to TAB when used as delimiter for Matlab compatibility (bug #39505).
Rik <rik@octave.org>
parents: 16668
diff changeset
167
10936
1d761a30c3fb support file IDs in dlmwrite
Jaroslav Hajek <highegg@gmail.com>
parents: 10793
diff changeset
168 if (ischar (file))
1d761a30c3fb support file IDs in dlmwrite
Jaroslav Hajek <highegg@gmail.com>
parents: 10793
diff changeset
169 [fid, msg] = fopen (file, opentype);
24419
11d7cd4ece50 dlmwrite.m: Close fid if filename is only one char long (bug #52679)
Andreas Weber <andy.weber.aw@gmail.com>
parents: 23219
diff changeset
170 elseif (is_valid_file_id (file))
13765
0d4c6d54b6a3 dlmwrite.m: Restore ability to use FID instead of filename.
Rik <octave@nomad.inbox5.com>
parents: 12462
diff changeset
171 [fid, msg] = deal (file, "invalid file number");
10936
1d761a30c3fb support file IDs in dlmwrite
Jaroslav Hajek <highegg@gmail.com>
parents: 10793
diff changeset
172 else
11472
1740012184f9 Use uppercase for variable names in error() strings to match Info documentation. Only m-files done.
Rik <octave@nomad.inbox5.com>
parents: 11471
diff changeset
173 error ("dlmwrite: FILE must be a filename string or numeric FID");
10936
1d761a30c3fb support file IDs in dlmwrite
Jaroslav Hajek <highegg@gmail.com>
parents: 10793
diff changeset
174 endif
1d761a30c3fb support file IDs in dlmwrite
Jaroslav Hajek <highegg@gmail.com>
parents: 10793
diff changeset
175
7580
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parents:
diff changeset
176 if (fid < 0)
13765
0d4c6d54b6a3 dlmwrite.m: Restore ability to use FID instead of filename.
Rik <octave@nomad.inbox5.com>
parents: 12462
diff changeset
177 error (["dlmwrite: " msg]);
7580
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David Bateman <dbateman@free.fr>
parents:
diff changeset
178 else
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
179 if (r > 0)
7581
e0d7bb35a3ec style fixes
John W. Eaton <jwe@octave.org>
parents: 7580
diff changeset
180 fprintf (fid, "%s",
11471
994e2a93a8e2 Use uppercase 'A' to refer to matrix inputs in m-files.
Rik <octave@nomad.inbox5.com>
parents: 11032
diff changeset
181 repmat ([repmat(delim, 1, c + columns(M)-1), newline], 1, r));
7580
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
182 endif
11471
994e2a93a8e2 Use uppercase 'A' to refer to matrix inputs in m-files.
Rik <octave@nomad.inbox5.com>
parents: 11032
diff changeset
183 if (iscomplex (M))
13765
0d4c6d54b6a3 dlmwrite.m: Restore ability to use FID instead of filename.
Rik <octave@nomad.inbox5.com>
parents: 12462
diff changeset
184 cprecision = regexprep (precision, '^%([-\d.])', '%+$1');
7580
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parents:
diff changeset
185 template = [precision, cprecision, "i", ...
10549
95c3e38098bf Untabify .m scripts
Rik <code@nomad.inbox5.com>
parents: 9630
diff changeset
186 repmat([delim, precision, cprecision, "i"], 1, ...
11471
994e2a93a8e2 Use uppercase 'A' to refer to matrix inputs in m-files.
Rik <octave@nomad.inbox5.com>
parents: 11032
diff changeset
187 columns(M) - 1), newline ];
7580
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parents:
diff changeset
188 else
11471
994e2a93a8e2 Use uppercase 'A' to refer to matrix inputs in m-files.
Rik <octave@nomad.inbox5.com>
parents: 11032
diff changeset
189 template = [precision, repmat([delim, precision], 1, columns(M)-1),...
10549
95c3e38098bf Untabify .m scripts
Rik <code@nomad.inbox5.com>
parents: 9630
diff changeset
190 newline];
7580
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David Bateman <dbateman@free.fr>
parents:
diff changeset
191 endif
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
192 if (c > 0)
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
193 template = [repmat(delim, 1, c), template];
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
194 endif
11471
994e2a93a8e2 Use uppercase 'A' to refer to matrix inputs in m-files.
Rik <octave@nomad.inbox5.com>
parents: 11032
diff changeset
195 if (iscomplex (M))
994e2a93a8e2 Use uppercase 'A' to refer to matrix inputs in m-files.
Rik <octave@nomad.inbox5.com>
parents: 11032
diff changeset
196 M = M.';
14868
5d3a684236b0 maint: Use Octave coding conventions for cuddling parentheses in scripts directory
Rik <octave@nomad.inbox5.com>
parents: 14846
diff changeset
197 b = zeros (2*rows (M), columns (M));
11471
994e2a93a8e2 Use uppercase 'A' to refer to matrix inputs in m-files.
Rik <octave@nomad.inbox5.com>
parents: 11032
diff changeset
198 b(1: 2 : end, :) = real (M);
994e2a93a8e2 Use uppercase 'A' to refer to matrix inputs in m-files.
Rik <octave@nomad.inbox5.com>
parents: 11032
diff changeset
199 b(2: 2 : end, :) = imag (M);
7580
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
200 fprintf (fid, template, b);
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
201 else
11471
994e2a93a8e2 Use uppercase 'A' to refer to matrix inputs in m-files.
Rik <octave@nomad.inbox5.com>
parents: 11032
diff changeset
202 fprintf (fid, template, M.');
7580
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David Bateman <dbateman@free.fr>
parents:
diff changeset
203 endif
24419
11d7cd4ece50 dlmwrite.m: Close fid if filename is only one char long (bug #52679)
Andreas Weber <andy.weber.aw@gmail.com>
parents: 23219
diff changeset
204 if (ischar (file))
10940
306e40d773a9 don't fclose stream in dlmwrite
Jaroslav Hajek <highegg@gmail.com>
parents: 10936
diff changeset
205 fclose (fid);
306e40d773a9 don't fclose stream in dlmwrite
Jaroslav Hajek <highegg@gmail.com>
parents: 10936
diff changeset
206 endif
7580
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
207 endif
13765
0d4c6d54b6a3 dlmwrite.m: Restore ability to use FID instead of filename.
Rik <octave@nomad.inbox5.com>
parents: 12462
diff changeset
208
7580
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David Bateman <dbateman@free.fr>
parents:
diff changeset
209 endfunction
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
210
13765
0d4c6d54b6a3 dlmwrite.m: Restore ability to use FID instead of filename.
Rik <octave@nomad.inbox5.com>
parents: 12462
diff changeset
211
7580
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
212 %!test
19278
6ca096827123 Use tempname() rather than tmpnam() in core Octave.
Rik <rik@octave.org>
parents: 17744
diff changeset
213 %! f = tempname ();
14363
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents: 14327
diff changeset
214 %! dlmwrite (f,[1,2;3,4],"precision","%5.2f","newline","unix","roffset",1,"coffset",1);
13765
0d4c6d54b6a3 dlmwrite.m: Restore ability to use FID instead of filename.
Rik <octave@nomad.inbox5.com>
parents: 12462
diff changeset
215 %! fid = fopen (f,"rt");
14363
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents: 14327
diff changeset
216 %! f1 = char (fread (fid,Inf,"char")');
13765
0d4c6d54b6a3 dlmwrite.m: Restore ability to use FID instead of filename.
Rik <octave@nomad.inbox5.com>
parents: 12462
diff changeset
217 %! fclose (fid);
14363
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents: 14327
diff changeset
218 %! dlmwrite (f,[5,6],"precision","%5.2f","newline","unix","coffset",1,"delimiter",",","-append");
13765
0d4c6d54b6a3 dlmwrite.m: Restore ability to use FID instead of filename.
Rik <octave@nomad.inbox5.com>
parents: 12462
diff changeset
219 %! fid = fopen (f,"rt");
14363
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents: 14327
diff changeset
220 %! f2 = char (fread (fid,Inf,"char")');
13765
0d4c6d54b6a3 dlmwrite.m: Restore ability to use FID instead of filename.
Rik <octave@nomad.inbox5.com>
parents: 12462
diff changeset
221 %! fclose (fid);
0d4c6d54b6a3 dlmwrite.m: Restore ability to use FID instead of filename.
Rik <octave@nomad.inbox5.com>
parents: 12462
diff changeset
222 %! unlink (f);
7580
b4aa9ef3d3ef Port dlmread, dlmwrite, csvread and csvwrite from octave-forge
David Bateman <dbateman@free.fr>
parents:
diff changeset
223 %!
13765
0d4c6d54b6a3 dlmwrite.m: Restore ability to use FID instead of filename.
Rik <octave@nomad.inbox5.com>
parents: 12462
diff changeset
224 %! assert (f1,",,\n, 1.00, 2.00\n, 3.00, 4.00\n");
0d4c6d54b6a3 dlmwrite.m: Restore ability to use FID instead of filename.
Rik <octave@nomad.inbox5.com>
parents: 12462
diff changeset
225 %! assert (f2,",,\n, 1.00, 2.00\n, 3.00, 4.00\n, 5.00, 6.00\n");