annotate scripts/io/dlmwrite.m @ 7581:e0d7bb35a3ec

style fixes
author John W. Eaton <jwe@octave.org>
date Tue, 11 Mar 2008 21:15:59 -0400
parents b4aa9ef3d3ef
children 780cf056eb85
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 ## Copyright (C) 2002, 2008 Paul Kienzle
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 3 of the License, or (at
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8 ## your option) any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Function File} {} dlmwrite (@var{file}, @var{a})
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21 ## @deftypefnx {Function File} {} dmlwrite (@var{file}, @var{a}, @var{delim}, @var{r}, @var{c})
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22 ## @deftypefnx {Function File} {} dmlwrite (@var{file}, @var{a}, "attrib1", @var{value1}, "attrib2", @var{value2}, @dots{})
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23 ## @deftypefnx {Function File} {} dmlwrite (@var{file}, @var{a}, "-append", @dots{})
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24 ##
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25 ## Write the matrix @var{a} to the text @var{file} using delimiters.
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26 ##
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27 ## @table @var
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28 ## @item delim
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29 ## the delimiter to use to separate values on a row
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30 ##
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31 ## @item r
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32 ## the number of delimiter-only lines to add to the start of the file
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33 ##
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34 ## @item c
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35 ## the number of delimiters to prepend to each line of data.
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36 ##
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37 ## @item "-append"
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38 ## append to the end of the @var{file}.
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39 ##
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40 ## @item "append", state
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41 ## Either @samp{"on"} or @samp{"off"}. See @samp{"-append"} above.
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42 ##
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43 ## @item "delimiter", d
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44 ## See @var{delim} above.
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45 ##
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46 ## @item "newline", os
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47 ## The character(s) to use to separate each row. Three special cases
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48 ## exist for this option. @samp{"unix"} is changed into '\n',
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49 ## @samp{"pc"} is changed into '\r\n', and @samp{"mac"} is changed
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50 ## into '\r'. Other values for this option are kept as is.
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51 ##
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52 ## @item "roffset", r
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53 ## See @var{r} above.
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54 ##
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55 ## @item "coffset", c
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56 ## See @var{c} above.
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57 ##
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58 ## @item "precision", p
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59 ## The precision to use when writing the file. It can either be a
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60 ## format string (as used by fprintf) or a number of significant digits.
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61 ## @end table
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62 ##
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63 ## @example
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64 ## @var{A} = reshape(1:16,4,4);
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65 ## dlmwrite(@code{"file.csv"}, @var{A})
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66 ## @end example
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67 ##
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68 ## @example
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69 ## dlmwrite (@code{"file.tex"}, @var{a}, "delimiter", "&", "newline", "\\n")
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70 ## @end example
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71 ##
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72 ## @seealso{dlmread, csvread, csvwrite}
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73 ## @end deftypefn
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74
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75 ## Author: Paul Kienzle <pkienzle@users.sf.net>
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76 ##
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77 ## This program was originally granted to the public domain
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78 ##
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79 ## 2002-03-08 Paul Kienzle <pkienzle@users.sf.net>
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80 ## * Initial revision
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81 ## 2005-11-27 Bill Denney <bill@givebillmoney.com>
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82 ## * Significant modifications of the input arguements for additional
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83 ## functionality.
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84
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85 function dlmwrite (file, a, varargin)
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86
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87 if (nargin < 2 || ! ischar (file))
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88 ptint_usage ();
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89 endif
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90
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91 ## set defaults
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92 delim = ",";
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93 r = 0;
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94 c = 0;
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95 newline = "\n";
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96 precision = "%.16g";
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97 opentype = "wt";
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98
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99 ## process the input arguements
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100 i = 0;
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101 while (i < length (varargin))
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102 i = i + 1;
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103 if (strcmpi (varargin{i}, "delimiter"))
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104 i = i + 1;
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105 delim = varargin{i};
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106 elseif (strcmpi (varargin{i}, "newline"))
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107 i = i + 1;
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108 newline = varargin{i};
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109 if (strcmpi (newline, "unix"))
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110 newline = "\n";
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111 elseif (strcmpi (newline, "pc"))
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112 newline = "\r\n";
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113 elseif (strcmpi (newline, "mac"))
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114 newline = "\r";
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115 endif
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116 elseif (strcmpi (varargin{i}, "roffset"))
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117 i = i + 1;
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118 r = varargin{i};
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119 elseif (strcmpi (varargin{i}, "coffset"))
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120 i = i + 1;
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121 c = varargin{i};
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122 elseif (strcmpi (varargin{i}, "precision"))
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123 i = i + 1;
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124 precision = varargin{i};
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125 if (! strcmpi (class (precision), "char"))
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parents:
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126 precision = sprintf ("%.%gg", precision);
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parents:
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127 endif
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David Bateman <dbateman@free.fr>
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128 elseif (strcmpi (varargin{i}, "-append"))
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David Bateman <dbateman@free.fr>
parents:
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129 opentype = "at";
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David Bateman <dbateman@free.fr>
parents:
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130 elseif (strcmpi (varargin{i}, "append"))
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David Bateman <dbateman@free.fr>
parents:
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131 i = i + 1;
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David Bateman <dbateman@free.fr>
parents:
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132 if (strcmpi (varargin{i}, "on"))
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David Bateman <dbateman@free.fr>
parents:
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133 opentype = "at";
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David Bateman <dbateman@free.fr>
parents:
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134 elseif (strcmpi (varargin{i}, "off"))
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David Bateman <dbateman@free.fr>
parents:
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135 opentype = "wt";
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David Bateman <dbateman@free.fr>
parents:
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136 else
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David Bateman <dbateman@free.fr>
parents:
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137 error ("dlmwrite: append must be \"on\" or \"off\".");
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David Bateman <dbateman@free.fr>
parents:
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138 endif
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David Bateman <dbateman@free.fr>
parents:
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139 else
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David Bateman <dbateman@free.fr>
parents:
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140 if (i == 1)
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David Bateman <dbateman@free.fr>
parents:
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141 delim = varargin{i};
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David Bateman <dbateman@free.fr>
parents:
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142 elseif (i == 2)
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David Bateman <dbateman@free.fr>
parents:
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143 r = varargin{i};
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David Bateman <dbateman@free.fr>
parents:
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144 elseif (i == 3)
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David Bateman <dbateman@free.fr>
parents:
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145 c = varargin{i};
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David Bateman <dbateman@free.fr>
parents:
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146 else
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David Bateman <dbateman@free.fr>
parents:
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147 print_usage();
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David Bateman <dbateman@free.fr>
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148 endif
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David Bateman <dbateman@free.fr>
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149 endif
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David Bateman <dbateman@free.fr>
parents:
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150 endwhile
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David Bateman <dbateman@free.fr>
parents:
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151
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David Bateman <dbateman@free.fr>
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152 [fid, msg] = fopen (file, opentype);
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David Bateman <dbateman@free.fr>
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153 if (fid < 0)
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David Bateman <dbateman@free.fr>
parents:
diff changeset
154 error (msg);
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David Bateman <dbateman@free.fr>
parents:
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155 else
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David Bateman <dbateman@free.fr>
parents:
diff changeset
156 if (r > 0)
7581
e0d7bb35a3ec style fixes
John W. Eaton <jwe@octave.org>
parents: 7580
diff changeset
157 fprintf (fid, "%s",
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John W. Eaton <jwe@octave.org>
parents: 7580
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158 repmat ([repmat(delim, 1, c + columns(a)-1), newline], 1, r));
7580
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David Bateman <dbateman@free.fr>
parents:
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159 endif
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David Bateman <dbateman@free.fr>
parents:
diff changeset
160 if (iscomplex (a))
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David Bateman <dbateman@free.fr>
parents:
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161 cprecision = regexprep (precision, '^%([-\d.])','%+$1');
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David Bateman <dbateman@free.fr>
parents:
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162 template = [precision, cprecision, "i", ...
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David Bateman <dbateman@free.fr>
parents:
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163 repmat([delim, precision, cprecision, "i"], 1, ...
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David Bateman <dbateman@free.fr>
parents:
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164 columns(a) - 1), newline ];
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parents:
diff changeset
165 else
7581
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John W. Eaton <jwe@octave.org>
parents: 7580
diff changeset
166 template = [precision, repmat([delim, precision], 1, columns(a)-1),...
7580
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David Bateman <dbateman@free.fr>
parents:
diff changeset
167 newline];
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David Bateman <dbateman@free.fr>
parents:
diff changeset
168 endif
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David Bateman <dbateman@free.fr>
parents:
diff changeset
169 if (c > 0)
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David Bateman <dbateman@free.fr>
parents:
diff changeset
170 template = [repmat(delim, 1, c), template];
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David Bateman <dbateman@free.fr>
parents:
diff changeset
171 endif
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David Bateman <dbateman@free.fr>
parents:
diff changeset
172 if (iscomplex (a))
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David Bateman <dbateman@free.fr>
parents:
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173 a = a.';
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David Bateman <dbateman@free.fr>
parents:
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174 b = zeros (2*rows(a), columns (a));
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David Bateman <dbateman@free.fr>
parents:
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175 b(1: 2 : end, :) = real (a);
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David Bateman <dbateman@free.fr>
parents:
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176 b(2: 2 : end, :) = imag (a);
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David Bateman <dbateman@free.fr>
parents:
diff changeset
177 fprintf (fid, template, b);
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David Bateman <dbateman@free.fr>
parents:
diff changeset
178 else
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David Bateman <dbateman@free.fr>
parents:
diff changeset
179 fprintf (fid, template, a.');
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David Bateman <dbateman@free.fr>
parents:
diff changeset
180 endif
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David Bateman <dbateman@free.fr>
parents:
diff changeset
181 fclose (fid);
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David Bateman <dbateman@free.fr>
parents:
diff changeset
182 endif
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David Bateman <dbateman@free.fr>
parents:
diff changeset
183 endfunction
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David Bateman <dbateman@free.fr>
parents:
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184
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David Bateman <dbateman@free.fr>
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185 %!test
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David Bateman <dbateman@free.fr>
parents:
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186 %! f = tmpnam();
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David Bateman <dbateman@free.fr>
parents:
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187 %! dlmwrite(f,[1,2;3,4],'precision','%5.2f','newline','unix','roffset',1,'coffset',1);
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David Bateman <dbateman@free.fr>
parents:
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188 %! fid = fopen(f,"rt");
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David Bateman <dbateman@free.fr>
parents:
diff changeset
189 %! f1 = char(fread(fid,Inf,'char')');
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David Bateman <dbateman@free.fr>
parents:
diff changeset
190 %! fclose(fid);
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David Bateman <dbateman@free.fr>
parents:
diff changeset
191 %! dlmwrite(f,[5,6],'precision','%5.2f','newline','unix','coffset',1,'delimiter',',','-append');
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David Bateman <dbateman@free.fr>
parents:
diff changeset
192 %! fid = fopen(f,"rt");
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David Bateman <dbateman@free.fr>
parents:
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193 %! f2 = char(fread(fid,Inf,'char')');
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David Bateman <dbateman@free.fr>
parents:
diff changeset
194 %! fclose(fid);
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David Bateman <dbateman@free.fr>
parents:
diff changeset
195 %! unlink(f);
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David Bateman <dbateman@free.fr>
parents:
diff changeset
196 %!
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David Bateman <dbateman@free.fr>
parents:
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197 %! assert(f1,",,\n, 1.00, 2.00\n, 3.00, 4.00\n");
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David Bateman <dbateman@free.fr>
parents:
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198 %! assert(f2,",,\n, 1.00, 2.00\n, 3.00, 4.00\n, 5.00, 6.00\n");