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annotate scripts/plot/__gnuplot_open_stream__.m @ 11104:2c356a35d7f5

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fix copyright notices
author John W. Eaton <jwe@octave.org>
date Sun, 17 Oct 2010 23:43:42 -0400
parents c60a9e1a0372
children 1740012184f9
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4bb94a71913b __gnuplot_open_stream__.m: New function and its application.
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1 ## Copyright (C) 2009 Ben Abbott
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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} {@var{stream}} __gnuplot_open_stream__ (@var{npipes}, @var{h})
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21 ## Undocumented internal function.
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22 ## @end deftypefn
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23
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24 ## Author: Ben Abbott <bpabbott@mac.com>
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25 ## Created: 2009-04-11
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26
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27 function plot_stream = __gnuplot_open_stream__ (npipes, h)
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28 [prog, args] = gnuplot_binary ();
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29 if (npipes > 1)
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30 [plot_stream(1), plot_stream(2), pid] = popen2 (prog, args{:});
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31 if (pid < 0)
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32 error ("__gnuplot_open_stream__: failed to open connection to gnuplot.");
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33 else
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34 plot_stream(3) = pid;
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35 endif
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36 else
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37 plot_stream = popen (sprintf ("%s ", prog, args{:}), "w");
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38 if (plot_stream < 0)
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39 error ("__gnuplot_open_stream__: failed to open connection to gnuplot.");
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40 endif
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41 endif
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42 if (nargin > 1)
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43 set (h, "__plot_stream__", plot_stream);
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44 endif
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45 endfunction