1 ## Copyright (C) 2009-2012 Ben Abbott
3 ## This file is part of Octave.
5 ## Octave is free software; you can redistribute it and/or modify it
6 ## under the terms of the GNU General Public License as published by
7 ## the Free Software Foundation; either version 3 of the License, or (at
8 ## your option) any later version.
10 ## Octave is distributed in the hope that it will be useful, but
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 ## General Public License for more details.
15 ## You should have received a copy of the GNU General Public License
16 ## along with Octave; see the file COPYING. If not, see
17 ## <http://www.gnu.org/licenses/>.
20 ## @deftypefn {Function File} {@var{stream} =} __gnuplot_open_stream__ (@var{npipes}, @var{h})
21 ## Undocumented internal function.
24 ## Author: Ben Abbott <bpabbott@mac.com>
25 ## Created: 2009-04-11
27 function plot_stream = __gnuplot_open_stream__ (npipes, h)
28 [prog, args] = gnuplot_binary ();
30 [plot_stream(1), plot_stream(2), pid] = popen2 (prog, args{:});
32 error ("__gnuplot_open_stream__: failed to open connection to gnuplot");
37 plot_stream = popen (sprintf ("%s ", prog, args{:}), "w");
39 error ("__gnuplot_open_stream__: failed to open connection to gnuplot");
43 set (h, "__plot_stream__", plot_stream);