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annotate scripts/plot/util/gnuplot_binary.in @ 18746:29f00c0d0657

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Fix double '-P' in print command to printer (bug #41957). * print.m: Expand documentation of latex and latexstandalone options. Change some of the documentation examples to use more useful, modern devices (jpg instead of HP DeskJet 550C). Use isempty to determine in there is a figure to print. Remove extra '-P' from print command going directly to printer.
author Michael Godfrey <michaeldgodfrey@gmail.com>
date Tue, 25 Mar 2014 17:00:41 +0000
parents d63878346099
children 4197fc428c7d
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d63878346099 maint: Update copyright notices for release.
John W. Eaton <jwe@octave.org>
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1 ## Copyright (C) 2008-2013 John W. Eaton
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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 {Loadable Function} {[@var{prog}, @var{args}] =} gnuplot_binary ()
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21 ## @deftypefnx {Loadable Function} {[@var{old_prog}, @var{old_args}] =} gnuplot_binary (@var{new_prog}, @var{arg1}, @dots{})
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22 ## Query or set the name of the program invoked by the plot command
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23 ## when the graphics toolkit is set to "gnuplot". Additional arguments to
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24 ## pass to the external plotting program may also be given.
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25 ## The default value is @qcode{"gnuplot"} with no additional arguments.
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26 ## @xref{Installation}.
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27 ## @seealso{graphics_toolkit}
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28 ## @end deftypefn
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29
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30 ## Author: jwe
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31
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32 function [prog, args] = gnuplot_binary (new_prog, varargin)
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33
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34 persistent gp_binary = %OCTAVE_CONF_GNUPLOT%;
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35 persistent gp_args = {};
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36
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37 if (nargout > 0 || nargin == 0)
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38 prog = gp_binary;
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39 args = gp_args;
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40 endif
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41
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42 if (nargin == 1)
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43 if (! ischar (new_prog) || isempty (new_prog))
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44 error ("gnuplot_binary: NEW_PROG must be a non-empty string");
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45 endif
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46 gp_binary = new_prog;
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47 endif
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48
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49 if (nargin > 1)
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50 if (! iscellstr (varargin))
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51 error ("gnuplot_binary: arguments must be character strings");
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52 endif
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53 gp_args = varargin;
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54 endif
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55
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56 endfunction
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57
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58
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59 %!test
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60 %! orig_val = gnuplot_binary ();
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61 %! old_val = gnuplot_binary ("X");
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62 %! assert (orig_val, old_val);
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63 %! assert (gnuplot_binary (), "X");
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64 %! gnuplot_binary (orig_val);
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65 %! assert (gnuplot_binary (), orig_val);