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1 ## Copyright (C) 2008 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{val} =} gnuplot_binary () |
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21 ## @deftypefnx {Loadable Function} {@var{old_val} =} gnuplot_binary (@var{new_val}) |
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22 ## Query or set the name of the program invoked by the plot command. |
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23 ## The default value @code{\"gnuplot\"}. @xref{Installation}. |
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24 ## @end deftypefn |
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25 |
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26 ## Author: jwe |
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27 |
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28 function retval = gnuplot_binary (new_val) |
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29 |
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30 persistent gp_binary = %OCTAVE_CONF_GNUPLOT%; |
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31 |
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32 if (nargout > 0 || nargin == 0) |
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33 retval = gp_binary; |
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34 endif |
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35 |
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36 if (nargin == 1) |
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37 if (ischar (new_val)) |
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38 if (! isempty (new_val)) |
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39 gp_binary = new_val; |
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40 else |
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41 error ("gnuplot_binary: value must not be empty"); |
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42 endif |
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43 else |
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44 error ("gnuplot_binary: expecting arg to be a character string"); |
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45 endif |
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46 elseif (nargin > 1) |
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47 print_usage (); |
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48 endif |
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49 |
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50 endfunction |
