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annotate scripts/plot/util/private/__gnuplot_has_feature__.m @ 20787:40ed9b46a800

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new octave_value::string_value method with optional error message * ov.h (octave_value::string_vector): New method. ov-base.cc, ov-base.h (octave_base_value::string_vector): New default method. ov-str-mat.cc, ov-str-mat.h (octave_char_matrix_str::string_value): New method.
author John W. Eaton <jwe@octave.org>
date Thu, 08 Oct 2015 16:43:22 -0400
parents 13ede127ec9a
children
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1 ## Copyright (C) 2009-2015 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{has_feature} =} __gnuplot_has_feature__ (@var{feature})
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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: 2009-01-27
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26
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27 function res = __gnuplot_has_feature__ (feature)
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28 persistent features = {"minimum_version",
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29 "x11_figure_position",
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30 "wxt_figure_size",
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31 "transparent_patches",
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32 "transparent_surface",
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33 "epslatex_implies_eps_filesuffix",
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34 "epslatexstandalone_terminal",
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35 "screen_coordinates_for_{lrtb}margin",
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36 "variable_GPVAL_TERMINALS",
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37 "key_has_font_properties",
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38 "windows_figure_position",
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39 "has_termoption_dashed"};
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40 persistent has_features;
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41
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42 if (isempty (has_features))
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43 try
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44 gnuplot_version = __gnuplot_version__ ();
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45 catch
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46 ## Don't throw an error if gnuplot isn't installed
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47 gnuplot_version = "0.0.0";
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48 end_try_catch
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49 versions = {"4.2.5", "4.2.5", "4.4", "4.4", "4.4", "4.2", "4.2", "4.4", "4.4", "4.4", "4.4", "4.3"};
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50 operators = {">=", ">=", ">=", ">=", ">=", ">=", ">=", ">=", ">=", ">=", ">=", ">="};
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51 have_features = false (size (features));
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52 for n = 1 : numel (have_features)
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53 has_features(n) = compare_versions (gnuplot_version, versions{n}, operators{n});
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54 endfor
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55 endif
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56
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57 n = find (strcmpi (feature, features));
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58 if (isempty (n))
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59 res = NaN;
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60 else
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61 res = has_features(n);
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62 endif
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63
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64 endfunction
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65