Mercurial > hg > octave-nkf
annotate scripts/plot/gnuplot_drawnow.m @ 7680:a0ec02774303
Use popen2 for communication with gnuplot
| author | David Bateman <dbateman@free.fr> |
|---|---|
| date | Wed, 02 Apr 2008 13:29:19 -0400 |
| parents | 246f905cb984 |
| children | 1f429086565c |
| rev | line source |
|---|---|
| 7408 | 1 ## Copyright (C) 2005, 2006, 2007 John W. Eaton |
| 2 ## | |
| 3 ## This file is part of Octave. | |
| 4 ## | |
| 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. | |
| 9 ## | |
| 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. | |
| 14 ## | |
| 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/>. | |
| 18 | |
| 19 ## -*- texinfo -*- | |
| 20 ## @deftypefn {Function File} {} drawnow () | |
| 21 ## Update and display the current graphics. | |
| 22 ## | |
| 23 ## Octave automatically calls drawnow just before printing a prompt, | |
| 24 ## when @code{sleep} or @code{pause} is called, or while waiting for | |
| 25 ## command-line input. | |
| 26 ## @end deftypefn | |
| 27 | |
| 28 ## Author: jwe | |
| 29 | |
| 30 function gnuplot_drawnow (h, term, file, mono, debug_file) | |
| 31 | |
| 32 if (nargin < 4) | |
| 33 mono = false; | |
| 34 endif | |
| 35 | |
| 36 if (nargin >= 3 && nargin <= 5) | |
| 37 f = __get__ (h); | |
| 38 plot_stream = []; | |
| 39 fid = []; | |
| 40 unwind_protect | |
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Use popen2 for communication with gnuplot
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parents:
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41 [plot_stream, enhanced] = open_gnuplot_stream (1, [], term, file); |
| 7408 | 42 __go_draw_figure__ (f, plot_stream, enhanced, mono); |
| 43 if (nargin == 5) | |
| 44 fid = fopen (debug_file, "wb"); | |
| 45 enhanced = init_plot_stream (fid, [], term, file); | |
| 46 __go_draw_figure__ (f, fid, enhanced, mono); | |
| 47 endif | |
| 48 unwind_protect_cleanup | |
| 49 if (! isempty (plot_stream)) | |
| 50 pclose (plot_stream); | |
| 51 endif | |
| 52 if (! isempty (fid)) | |
| 53 fclose (fid); | |
| 54 endif | |
| 55 end_unwind_protect | |
| 56 elseif (nargin == 1) | |
| 57 f = __get__ (h); | |
| 58 plot_stream = f.__plot_stream__; | |
| 59 if (isempty (plot_stream)) | |
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60 [plot_stream, enhanced] = open_gnuplot_stream (2, h); |
| 7408 | 61 set (h, "__enhanced__", enhanced); |
| 62 else | |
| 63 enhanced = f.__enhanced__; | |
| 64 endif | |
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65 __go_draw_figure__ (f, plot_stream (1), enhanced, mono); |
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66 fflush (plot_stream (1)); |
| 7408 | 67 else |
| 68 print_usage (); | |
| 69 endif | |
| 70 | |
| 71 endfunction | |
| 72 | |
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73 function [plot_stream, enhanced] = open_gnuplot_stream (npipes, h, varargin) |
| 7408 | 74 |
| 75 cmd = gnuplot_binary (); | |
| 76 | |
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77 if (npipes > 1) |
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78 [plot_stream(1), plot_stream(2), pid] = popen2 (cmd); |
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79 if (pid < 0) |
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80 error ("drawnow: failed to open connection to gnuplot"); |
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81 endif |
| 7408 | 82 else |
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83 plot_stream = popen (cmd, "w"); |
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84 if (plot_stream < 0) |
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85 error ("drawnow: failed to open connection to gnuplot"); |
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86 endif |
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87 endif |
| 7408 | 88 |
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Use popen2 for communication with gnuplot
David Bateman <dbateman@free.fr>
parents:
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89 if (! isempty (h)) |
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Use popen2 for communication with gnuplot
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parents:
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90 set (h, "__plot_stream__", plot_stream); |
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a0ec02774303
Use popen2 for communication with gnuplot
David Bateman <dbateman@free.fr>
parents:
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91 endif |
| 7408 | 92 |
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7680
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Use popen2 for communication with gnuplot
David Bateman <dbateman@free.fr>
parents:
7408
diff
changeset
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93 enhanced = init_plot_stream (plot_stream (1), h, varargin{:}); |
| 7408 | 94 |
| 95 endfunction | |
| 96 | |
| 97 function enhanced = init_plot_stream (plot_stream, h, term, file) | |
| 98 | |
| 99 if (nargin == 4) | |
| 100 enhanced = enhanced_term (term); | |
| 101 if (! isempty (term)) | |
| 102 if (enhanced) | |
| 103 fprintf (plot_stream, "set terminal %s enhanced;\n", term); | |
| 104 else | |
| 105 fprintf (plot_stream, "set terminal %s;\n", term); | |
| 106 endif | |
| 107 endif | |
| 108 if (! isempty (file)) | |
| 109 fprintf (plot_stream, "set output \"%s\";\n", file); | |
| 110 endif | |
| 111 else | |
| 112 | |
| 113 ## Guess the terminal type. | |
| 114 term = getenv ("GNUTERM"); | |
| 115 if (isempty (term)) | |
| 116 if (! isempty (getenv ("DISPLAY"))) | |
| 117 term = "x11"; | |
| 118 elseif (! isunix ()) | |
| 119 term = "windows"; | |
| 120 else | |
| 121 ## This should really be checking for os x before setting | |
| 122 ## the terminal type to aqua, but nobody will notice because | |
| 123 ## every other unix will be using x11 and windows will be | |
| 124 ## using windows. Those diehards still running octave from | |
| 125 ## a linux console know how to set the GNUTERM variable. | |
| 126 term = "aqua"; | |
| 127 endif | |
| 128 endif | |
| 129 | |
| 130 enhanced = enhanced_term (term); | |
| 131 if (enhanced) | |
| 132 enh_str = "enhanced"; | |
| 133 else | |
| 134 enh_str = ""; | |
| 135 endif | |
| 136 | |
| 137 ## If no 'h' (why not?) then open the terminal as Figure 0. | |
| 138 if (isempty (h)) | |
| 139 h = 0; | |
| 140 endif | |
| 141 | |
| 142 if (strcmp (term, "x11")) | |
| 143 fprintf (plot_stream, "set terminal x11 %s title \"Figure %d\"\n", | |
| 144 enh_str, h); | |
| 145 elseif (strcmp (term, "aqua")) | |
| 146 ## Aqua doesn't understand the 'title' option despite what the | |
| 147 ## gnuplot 4.2 documentation says. | |
| 148 fprintf (plot_stream, "set terminal aqua %d %s\n", h, enh_str); | |
| 149 elseif (strcmp (term, "wxt")) | |
| 150 fprintf (plot_stream, "set terminal wxt %s title \"Figure %d\"\n", | |
| 151 enh_str, h); | |
| 152 | |
| 153 elseif (enhanced) | |
| 154 fprintf (plot_stream, "set terminal %s %s\n", term, enh_str); | |
| 155 endif | |
| 156 ## gnuplot will pick up the GNUTERM environment variable itself | |
| 157 ## so no need to set the terminal type if not also setting the | |
| 158 ## figure title or enhanced mode. | |
| 159 | |
| 160 endif | |
| 161 | |
| 162 endfunction | |
| 163 | |
| 164 function have_enhanced = enhanced_term (term) | |
| 165 persistent enhanced_terminals; | |
| 166 | |
| 167 if (isempty (enhanced_terminals)) | |
| 168 ## Don't include pstex, pslatex or epslatex here as the TeX commands | |
| 169 ## should not be interpreted in that case. | |
| 170 if (compare_versions (__gnuplot_version__ (), "4.0", ">")) | |
| 171 enhanced_terminals = {"aqua", "dumb", "png", "jpeg", "gif", "pm", ... | |
| 172 "windows", "wxt", "svg", "postscript", "x11", "pdf"}; | |
| 173 else | |
| 174 enhanced_terminals = {"x11", "postscript"}; | |
| 175 endif | |
| 176 endif | |
| 177 | |
| 178 term = tolower (term); | |
| 179 | |
| 180 have_enhanced = false; | |
| 181 for i = 1 : length (enhanced_terminals) | |
| 182 t = enhanced_terminals{i}; | |
| 183 if (strncmp (term, t, min (length (term), length (t)))) | |
| 184 have_enhanced = true; | |
| 185 break; | |
| 186 endif | |
| 187 endfor | |
| 188 endfunction |