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annotate scripts/plot/util/private/__gnuplot_get_var__.m @ 17572:7bb76a22cde1

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maint: Split scripts/plot directory into 4 pieces. scripts/gui : user-interface functions scripts/plot/appearance : functions controlling plot appearance scripts/plot/draw : plotting functions which produce graphs scripts/plot/util : low-level plotting functions and utilities. * scripts/gui/guidata.m, scripts/gui/guihandles.m, scripts/gui/module.mk, scripts/gui/private/__file_filter__.m, scripts/gui/private/__fltk_file_filter__.m, scripts/gui/private/__is_function__.m, scripts/gui/private/__uigetdir_fltk__.m, scripts/gui/private/__uigetfile_fltk__.m, scripts/gui/private/__uiobject_split_args__.m, scripts/gui/private/__uiputfile_fltk__.m, scripts/gui/uicontextmenu.m, scripts/gui/uicontrol.m, scripts/gui/uigetdir.m, scripts/gui/uigetfile.m, scripts/gui/uimenu.m, scripts/gui/uipanel.m, scripts/gui/uipushtool.m, scripts/gui/uiputfile.m, scripts/gui/uiresume.m, scripts/gui/uitoggletool.m, scripts/gui/uitoolbar.m, scripts/gui/uiwait.m, scripts/gui/waitbar.m, scripts/gui/waitforbuttonpress.m: Moved from scripts/plot to scripts/gui * scripts/plot/appearance/__clabel__.m, scripts/plot/appearance/__getlegenddata__.m, scripts/plot/appearance/axis.m, scripts/plot/appearance/box.m, scripts/plot/appearance/caxis.m, scripts/plot/appearance/clabel.m, scripts/plot/appearance/daspect.m, scripts/plot/appearance/diffuse.m, scripts/plot/appearance/grid.m, scripts/plot/appearance/gtext.m, scripts/plot/appearance/hidden.m, scripts/plot/appearance/legend.m, scripts/plot/appearance/orient.m, scripts/plot/appearance/pbaspect.m, scripts/plot/appearance/private/__axis_label__.m, scripts/plot/appearance/private/__axis_limits__.m, scripts/plot/appearance/shading.m, scripts/plot/appearance/specular.m, scripts/plot/appearance/text.m, scripts/plot/appearance/title.m, scripts/plot/appearance/view.m, scripts/plot/appearance/whitebg.m, scripts/plot/appearance/xlabel.m, scripts/plot/appearance/xlim.m, scripts/plot/appearance/ylabel.m, scripts/plot/appearance/ylim.m, scripts/plot/appearance/zlabel.m, scripts/plot/appearance/zlim.m: Moved from scripts/plot to subdir appearance. * scripts/plot/draw/area.m, scripts/plot/draw/bar.m, scripts/plot/draw/barh.m, scripts/plot/draw/colorbar.m, scripts/plot/draw/comet.m, scripts/plot/draw/comet3.m, scripts/plot/draw/compass.m, scripts/plot/draw/contour.m, scripts/plot/draw/contour3.m, scripts/plot/draw/contourc.m, scripts/plot/draw/contourf.m, scripts/plot/draw/cylinder.m, scripts/plot/draw/ellipsoid.m, scripts/plot/draw/errorbar.m, scripts/plot/draw/ezcontour.m, scripts/plot/draw/ezcontourf.m, scripts/plot/draw/ezmesh.m, scripts/plot/draw/ezmeshc.m, scripts/plot/draw/ezplot.m, scripts/plot/draw/ezplot3.m, scripts/plot/draw/ezpolar.m, scripts/plot/draw/ezsurf.m, scripts/plot/draw/ezsurfc.m, scripts/plot/draw/feather.m, scripts/plot/draw/fill.m, scripts/plot/draw/fplot.m, scripts/plot/draw/hist.m, scripts/plot/draw/isocolors.m, scripts/plot/draw/isonormals.m, scripts/plot/draw/isosurface.m, scripts/plot/draw/line.m, scripts/plot/draw/loglog.m, scripts/plot/draw/loglogerr.m, scripts/plot/draw/mesh.m, scripts/plot/draw/meshc.m, scripts/plot/draw/meshz.m, scripts/plot/draw/pareto.m, scripts/plot/draw/patch.m, scripts/plot/draw/pcolor.m, scripts/plot/draw/peaks.m, scripts/plot/draw/pie.m, scripts/plot/draw/pie3.m, scripts/plot/draw/plot.m, scripts/plot/draw/plot3.m, scripts/plot/draw/plotmatrix.m, scripts/plot/draw/plotyy.m, scripts/plot/draw/polar.m, scripts/plot/draw/private/__add_datasource__.m, scripts/plot/draw/private/__bar__.m, scripts/plot/draw/private/__contour__.m, scripts/plot/draw/private/__errcomm__.m, scripts/plot/draw/private/__errplot__.m, scripts/plot/draw/private/__ezplot__.m, scripts/plot/draw/private/__interp_cube__.m, scripts/plot/draw/private/__line__.m, scripts/plot/draw/private/__marching_cube__.m, scripts/plot/draw/private/__patch__.m, scripts/plot/draw/private/__pie__.m, scripts/plot/draw/private/__plt__.m, scripts/plot/draw/private/__quiver__.m, scripts/plot/draw/private/__scatter__.m, scripts/plot/draw/private/__stem__.m, scripts/plot/draw/quiver.m, scripts/plot/draw/quiver3.m, scripts/plot/draw/rectangle.m, scripts/plot/draw/ribbon.m, scripts/plot/draw/rose.m, scripts/plot/draw/scatter.m, scripts/plot/draw/scatter3.m, scripts/plot/draw/semilogx.m, scripts/plot/draw/semilogxerr.m, scripts/plot/draw/semilogy.m, scripts/plot/draw/semilogyerr.m, scripts/plot/draw/shrinkfaces.m, scripts/plot/draw/slice.m, scripts/plot/draw/sombrero.m, scripts/plot/draw/sphere.m, scripts/plot/draw/stairs.m, scripts/plot/draw/stem.m, scripts/plot/draw/stem3.m, scripts/plot/draw/stemleaf.m, scripts/plot/draw/surf.m, scripts/plot/draw/surface.m, scripts/plot/draw/surfc.m, scripts/plot/draw/surfl.m, scripts/plot/draw/surfnorm.m, scripts/plot/draw/tetramesh.m, scripts/plot/draw/trimesh.m, scripts/plot/draw/triplot.m, scripts/plot/draw/trisurf.m, scripts/plot/draw/waterfall.m: Moved from plot/ to subdir draw. * scripts/plot/util/__actual_axis_position__.m, scripts/plot/util/__default_plot_options__.m, scripts/plot/util/__gnuplot_drawnow__.m, scripts/plot/util/__next_line_color__.m, scripts/plot/util/__next_line_style__.m, scripts/plot/util/__plt_get_axis_arg__.m, scripts/plot/util/__pltopt__.m, scripts/plot/util/allchild.m, scripts/plot/util/ancestor.m, scripts/plot/util/axes.m, scripts/plot/util/cla.m, scripts/plot/util/clf.m, scripts/plot/util/close.m, scripts/plot/util/closereq.m, scripts/plot/util/colstyle.m, scripts/plot/util/copyobj.m, scripts/plot/util/figure.m, scripts/plot/util/findall.m, scripts/plot/util/findfigs.m, scripts/plot/util/findobj.m, scripts/plot/util/gca.m, scripts/plot/util/gcbf.m, scripts/plot/util/gcbo.m, scripts/plot/util/gcf.m, scripts/plot/util/gco.m, scripts/plot/util/ginput.m, scripts/plot/util/gnuplot_binary.in, scripts/plot/util/graphics_toolkit.m, scripts/plot/util/hdl2struct.m, scripts/plot/util/hggroup.m, scripts/plot/util/hold.m, scripts/plot/util/isaxes.m, scripts/plot/util/isfigure.m, scripts/plot/util/ishghandle.m, scripts/plot/util/ishold.m, scripts/plot/util/isprop.m, scripts/plot/util/linkprop.m, scripts/plot/util/meshgrid.m, scripts/plot/util/ndgrid.m, scripts/plot/util/newplot.m, scripts/plot/util/print.m, scripts/plot/util/printd.m, scripts/plot/util/private/__add_default_menu__.m, scripts/plot/util/private/__fltk_ginput__.m, scripts/plot/util/private/__fltk_print__.m, scripts/plot/util/private/__ghostscript__.m, scripts/plot/util/private/__gnuplot_get_var__.m, scripts/plot/util/private/__gnuplot_ginput__.m, scripts/plot/util/private/__gnuplot_has_feature__.m, scripts/plot/util/private/__gnuplot_has_terminal__.m, scripts/plot/util/private/__gnuplot_open_stream__.m, scripts/plot/util/private/__gnuplot_print__.m, scripts/plot/util/private/__gnuplot_version__.m, scripts/plot/util/private/__go_draw_axes__.m, scripts/plot/util/private/__go_draw_figure__.m, scripts/plot/util/private/__print_parse_opts__.m, scripts/plot/util/private/__tight_eps_bbox__.m, scripts/plot/util/refresh.m, scripts/plot/util/refreshdata.m, scripts/plot/util/saveas.m, scripts/plot/util/shg.m, scripts/plot/util/struct2hdl.m, scripts/plot/util/subplot.m: Moved from plot to subdir util. * etc/HACKING: Updated directory structure info. * scripts/Makefile.am, scripts/plot/appearance/module.mk, scripts/plot/draw/module.mk, scripts/plot/util/module.mk: Added new directories to build system.
author Rik <rik@octave.org>
date Fri, 04 Oct 2013 17:09:08 -0700
parents scripts/plot/private/__gnuplot_get_var__.m@abf384f5d243
children d63878346099
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1 ## Copyright (C) 2009-2012 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
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Function File} {@var{value} =} __gnuplot_get_var__ (@var{h}, @var{name}, @var{fmt})
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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: 2009-02-07
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26
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27 function gp_var_value = __gnuplot_get_var__ (h, gp_var_name, fmt = "")
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28
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29 if (numel (h) == 1 && isfigure (h))
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30 if (isempty (get (gcf, "__plot_stream__")))
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31 ostream = __gnuplot_open_stream__ (2, h);
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32 else
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33 ostream = get (h, "__plot_stream__");
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34 endif
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35 else
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36 ostream = h;
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37 endif
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38 if (numel (ostream) < 1)
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39 error ("__gnuplot_get_var__: stream to gnuplot not open");
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40 elseif (ispc ())
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41 if (numel (ostream) == 1)
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42 error ("__gnuplot_get_var__: Need mkfifo that is not implemented under Windows");
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43 endif
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44 use_mkfifo = false;
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45 istream = ostream(2);
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46 ostream = ostream(1);
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47 else
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48 use_mkfifo = true;
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49 ostream = ostream(1);
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50 endif
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51
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52 if (use_mkfifo)
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53 gpin_name = tmpnam ();
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54
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55 ## Mode: 0600 == 6*8*8
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56 [err, msg] = mkfifo (gpin_name, 6*8*8);
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57
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58 if (err)
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59 error ("__gnuplot_get_var__: Can not make FIFO (%s)", msg);
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60 endif
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61 endif
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62
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63 gp_var_name = strtrim (gp_var_name);
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64 n = min (strfind (gp_var_name, " "), strfind (gp_var_name, ",")) - 1;
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65 if (isempty (n))
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66 n = numel (gp_var_name);
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67 endif
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68
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69 unwind_protect
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70
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71 ## Notes: Variables may be undefined if user closes gnuplot by "q"
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72 ## or Alt-F4. Further, this abrupt close also requires the leading
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73 ## "\n" on the next line.
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74 if (use_mkfifo)
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75 fprintf (ostream, "\nset print \"%s\";\n", gpin_name);
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76 fflush (ostream);
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77 [gpin, err] = fopen (gpin_name, "r");
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78 if (err)
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79 ## Try a second time, and then give an error.
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80 [gpin, err] = fopen (gpin_name, "r");
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81 endif
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82 if (err)
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83 error ("__gnuplot_get_var__: can not open FIFO");
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84 endif
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85 gp_cmd = sprintf ("\nif (exists(\"%s\")) print %s; else print NaN\n",
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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86 gp_var_name(1:n), gp_var_name);
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
87 fputs (ostream, gp_cmd);
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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88
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
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89 ## Close output file, to force it to be flushed
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
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parents:
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90 fputs (ostream, "set print;\n");
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
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91 fflush (ostream);
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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92
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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93 ## Now read from fifo.
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Ben Abbott <bpabbott@mac.com>
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94 reading = true;
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
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95 str = {};
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
96 while (reading)
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
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97 str{end+1} = fgets (gpin);
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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98 if (isnumeric (str{end}) && (str{end} == -1))
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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99 reading = false;
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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100 str = str(1:(end-1));
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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101 endif
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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102 endwhile
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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103 str = strcat (str{:});
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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104 fclose (gpin);
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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105 else
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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106 ## Direct gnuplot to print to <STDOUT>
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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107 fprintf (ostream, "set print \"-\";\n");
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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108 fflush (ostream);
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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109 gp_cmd = sprintf ("\nif (exists(\"%s\")) print \"OCTAVE: \", %s; else print NaN\n",
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
110 gp_var_name(1:n), gp_var_name);
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
111 fputs (ostream, gp_cmd);
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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112 fflush (ostream);
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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113 ## Direct gnuplot to print to <STDERR>
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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114 fputs (ostream, "set print;\n");
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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115 fflush (ostream);
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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116
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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117 str = {};
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
118 while (isempty (str))
16108
3cce6b4e0f7c Update gnuplot plotting scripts for faster or more modern synta
Rik <rik@octave.org>
parents: 14138
diff changeset
119 str = fread (istream, "*char")';
9491
ac5e381f7a1c __gnuplot_get_var__: if read fails to return data, sleep before trying again
Olli Saarela <olli.saarela@gmail.com>
parents: 9283
diff changeset
120 if (isempty (str))
10549
95c3e38098bf Untabify .m scripts
Rik <code@nomad.inbox5.com>
parents: 9491
diff changeset
121 sleep (0.05);
95c3e38098bf Untabify .m scripts
Rik <code@nomad.inbox5.com>
parents: 9491
diff changeset
122 else
11032
c9b0a75b02e8 Make all regexp in Octave compatible with both POSIX and PCRE.
Rik <octave@nomad.inbox5.com>
parents: 10549
diff changeset
123 str = regexp (str, 'OCTAVE:.*', "match");
9001
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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124 str = str{end}(8:end);
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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125 endif
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
126 fclear (istream);
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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127 endwhile
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
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128 endif
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
129
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
130 ## Strip out EOLs and the continuation character "|"
16108
3cce6b4e0f7c Update gnuplot plotting scripts for faster or more modern synta
Rik <rik@octave.org>
parents: 14138
diff changeset
131 str(str=="\n" | str=="\r") = "";
9001
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
132 n_continue = strfind (str, " \\ ");
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
133 if (! isempty (n_continue))
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
134 str(n_continue+1) = "";
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
135 endif
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
136
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
137 if (isempty (fmt))
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
138 gp_var_value = strtrim (str);
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
139 else
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
140 gp_var_value = sscanf (str, fmt);
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
141 endif
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
142
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
143 unwind_protect_cleanup
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
144 if (use_mkfifo)
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
145 unlink (gpin_name);
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
146 endif
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
147 end_unwind_protect
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
148
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
149 endfunction
b3268a0458f2 __gnuplot_get_var__.m: Add function to get gnuplot variables.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
150