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maint: update copyright notices for 2012
author John W. Eaton <jwe@octave.org>
date Mon, 02 Jan 2012 14:25:41 -0500
parents 8ac9687dbe9f
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14138
72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
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1 ## Copyright (C) 2007-2012 John W. Eaton and David Bateman
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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 function plotimages (nm, typ)
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20 graphics_toolkit ("gnuplot");
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21 set_print_size ();
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22 hide_output ();
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23 if (strcmp (typ, "png"))
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24 set (0, "defaulttextfontname", "*");
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25 endif
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26 if (strcmp (typ, "eps"))
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27 d_typ = "-depsc2";
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28 else
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29 d_typ = cstrcat ("-d", typ);
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30 endif
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31
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32 if (strcmp(typ , "txt"))
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33 image_as_txt(nm);
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34 elseif (strcmp (nm, "plot"))
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35 x = -10:0.1:10;
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36 plot (x, sin (x));
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37 print (cstrcat (nm, ".", typ), d_typ)
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38 elseif (strcmp (nm, "hist"))
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39 rand ("state", 2);
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40 hist (randn (10000, 1), 30);
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41 print (cstrcat (nm, ".", typ), d_typ)
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42 elseif (strcmp (nm, "errorbar"))
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43 rand ("state", 2);
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44 x = 0:0.1:10;
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45 y = sin (x);
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46 yl = 0.1 .* rand (size (x));
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47 yu = 0.1 .* rand (size (x));
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48 errorbar (x, sin (x), yl, yu);
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49 axis ([0, 10, -1.1, 1.1]);
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50 print (cstrcat (nm, ".", typ), d_typ)
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51 elseif (strcmp (nm, "polar"))
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52 polar (0:0.1:10*pi, 0:0.1:10*pi);
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53 print (cstrcat (nm, ".", typ), d_typ)
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54 elseif (strcmp (nm, "mesh"))
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55 tx = ty = linspace (-8, 8, 41)';
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56 [xx, yy] = meshgrid (tx, ty);
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57 r = sqrt (xx .^ 2 + yy .^ 2) + eps;
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58 tz = sin (r) ./ r;
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59 mesh (tx, ty, tz);
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60 print (cstrcat (nm, ".", typ), d_typ)
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61 elseif (strcmp (nm, "plot3"))
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62 t = 0:0.1:10*pi;
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63 r = linspace (0, 1, numel (t));
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64 z = linspace (0, 1, numel (t));
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65 plot3 (r.*sin(t), r.*cos(t), z);
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66 print (cstrcat (nm, ".", typ), d_typ)
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67 elseif (strcmp (nm, "extended"))
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68 x = 0:0.01:3;
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69 plot(x,erf(x));
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70 hold on;
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71 plot(x,x,"r");
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72 axis([0, 3, 0, 1]);
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73 text(0.65, 0.6175, cstrcat('\leftarrow x = {2/\surd\pi {\fontsize{16}',
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74 '\int_{\fontsize{8}0}^{\fontsize{8}x}} e^{-t^2} dt} = 0.6175'))
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75 print (cstrcat (nm, ".", typ), d_typ)
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76 else
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77 error ("unrecognized plot requested");
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78 endif
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79 hide_output ();
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80 endfunction
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81
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82 function set_print_size ()
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83 image_size = [5.0, 3.5]; # in inches, 16:9 format
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84 border = 0; # For postscript use 50/72
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85 set (0, "defaultfigurepapertype", "<custom>");
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86 set (0, "defaultfigurepaperorientation", "landscape");
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87 set (0, "defaultfigurepapersize", image_size + 2*border);
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88 set (0, "defaultfigurepaperposition", [border, border, image_size]);
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89 endfunction
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90
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91 ## Use this function before plotting commands and after every call to
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92 ## print since print() resets output to stdout (unfortunately, gnpulot
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93 ## can't pop output as it can the terminal type).
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94 function hide_output ()
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95 f = figure (1);
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96 set (f, "visible", "off");
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97 endfunction
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98
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99 ## generate something for the texinfo @image command to process
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100 function image_as_txt(nm)
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101 fid = fopen (sprintf ("%s.txt", nm), "wt");
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102 fputs (fid, "\n");
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103 fputs (fid, "+---------------------------------+\n");
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104 fputs (fid, "| Image unavailable in text mode. |\n");
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105 fputs (fid, "+---------------------------------+\n");
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106 fclose (fid);
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107 endfunction