7018
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1 ## Copyright (C) 2007 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 |
6888
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19 function plotimages (nm, typ) |
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20 bury_output (); |
7257
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21 if (strcmp (typ, "png")) |
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22 set (0, "defaulttextfontname", "*"); |
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23 endif |
7256
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24 if (strcmp(typ , "txt")) |
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25 image_as_txt(nm); |
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26 elseif (strcmp (nm, "plot")) |
6888
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27 x = -10:0.1:10; |
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28 plot (x, sin (x)); |
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29 print (strcat (nm, ".", typ), strcat ("-d", typ)) |
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30 elseif (strcmp (nm, "hist")) |
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31 hist (randn (10000, 1), 30); |
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32 print (strcat (nm, ".", typ), strcat ("-d", typ)) |
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33 elseif (strcmp (nm, "errorbar")) |
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34 x = 0:0.1:10; |
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35 y = sin (x); |
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36 yp = 0.1 .* randn (size (x)); |
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37 ym = -0.1 .* randn (size (x)); |
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38 errorbar (x, sin (x), ym, yp); |
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39 print (strcat (nm, ".", typ), strcat ("-d", typ)) |
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40 elseif (strcmp (nm, "polar")) |
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41 polar (0:0.1:10*pi, 0:0.1:10*pi); |
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42 print (strcat (nm, ".", typ), strcat ("-d", typ)) |
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43 elseif (strcmp (nm, "mesh")) |
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44 tx = ty = linspace (-8, 8, 41)'; |
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45 [xx, yy] = meshgrid (tx, ty); |
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46 r = sqrt (xx .^ 2 + yy .^ 2) + eps; |
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47 tz = sin (r) ./ r; |
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48 mesh (tx, ty, tz); |
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49 print (strcat (nm, ".", typ), strcat ("-d", typ)) |
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50 elseif (strcmp (nm, "plot3")) |
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51 t = 0:0.1:10*pi; |
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52 r = linspace (0, 1, numel (t)); |
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53 z = linspace (0, 1, numel (t)); |
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54 plot3 (r.*sin(t), r.*cos(t), z); |
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55 print (strcat (nm, ".", typ), strcat ("-d", typ)) |
7189
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56 elseif (strcmp (nm, "extended")) |
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57 x = 0:0.01:3; |
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58 plot(x,erf(x)); |
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59 hold on; |
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60 plot(x,x,"r"); |
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61 axis([0, 3, 0, 1]); |
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62 text(0.65, 0.6175, strcat('\leftarrow x = {2/\surd\pi {\fontsize{16}', |
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63 '\int_{\fontsize{8}0}^{\fontsize{8}x}} e^{-t^2} dt} = 0.6175')) |
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64 print (strcat (nm, ".", typ), strcat ("-d", typ)) |
6888
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65 else |
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66 error ("unrecognized plot requested"); |
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67 endif |
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68 bury_output (); |
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69 endfunction |
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70 |
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71 function bury_output () |
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72 f = figure (1); |
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73 set (f, "visible", "off"); |
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74 endfunction |
7256
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75 |
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76 ## generate something for the texinfo @image command to process |
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77 function image_as_txt(nm) |
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78 fid = fopen (sprintf ("%s.txt", nm), "wt"); |
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79 fputs (fid, "\n"); |
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80 fputs (fid, "+---------------------------------+\n"); |
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81 fputs (fid, "| Image unavailable in text mode. |\n"); |
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82 fputs (fid, "+---------------------------------+\n"); |
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83 fclose (fid); |
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84 endfunction |