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