Mercurial > hg > octave-nkf
annotate doc/interpreter/plotimages.m @ 14119:94e2a76f1e5a stable
doc: Final grammarcheck and spellcheck before 3.6.0 release.
* container.txi, aspell-octave.en.pws, expr.txi, vectorize.txi, accumarray.m,
accumdim.m, interpft.m, strread.m, parseparams.m, warning_ids.m, cellfun.cc,
help.cc: grammarcheck and spellcheck docstrings.
| author | Rik <octave@nomad.inbox5.com> |
|---|---|
| date | Thu, 29 Dec 2011 06:05:00 -0800 |
| parents | 8ac9687dbe9f |
| children | 72c96de7a403 |
| rev | line source |
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| 11523 | 1 ## Copyright (C) 2007-2011 John W. Eaton and David Bateman |
| 7018 | 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 | |
| 6888 | 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 (); |
| 7257 | 23 if (strcmp (typ, "png")) |
| 24 set (0, "defaulttextfontname", "*"); | |
| 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 |
| 7256 | 32 if (strcmp(typ , "txt")) |
| 33 image_as_txt(nm); | |
| 34 elseif (strcmp (nm, "plot")) | |
| 6888 | 35 x = -10:0.1:10; |
| 36 plot (x, sin (x)); | |
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37 print (cstrcat (nm, ".", typ), d_typ) |
| 6888 | 38 elseif (strcmp (nm, "hist")) |
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39 rand ("state", 2); |
| 6888 | 40 hist (randn (10000, 1), 30); |
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41 print (cstrcat (nm, ".", typ), d_typ) |
| 6888 | 42 elseif (strcmp (nm, "errorbar")) |
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43 rand ("state", 2); |
| 6888 | 44 x = 0:0.1:10; |
| 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) |
| 6888 | 51 elseif (strcmp (nm, "polar")) |
| 52 polar (0:0.1:10*pi, 0:0.1:10*pi); | |
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53 print (cstrcat (nm, ".", typ), d_typ) |
| 6888 | 54 elseif (strcmp (nm, "mesh")) |
| 55 tx = ty = linspace (-8, 8, 41)'; | |
| 56 [xx, yy] = meshgrid (tx, ty); | |
| 57 r = sqrt (xx .^ 2 + yy .^ 2) + eps; | |
| 58 tz = sin (r) ./ r; | |
| 59 mesh (tx, ty, tz); | |
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60 print (cstrcat (nm, ".", typ), d_typ) |
| 6888 | 61 elseif (strcmp (nm, "plot3")) |
| 62 t = 0:0.1:10*pi; | |
| 63 r = linspace (0, 1, numel (t)); | |
| 64 z = linspace (0, 1, numel (t)); | |
| 65 plot3 (r.*sin(t), r.*cos(t), z); | |
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66 print (cstrcat (nm, ".", typ), d_typ) |
| 7189 | 67 elseif (strcmp (nm, "extended")) |
| 68 x = 0:0.01:3; | |
| 69 plot(x,erf(x)); | |
| 70 hold on; | |
| 71 plot(x,x,"r"); | |
| 72 axis([0, 3, 0, 1]); | |
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73 text(0.65, 0.6175, cstrcat('\leftarrow x = {2/\surd\pi {\fontsize{16}', |
| 7189 | 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) |
| 6888 | 76 else |
| 77 error ("unrecognized plot requested"); | |
| 78 endif | |
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79 hide_output (); |
| 6888 | 80 endfunction |
| 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 () |
| 6888 | 95 f = figure (1); |
| 96 set (f, "visible", "off"); | |
| 97 endfunction | |
| 7256 | 98 |
| 99 ## generate something for the texinfo @image command to process | |
| 100 function image_as_txt(nm) | |
| 101 fid = fopen (sprintf ("%s.txt", nm), "wt"); | |
| 102 fputs (fid, "\n"); | |
| 103 fputs (fid, "+---------------------------------+\n"); | |
| 104 fputs (fid, "| Image unavailable in text mode. |\n"); | |
| 105 fputs (fid, "+---------------------------------+\n"); | |
| 106 fclose (fid); | |
| 107 endfunction |