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[project @ 1996-06-24 09:15:24 by jwe]
author jwe
date Mon, 24 Jun 1996 09:15:24 +0000
parents 5d29638dd524
children 2b5788792cad
comparison
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2302:470c856bf55a 2303:5cffc4b8de57
1 # Copyright (C) 1996 John W. Eaton 1 ### Copyright (C) 1996 John W. Eaton
2 # 2 ###
3 # This file is part of Octave. 3 ### This file is part of Octave.
4 # 4 ###
5 # Octave is free software; you can redistribute it and/or modify it 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 the 6 ### under the terms of the GNU General Public License as published by
7 # Free Software Foundation; either version 2, or (at your option) any 7 ### the Free Software Foundation; either version 2, or (at your option)
8 # later version. 8 ### any later version.
9 # 9 ###
10 # Octave is distributed in the hope that it will be useful, but WITHOUT 10 ### Octave is distributed in the hope that it will be useful, but
11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 ### WITHOUT ANY WARRANTY; without even the implied warranty of
12 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 ### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 # for more details. 13 ### General Public License for more details.
14 # 14 ###
15 # You should have received a copy of the GNU General Public License 15 ### You should have received a copy of the GNU General Public License
16 # along with Octave; see the file COPYING. If not, write to the Free 16 ### along with Octave; see the file COPYING. If not, write to the Free
17 # Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 17 ### Software Foundation, 59 Temple Place - Suite 330, Boston, MA
18 ### 02111-1307, USA.
18 19
19 function image (x, zoom) 20 function image (x, zoom)
20 21
21 # Display an octave image matrix. 22 ## Display an octave image matrix.
22 # 23 ##
23 # image (x) displays a matrix as a color image. The elements of x are 24 ## image (x) displays a matrix as a color image. The elements of x are
24 # indices into the current colormap and should have values between 1 25 ## indices into the current colormap and should have values between 1
25 # and the length of the colormap. 26 ## and the length of the colormap.
26 # 27 ##
27 # image (x, zoom) changes the zoom factor. The default value is 4. 28 ## image (x, zoom) changes the zoom factor. The default value is 4.
28 # 29 ##
29 # SEE ALSO: imshow, imagesc, colormap. 30 ## SEE ALSO: imshow, imagesc, colormap.
30 31
31 # Written by Tony Richardson (amr@mpl.ucsd.edu) July 1994. 32 ## Written by Tony Richardson (amr@mpl.ucsd.edu) July 1994.
32 33
33 if (nargin == 0) 34 if (nargin == 0)
34 # Load Bobbie Jo Richardson (Born 3/16/94) 35 ## Load Bobbie Jo Richardson (Born 3/16/94)
35 x = loadimage ("default.img"); 36 x = loadimage ("default.img");
36 zoom = 2; 37 zoom = 2;
37 elseif (nargin == 1) 38 elseif (nargin == 1)
38 zoom = 4; 39 zoom = 4;
39 elseif (nargin > 2) 40 elseif (nargin > 2)
40 usage ("image (matrix, [zoom])"); 41 usage ("image (matrix, [zoom])");
41 endif 42 endif
42 43
43 # XXX FIXME XXX -- we should use octave_tmp_file_name. 44 ## XXX FIXME XXX -- we should use octave_tmp_file_name.
44 45
45 rnd_str = num2str (fix (rand * 10000)); 46 rnd_str = num2str (fix (rand * 10000));
46 ppm_name = ["image.", rnd_str, ".ppm" ]; 47 ppm_name = ["image.", rnd_str, ".ppm" ];
47 48
48 saveimage (ppm_name, x, "ppm"); 49 saveimage (ppm_name, x, "ppm");
49 50
50 # Start the viewer. Try xv, then xloadimage. 51 ## Start the viewer. Try xv, then xloadimage.
51 52
52 xv = sprintf ("xv -expand %f %s", zoom, ppm_name); 53 xv = sprintf ("xv -expand %f %s", zoom, ppm_name);
53 xloadimage = sprintf ("xloadimage -zoom %f %s", zoom*100, ppm_name); 54 xloadimage = sprintf ("xloadimage -zoom %f %s", zoom*100, ppm_name);
54 rm = sprintf ("rm -f %s", ppm_name); 55 rm = sprintf ("rm -f %s", ppm_name);
55 56