Mercurial > octave-nkf
view scripts/image/image.m @ 3202:44d82b369c78
[project @ 1998-10-29 20:27:57 by jwe]
author | jwe |
---|---|
date | Thu, 29 Oct 1998 20:28:02 +0000 |
parents | 8b262e771614 |
children | 36405da8e173 |
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## Copyright (C) 1996, 1997 John W. Eaton ## ## This file is part of Octave. ## ## Octave is free software; you can redistribute it and/or modify it ## under the terms of the GNU General Public License as published by ## the Free Software Foundation; either version 2, or (at your option) ## any later version. ## ## Octave is distributed in the hope that it will be useful, but ## WITHOUT ANY WARRANTY; without even the implied warranty of ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ## General Public License for more details. ## ## You should have received a copy of the GNU General Public License ## along with Octave; see the file COPYING. If not, write to the Free ## Software Foundation, 59 Temple Place - Suite 330, Boston, MA ## 02111-1307, USA. ## Display an octave image matrix. ## ## image (x) displays a matrix as a color image. The elements of x are ## indices into the current colormap and should have values between 1 ## and the length of the colormap. ## ## image (x, zoom) changes the zoom factor. The default value is 4. ## ## SEE ALSO: imshow, imagesc, colormap. ## Author: Tony Richardson <arichard@stark.cc.oh.us> ## Created: July 1994 ## Adapted-By: jwe function image (x, zoom) if (nargin == 0) ## Load Bobbie Jo Richardson (Born 3/16/94) x = loadimage ("default.img"); zoom = 2; elseif (nargin == 1) zoom = 4; elseif (nargin > 2) usage ("image (matrix, [zoom])"); endif ppm_name = tmpnam (); saveimage (ppm_name, x, "ppm"); ## Start the viewer. Try xv, then xloadimage. xv = sprintf ("xv -expand %f %s", zoom, ppm_name); xloadimage = sprintf ("xloadimage -zoom %f %s", zoom*100, ppm_name); rm = sprintf ("rm -f %s", ppm_name); ## Need to let the shell clean up the tmp file because we are putting ## the viewer in the background. command = sprintf ("( %s || %s && %s ) > /dev/null 2>&1 &", xv, xloadimage, rm); system (command); endfunction