Mercurial > octave
view scripts/image/gray.m @ 1122:22f8e6d62e54
[project @ 1995-02-20 21:57:16 by jwe]
author | jwe |
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date | Mon, 20 Feb 1995 21:57:16 +0000 |
parents | 56520a75b5b3 |
children | 611d403c7f3d |
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# Copyright (C) 1995 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, 675 Mass Ave, Cambridge, MA 02139, USA. function map = gray (number) # Colormap. # Written by Tony Richardson (amr@mpl.ucsd.edu) July 1994. if (nargin == 0) number = 64; elseif (nargin > 1) usage ("gray (number)"); endif gr = [0:(number-1)]'; map = [ gr, gr, gr ] / (number - 1); endfunction