Mercurial > octave
view scripts/image/summer.m @ 21249:a032c6708f5c
fix filenames for distribution (bug #47122)
* liboctave/operators/module.mk (liboctafe_EXTRA_DIST): Fix names of
mx-ops, smx-ops, vx-ops files.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Thu, 11 Feb 2016 17:05:47 -0500 |
parents | 516bb87ea72e |
children | 894239974868 |
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## Copyright (C) 1999-2015 Kai Habel ## ## 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 3 of the License, 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, see ## <http://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {} {@var{map} =} summer () ## @deftypefnx {} {@var{map} =} summer (@var{n}) ## Create color colormap. This colormap varies from green to yellow. ## ## The argument @var{n} must be a scalar. ## If unspecified, the length of the current colormap, or 64, is used. ## @seealso{colormap} ## @end deftypefn ## Author: Kai Habel <kai.habel@gmx.de> ## Date: 06/03/2000 ## PKG_ADD: colormap ("register", "summer"); ## PKG_DEL: colormap ("unregister", "summer"); function map = summer (n = rows (colormap ())) if (nargin > 1) print_usage (); elseif (! isscalar (n)) error ("summer: N must be a scalar"); endif n = double (n); if (n == 1) map = [0, 0.5, 0.4]; elseif (n > 1) r = [0:(n-1)]' / (n - 1); g = 0.5 + r / 2; b = 0.4 * ones (n, 1); map = [r, g, b]; else map = zeros (0, 3); endif endfunction %!demo %! ## Show the 'summer' colormap profile and as an image %! cmap = summer (256); %! subplot (2, 1, 1); %! rgbplot (cmap, "composite"); %! subplot (2, 1, 2); %! rgbplot (cmap);