Mercurial > octave
view scripts/image/lines.m @ 22323:bac0d6f07a3e
maint: Update copyright notices for 2016.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 17 Aug 2016 01:05:19 -0400 |
parents | 1c4cd12987f5 |
children | 638625a0186f |
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## Copyright (C) 2012-2016 Rik Wehbring ## ## 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} =} lines () ## @deftypefnx {} {@var{map} =} lines (@var{n}) ## Create color colormap. This colormap is composed of the list of colors ## in the current axes @qcode{"ColorOrder"} property. The default is blue, ## green, red, cyan, pink, yellow, and gray. ## ## The argument @var{n} must be a scalar. ## If unspecified, the length of the current colormap, or 64, is used. ## @seealso{colormap} ## @end deftypefn function map = lines (n = rows (colormap ())) if (nargin > 1) print_usage (); elseif (! isscalar (n)) error ("lines: N must be a scalar"); endif if (n == 1) map = [0, 0, 1]; elseif (n > 1) C = get (gca, "colororder"); nr = rows (C); map = C(rem (0:(n-1), nr) + 1, :); else map = zeros (0, 3); endif endfunction %!demo %! ## Show the 'lines' colormap profile and as an image %! cmap = lines (21); # default has 7 colors, therefore cycle 3 times %! subplot (2, 1, 1); %! rgbplot (cmap, "composite"); %! subplot (2, 1, 2); %! rgbplot (cmap);