Mercurial > octave-nkf
view scripts/image/bone.m @ 20645:395140e53656
Fix regression in svg output and simplify viewport handling (bug #44765)
* gl2ps-renderer.cc (glps-renderer::draw): remove check for GL2PS_NO_FEEDBACK, it it always true after EndViewport
* gl2ps-renderer.h (glps-renderer::draw_axes): call gl2psBegin(End)Viewport for every axes and check for GL2PS_NO_FEEDBACK after each axes.
* gl2ps-renderer.h (glps-renderer::draw_axes):remove unnecessary "naxes" attribute
author | Pantxo Diribarne <pantxo.diribarne@gmail.com> |
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date | Mon, 12 Oct 2015 20:49:04 +0200 |
parents | 7503499a252b |
children |
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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 {Function File} {@var{map} =} bone () ## @deftypefnx {Function File} {@var{map} =} bone (@var{n}) ## Create color colormap. This colormap varies from black to white with ## gray-blue shades. ## ## 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> ## PKG_ADD: colormap ("register", "bone"); ## PKG_DEL: colormap ("unregister", "bone"); function map = bone (n = rows (colormap ())) if (nargin > 1) print_usage (); elseif (! isscalar (n)) error ("bone: N must be a scalar"); endif n = double (n); if (n == 1) map = [1/8 1/8 1/8]; elseif (n == 2) map = [1/16 1/8 1/8 1 1 1 ]; elseif (n > 2) x = [0:n-1]' / (n-1); idx = floor (3/4*n); nel = n - idx + 1; # number of elements rem = mod (n, 8); switch (rem) case {2, 4} base = 1 / (16 + 2*(n-rem)); case {5, 7} base = 1 / (24 + 2*(n-rem)); otherwise base = 0; endswitch r(1:idx,1) = 7/8 * x(1:idx); r(idx:n,1) = linspace (7/8 * x(idx) + base, 1, nel); idx = floor (3/8 * n); nel = idx + 1; g(1:idx,1) = 7/8 * x(1:idx); g(idx:2*idx,1) = linspace (7/8 * x(idx), 7/8 * x(2*idx) + 1/8, nel); g(2*idx+1:n,1) = 7/8 * x(2*idx+1:n) + 1/8; base = 1 / (8*idx); nel = idx; b(1:idx,1) = linspace (base, 7/8 * x(idx) + 1/8, nel); b(idx:n,1) = 7/8 * x(idx:n) + 1/8; map = [r, g, b]; else map = zeros (0, 3); endif endfunction %!demo %! ## Show the 'bone' colormap as an image %! image (1:64, linspace (0, 1, 64), repmat ((1:64)', 1, 64)); %! axis ([1, 64, 0, 1], "ticy", "xy"); %! colormap (bone (64));