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view scripts/image/bone.m @ 22302:1c4cd12987f5
Use Octave syntax in graphics demos.
* inputdlg.m, listdlg.m, waitbar.m, autumn.m, bone.m, cool.m, copper.m,
cubehelix.m, flag.m, gray.m, hot.m, hsv.m, jet.m, lines.m, ocean.m, pink.m,
prism.m, rainbow.m, rgbplot.m, spring.m, summer.m, viridis.m, white.m,
winter.m, annotation.m, axis.m, clabel.m, daspect.m, datetick.m, grid.m,
legend.m, lighting.m, material.m, pbaspect.m, shading.m, text.m, xlim.m,
ylim.m, zlim.m, area.m, bar.m, barh.m, camlight.m, colorbar.m, comet.m,
comet3.m, contour.m, contour3.m, contourf.m, cylinder.m, ellipsoid.m,
errorbar.m, ezcontour.m, ezcontourf.m, ezmesh.m, ezmeshc.m, ezplot.m,
ezplot3.m, ezsurf.m, ezsurfc.m, feather.m, fill.m, fplot.m, isocaps.m,
isonormals.m, isosurface.m, light.m, line.m, loglog.m, loglogerr.m, mesh.m,
meshc.m, meshz.m, pareto.m, patch.m, pcolor.m, pie.m, pie3.m, plot.m, plot3.m,
plotmatrix.m, plotyy.m, polar.m, quiver.m, quiver3.m, rectangle.m, ribbon.m,
rose.m, scatter.m, scatter3.m, semilogx.m, semilogxerr.m, semilogy.m,
semilogyerr.m, shrinkfaces.m, slice.m, smooth3.m, sombrero.m, stairs.m, stem.m,
stem3.m, stemleaf.m, surf.m, surfc.m, surfl.m, surfnorm.m, tetramesh.m,
trimesh.m, triplot.m, trisurf.m, waterfall.m, copyobj.m, hold.m, linkaxes.m,
linkprop.m, printd.m, refreshdata.m, subplot.m, zoom.m, pcr.m, dump_demos.m:
Use Octave syntax in graphics demos.
author | Rik <rik@octave.org> |
---|---|
date | Mon, 15 Aug 2016 15:15:30 -0700 |
parents | 894239974868 |
children | bac0d6f07a3e |
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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} =} bone () ## @deftypefnx {} {@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> 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 profile and as an image %! cmap = bone (256); %! subplot (2, 1, 1); %! rgbplot (cmap, "composite"); %! subplot (2, 1, 2); %! rgbplot (cmap);