Mercurial > octave
view scripts/plot/draw/contour3.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 | f7f97d7e9294 |
children | bac0d6f07a3e |
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## Copyright (C) 2007-2015 David BAteman ## ## 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 {} {} contour3 (@var{z}) ## @deftypefnx {} {} contour3 (@var{z}, @var{vn}) ## @deftypefnx {} {} contour3 (@var{x}, @var{y}, @var{z}) ## @deftypefnx {} {} contour3 (@var{x}, @var{y}, @var{z}, @var{vn}) ## @deftypefnx {} {} contour3 (@dots{}, @var{style}) ## @deftypefnx {} {} contour3 (@var{hax}, @dots{}) ## @deftypefnx {} {[@var{c}, @var{h}] =} contour3 (@dots{}) ## Create a 3-D contour plot. ## ## @code{contour3} plots level curves (contour lines) of the matrix @var{z} ## at a Z level corresponding to each contour. This is in contrast to ## @code{contour} which plots all of the contour lines at the same Z level ## and produces a 2-D plot. ## ## The level curves are taken from the contour matrix @var{c} computed by ## @code{contourc} for the same arguments; see the latter for their ## interpretation. ## ## The appearance of contour lines can be defined with a line style @var{style} ## in the same manner as @code{plot}. Only line style and color are used; ## Any markers defined by @var{style} are ignored. ## ## If the first argument @var{hax} is an axes handle, then plot into this axis, ## rather than the current axes returned by @code{gca}. ## ## The optional output @var{c} are the contour levels in @code{contourc} ## format. ## ## The optional return value @var{h} is a graphics handle to the hggroup ## comprising the contour lines. ## ## Example: ## ## @example ## @group ## contour3 (peaks (19)); ## colormap cool; ## hold on; ## surf (peaks (19), "facecolor", "none", "edgecolor", "black"); ## @end group ## @end example ## ## @seealso{contour, contourc, contourf, clabel, meshc, surfc, caxis, colormap, plot} ## @end deftypefn function [c, h] = contour3 (varargin) [hax, varargin, nargin] = __plt_get_axis_arg__ ("contour3", varargin{:}); oldfig = []; if (! isempty (hax)) oldfig = get (0, "currentfigure"); endif unwind_protect hax = newplot (hax); [ctmp, htmp] = __contour__ (hax, "auto", varargin{:}); unwind_protect_cleanup if (! isempty (oldfig)) set (0, "currentfigure", oldfig); endif end_unwind_protect if (! ishold ()) set (hax, "view", [-37.5, 30], "box", "off", "xgrid", "on", "ygrid", "on", "zgrid", "on"); endif if (nargout > 0) c = ctmp; h = htmp; endif endfunction %!demo %! clf; %! colormap (cool (64)); %! surf (peaks (19), "facecolor", "none", "edgecolor", [0.85 0.85 0.85]); %! hold on; %! contour3 (peaks (19)); %! hold off; %! axis tight; %! zlim auto; %! view (315, 17); %! title ({"contour3 of peaks() function", "gray surf() shows peaks function"});