Mercurial > octave
view scripts/plot/draw/contourf.m @ 33129:92b8822976fe
clim.m: New function identical to caxis, but more clearly named.
* NEWS.10.md: Announce addition of new function.
* scripts/plot/appearance/clim.m: New function.
* scripts/plot/appearance/module.mk: Add clim.m to build system.
* scripts/legacy/caxis.m: Moved from scripts/plot/appearance.
* scripts/legacy/module.mk: Add caxis.m to build system.
* plot.txi: Add clim to manual and remove caxis.
* imagesc.m, axis.m, text.m, contour.m, contour3.m, contourf.m, fill.m,
fill3.m, mesh.m, meshc.m, meshz.m, patch.m, pcolor.m, surf.m, surfc.m,
surfl.m, trimesh.m, trisurf.m, waterfall.m, caxis.m: Update all Seealso
links to point to clim rather than caxis.
author | Rik <rik@octave.org> |
---|---|
date | Sat, 02 Mar 2024 19:59:16 -0800 |
parents | 2e484f9f1f18 |
children |
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######################################################################## ## ## Copyright (C) 2003-2024 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this ## distribution or <https://octave.org/copyright/>. ## ## 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 ## <https://www.gnu.org/licenses/>. ## ######################################################################## ## -*- texinfo -*- ## @deftypefn {} {} contourf (@var{z}) ## @deftypefnx {} {} contourf (@var{z}, @var{vn}) ## @deftypefnx {} {} contourf (@var{x}, @var{y}, @var{z}) ## @deftypefnx {} {} contourf (@var{x}, @var{y}, @var{z}, @var{vn}) ## @deftypefnx {} {} contourf (@dots{}, @var{style}) ## @deftypefnx {} {} contourf (@var{hax}, @dots{}) ## @deftypefnx {} {[@var{c}, @var{h}] =} contourf (@dots{}) ## Create a 2-D contour plot with filled intervals. ## ## Plot level curves (contour lines) of the matrix @var{z} and fill the region ## between lines with colors from the current colormap. ## ## 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 axes, ## rather than the current axes returned by @code{gca}. ## ## The optional output @var{c} contains the contour levels in @code{contourc} ## format. ## ## The optional return value @var{h} is a graphics handle to the hggroup ## comprising the contour lines. ## ## The following example plots filled contours of the @code{peaks} function. ## ## @example ## @group ## [x, y, z] = peaks (50); ## contourf (x, y, z, -7:9) ## @end group ## @end example ## @seealso{ezcontourf, contour, contourc, contour3, clabel, meshc, surfc, ## clim, colormap, plot} ## @end deftypefn function [c, h] = contourf (varargin) [hax, varargin] = __plt_get_axis_arg__ ("contour", varargin{:}); oldfig = []; if (! isempty (hax)) oldfig = get (0, "currentfigure"); endif unwind_protect hax = newplot (hax); [ctmp, htmp] = __contour__ (hax, "none", "fill", "on", "linecolor", "black", varargin{:}); if (! ishold ()) set (hax, "box", "on"); endif unwind_protect_cleanup if (! isempty (oldfig)) set (0, "currentfigure", oldfig); endif end_unwind_protect if (nargout > 0) c = ctmp; h = htmp; endif endfunction %!demo %! clf; %! colormap ("default"); %! [x, y, z] = peaks (50); %! contourf (x, y, z, -7:9); %! title ({"contourf() plot (filled contour lines)"; "Z = peaks()"}); %!demo %! clf; %! colormap ("default"); %! [theta, r] = meshgrid (linspace (0,2*pi,64), linspace (0,1,64)); %! [X, Y] = pol2cart (theta, r); %! Z = sin (2*theta) .* (1-r); %! contourf (X, Y, abs (Z), 10); %! title ({"contourf() plot"; "polar fcn: Z = sin (2*theta) * (1-r)"}); %!demo %! clf; %! colormap ("default"); %! x = linspace (-2, 2); %! [x, y] = meshgrid (x); %! z = sqrt (x.^2 + y.^2) ./ (x.^2 + y.^2 + 1); %! contourf (x, y, z, [0.4, 0.4]); %! title ("Hole should be filled with the background color");