Mercurial > octave-nkf
view scripts/plot/draw/ezcontour.m @ 20266:83792dd9bcc1
Use in-place operators in m-files where possible.
* scripts/audio/@audioplayer/set.m, scripts/audio/@audiorecorder/set.m,
scripts/audio/mu2lin.m, scripts/elfun/cosd.m, scripts/general/del2.m,
scripts/general/profexplore.m, scripts/general/quadl.m, scripts/general/rat.m,
scripts/general/rotdim.m, scripts/help/get_first_help_sentence.m,
scripts/help/private/__strip_html_tags__.m, scripts/image/cubehelix.m,
scripts/io/textread.m, scripts/linear-algebra/duplication_matrix.m,
scripts/linear-algebra/housh.m, scripts/linear-algebra/krylov.m,
scripts/linear-algebra/logm.m, scripts/linear-algebra/normest.m,
scripts/linear-algebra/onenormest.m, scripts/optimization/fminsearch.m,
scripts/optimization/lsqnonneg.m, scripts/optimization/qp.m,
scripts/plot/appearance/annotation.m, scripts/plot/appearance/axis.m,
scripts/plot/appearance/legend.m, scripts/plot/appearance/specular.m,
scripts/plot/draw/colorbar.m, scripts/plot/draw/hist.m,
scripts/plot/draw/plotmatrix.m, scripts/plot/draw/private/__stem__.m,
scripts/plot/util/__actual_axis_position__.m,
scripts/plot/util/__gnuplot_drawnow__.m, scripts/plot/util/findobj.m,
scripts/plot/util/print.m, scripts/plot/util/private/__go_draw_axes__.m,
scripts/plot/util/private/__print_parse_opts__.m, scripts/plot/util/rotate.m,
scripts/polynomial/pchip.m, scripts/polynomial/polyaffine.m,
scripts/polynomial/polyder.m, scripts/polynomial/private/__splinefit__.m,
scripts/polynomial/residue.m, scripts/signal/arch_fit.m,
scripts/signal/arch_rnd.m, scripts/signal/bartlett.m,
scripts/signal/blackman.m, scripts/signal/freqz.m, scripts/signal/hamming.m,
scripts/signal/hanning.m, scripts/signal/spectral_adf.m,
scripts/signal/spectral_xdf.m, scripts/signal/stft.m,
scripts/sparse/bicgstab.m, scripts/sparse/cgs.m,
scripts/sparse/private/__sprand_impl__.m, scripts/sparse/qmr.m,
scripts/sparse/sprandsym.m, scripts/sparse/svds.m, scripts/specfun/legendre.m,
scripts/special-matrix/gallery.m, scripts/statistics/base/gls.m,
scripts/statistics/models/logistic_regression.m,
scripts/statistics/tests/kruskal_wallis_test.m,
scripts/statistics/tests/manova.m, scripts/statistics/tests/wilcoxon_test.m,
scripts/time/datevec.m:
Use in-place operators in m-files where possible.
author | Rik <rik@octave.org> |
---|---|
date | Tue, 26 May 2015 21:07:42 -0700 |
parents | 4197fc428c7d |
children |
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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 {Function File} {} ezcontour (@var{f}) ## @deftypefnx {Function File} {} ezcontour (@dots{}, @var{dom}) ## @deftypefnx {Function File} {} ezcontour (@dots{}, @var{n}) ## @deftypefnx {Function File} {} ezcontour (@var{hax}, @dots{}) ## @deftypefnx {Function File} {@var{h} =} ezcontour (@dots{}) ## ## Plot the contour lines of a function. ## ## @var{f} is a string, inline function, or function handle with two arguments ## defining the function. By default the plot is over the meshed domain ## @code{-2*pi <= @var{x} | @var{y} <= 2*pi} with 60 points in each dimension. ## ## If @var{dom} is a two element vector, it represents the minimum and maximum ## values of both @var{x} and @var{y}. If @var{dom} is a four element vector, ## then the minimum and maximum values are @code{[xmin xmax ymin ymax]}. ## ## @var{n} is a scalar defining the number of points to use in each dimension. ## ## 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 return value @var{h} is a graphics handle to the created plot. ## ## Example: ## ## @example ## @group ## f = @@(x,y) sqrt (abs (x .* y)) ./ (1 + x.^2 + y.^2); ## ezcontour (f, [-3, 3]); ## @end group ## @end example ## ## @seealso{contour, ezcontourf, ezplot, ezmeshc, ezsurfc} ## @end deftypefn function h = ezcontour (varargin) [htmp, needusage] = __ezplot__ ("contour", varargin{:}); if (needusage) print_usage (); endif if (nargout > 0) h = htmp; endif endfunction %!demo %! clf; %! colormap ('default'); %! f = @(x,y) sqrt (abs (x .* y)) ./ (1 + x.^2 + y.^2); %! ezcontour (f, [-3, 3]);