Mercurial > octave-nkf
view scripts/plot/draw/trimesh.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 | 9fc020886ae9 |
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} {} trimesh (@var{tri}, @var{x}, @var{y}, @var{z}, @var{c}) ## @deftypefnx {Function File} {} trimesh (@var{tri}, @var{x}, @var{y}, @var{z}) ## @deftypefnx {Function File} {} trimesh (@var{tri}, @var{x}, @var{y}) ## @deftypefnx {Function File} {} trimesh (@dots{}, @var{prop}, @var{val}, @dots{}) ## @deftypefnx {Function File} {@var{h} =} trimesh (@dots{}) ## Plot a 3-D triangular wireframe mesh. ## ## In contrast to @code{mesh}, which plots a mesh using rectangles, ## @code{trimesh} plots the mesh using triangles. ## ## @var{tri} is typically the output of a Delaunay triangulation over the ## grid of @var{x}, @var{y}. Every row of @var{tri} represents one triangle ## and contains three indices into [@var{x}, @var{y}] which are the ## vertices of the triangles in the x-y plane. @var{z} determines the ## height above the plane of each vertex. If no @var{z} input is given then ## the triangles are plotted as a 2-D figure. ## ## The color of the trimesh is computed by linearly scaling the @var{z} values ## to fit the range of the current colormap. Use @code{caxis} and/or ## change the colormap to control the appearance. ## ## Optionally, the color of the mesh can be specified independently of @var{z} ## by supplying a color matrix, @var{c}. If @var{z} has N elements, then ## @var{c} should be an Nx1 vector for colormap data or an Nx3 matrix for ## RGB data. ## ## Any property/value pairs are passed directly to the underlying patch object. ## ## The optional return value @var{h} is a graphics handle to the created patch ## object. ## @seealso{mesh, tetramesh, triplot, trisurf, delaunay, patch, hidden} ## @end deftypefn function h = trimesh (tri, x, y, z, varargin) if (nargin < 3) print_usage (); endif if (nargin == 3) htmp = triplot (tri, x, y); elseif (ischar (z)) htmp = triplot (tri, x, y, z, varargin{:}); else ## Process color argument if (nargin > 4 && isnumeric (varargin{1})) c = varargin{1}; varargin(1) = []; if (isvector (c)) if (numel (c) != numel (z)) error ("trimesh: C must have 'numel (Z)' elements"); endif c = c(:); elseif (rows (c) != numel (z) || columns (c) != 3) error ("trimesh: TrueColor C matrix must be 'numel (Z)' rows by 3 columns"); endif else c = z(:); endif hax = newplot (); ## Tag object as "trimesh" so that hidden() can find it. htmp = patch ("Vertices", [x(:), y(:), z(:)], "Faces", tri, "FaceVertexCdata", c, "EdgeColor", "flat", "FaceColor", "w", "Tag", "trimesh", varargin{:}); if (! ishold ()) set (hax, "view", [-37.5, 30], "box", "off", "xgrid", "on", "ygrid", "on", "zgrid", "on"); endif endif if (nargout > 0) h = htmp; endif endfunction %!demo %! clf; %! colormap ('default'); %! old_state = rand ('state'); %! restore_state = onCleanup (@() rand ('state', old_state)); %! rand ('state', 10); %! N = 10; %! x = 3 - 6 * rand (N, N); %! y = 3 - 6 * rand (N, N); %! z = peaks (x, y); %! tri = delaunay (x(:), y(:)); %! trimesh (tri, x(:), y(:), z(:)); ## Test input validation %!error trimesh () %!error trimesh (1) %!error trimesh (1,2) %!error <C must have 'numel \(Z\)' elements> trimesh (1,2,3,4,[5 6]) %!error <C must have 'numel \(Z\)' elements> trimesh (1,2,3,4,[5 6]') %!error <TrueColor C matrix must> trimesh ([1;1],[2;2],[3;3],[4;4],zeros(3,3)) %!error <TrueColor C matrix must> trimesh ([1;1],[2;2],[3;3],[4;4],zeros(2,2))