Mercurial > octave-nkf
view scripts/plot/draw/quiver3.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 | aa36fb998a4d |
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} {} quiver3 (@var{u}, @var{v}, @var{w}) ## @deftypefnx {Function File} {} quiver3 (@var{x}, @var{y}, @var{z}, @var{u}, @var{v}, @var{w}) ## @deftypefnx {Function File} {} quiver3 (@dots{}, @var{s}) ## @deftypefnx {Function File} {} quiver3 (@dots{}, @var{style}) ## @deftypefnx {Function File} {} quiver3 (@dots{}, "filled") ## @deftypefnx {Function File} {} quiver3 (@var{hax}, @dots{}) ## @deftypefnx {Function File} {@var{h} =} quiver3 (@dots{}) ## ## Plot a 3-D vector field with arrows. ## ## Plot the (@var{u}, @var{v}, @var{w}) components of a vector field in ## an (@var{x}, @var{y}, @var{z}) meshgrid. If the grid is uniform then ## @var{x}, @var{y}, and @var{z} can be specified as vectors. ## ## If @var{x}, @var{y}, and @var{z} are undefined they are assumed to be ## @code{(1:@var{m}, 1:@var{n}, 1:@var{p})} where @code{[@var{m}, @var{n}] = ## size (@var{u})} and @code{@var{p} = max (size (@var{w}))}. ## ## The variable @var{s} is a scalar defining a scaling factor to use for ## the arrows of the field relative to the mesh spacing. A value of 0 ## disables all scaling. The default value is 0.9. ## ## The style to use for the plot can be defined with a line style @var{style} ## of the same format as the @code{plot} command. ## If a marker is specified then markers at the grid points of the vectors are ## drawn rather than arrows. If the argument @qcode{"filled"} is given then the ## markers are filled. ## ## 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 a quiver object. ## A quiver object regroups the components of the quiver plot (body, arrow, ## and marker), and allows them to be changed together. ## ## @example ## @group ## [x, y, z] = peaks (25); ## surf (x, y, z); ## hold on; ## [u, v, w] = surfnorm (x, y, z / 10); ## h = quiver3 (x, y, z, u, v, w); ## set (h, "maxheadsize", 0.33); ## @end group ## @end example ## ## @seealso{quiver, compass, feather, plot} ## @end deftypefn function h = quiver3 (varargin) [hax, varargin, nargin] = __plt_get_axis_arg__ ("quiver3", varargin{:}); if (nargin < 2) print_usage (); endif oldfig = []; if (! isempty (hax)) oldfig = get (0, "currentfigure"); endif unwind_protect hax = newplot (hax); htmp = __quiver__ (hax, true, varargin{:}); if (! ishold (hax)) set (hax, "view", [-37.5, 30], "box", "off", "xgrid", "on", "ygrid", "on", "zgrid", "on"); endif unwind_protect_cleanup if (! isempty (oldfig)) set (0, "currentfigure", oldfig); endif end_unwind_protect if (nargout > 0) h = htmp; endif endfunction %!demo %! clf; %! colormap ('default'); %! [x, y, z] = peaks (25); %! surf (x, y, z); %! hold on; %! [u, v, w] = surfnorm (x, y, z / 10); %! h = quiver3 (x, y, z, u, v, w); %! set (h, 'maxheadsize', 0.25); %! hold off; %! title ('quiver3 of surface normals to peaks() function'); %!demo %! clf; %! colormap ('default'); %! [x, y, z] = peaks (25); %! surf (x, y, z); %! hold on; %! [u, v, w] = surfnorm (x, y, z / 10); %! h = quiver3 (x, y, z, u, v, w); %! set (h, 'maxheadsize', 0.25); %! hold off; %! shading interp; %! title ({'quiver3 of surface normals to peaks() function'; ... %! 'shading "interp"'});