Mercurial > octave
view scripts/plot/draw/comet.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 | 516bb87ea72e |
children | bac0d6f07a3e |
line wrap: on
line source
## Copyright (C) 2008-2015 Ben Abbott ## ## 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 {} {} comet (@var{y}) ## @deftypefnx {} {} comet (@var{x}, @var{y}) ## @deftypefnx {} {} comet (@var{x}, @var{y}, @var{p}) ## @deftypefnx {} {} comet (@var{hax}, @dots{}) ## Produce a simple comet style animation along the trajectory provided by ## the input coordinate vectors (@var{x}, @var{y}). ## ## If @var{x} is not specified it defaults to the indices of @var{y}. ## ## The speed of the comet may be controlled by @var{p}, which represents the ## time each point is displayed before moving to the next one. The default for ## @var{p} is 0.1 seconds. ## ## If the first argument @var{hax} is an axes handle, then plot into this axis, ## rather than the current axes returned by @code{gca}. ## @seealso{comet3} ## @end deftypefn ## Author: Ben Abbott bpabbott@mac.com ## Created: 2008-09-21 function comet (varargin) [hax, varargin, nargin] = __plt_get_axis_arg__ ("comet", varargin{:}); if (nargin == 0) print_usage (); elseif (nargin == 1) y = varargin{1}; x = 1:numel (y); p = 0.1; elseif (nargin == 2) x = varargin{1}; y = varargin{2}; p = 0.1; elseif (nargin == 3) x = varargin{1}; y = varargin{2}; p = varargin{3}; endif oldfig = []; if (! isempty (hax)) oldfig = get (0, "currentfigure"); endif unwind_protect hax = newplot (hax); limits = [min(x), max(x), min(y), max(y)]; num = numel (y); dn = round (num/10); hl = plot (x(1), y(1), "color", "r", "marker", "none", x(1), y(1), "color", "g", "marker", "none", x(1), y(1), "color", "b", "marker", "o"); axis (limits); # set manual limits to speed up plotting for n = 2:(num+dn); m = n - dn; m = max ([m, 1]); k = min ([n, num]); set (hl(1), "xdata", x(1:m), "ydata", y(1:m)); set (hl(2), "xdata", x(m:k), "ydata", y(m:k)); set (hl(3), "xdata", x(k), "ydata", y(k)); drawnow (); pause (p); endfor unwind_protect_cleanup if (! isempty (oldfig)) set (0, "currentfigure", oldfig); endif end_unwind_protect endfunction %!demo %! clf; %! title ("comet() animation"); %! hold on; %! t = 0:.1:2*pi; %! x = cos (2*t) .* (cos (t).^2); %! y = sin (2*t) .* (sin (t).^2); %! comet (x, y, 0.05); %! hold off;