Mercurial > octave
view scripts/plot/draw/comet.m @ 32074:03fe0b635d2e
quiver/quiver3: Overhaul input processing, validation, and add BISTs.
* scripts/plot/draw/private/__quiver__.m: Overhaul numeric input validation.
Simplify input classification using numeric input count switch statements
and avoid quiver3 miscount due to scale factor. Add error messages for all
valid numeric input combinations including vector x,y,z and scale factor.
Move newplot command from quiver/quiver3 into __quiver__ after numeric input
validation. Add hax as an output argument to return any changes back to
calling function.
* scripts/plot/draw/quiver.m: Remove newplot call. Update __quiver__ call
to include hax as a return variable. Update docstring with note that line
style and name-value pairs can both be provided but linstyle must appear
first. Add BISTs to check standard inputs with single and multiple arrows,
arrowhead shape, vector and array inputs, proper treatment of scaling factor
"off", some simple input styles, and input validation BISTs to cover all
numeric input errors. Added known failing BIST for linestyle+pair
arrowhead showing when it should stay off (bug #64143).
* scripts/plot/draw/quiver3.m: Remove newplot call. Update __quiver__ call
to include hax as a return variable. Update docstring with note that line
style and name-value pairs can both be provided but linstyle must appear
first. Add BISTs to check standard inputs with single and multiple arrows,
vector and array inputs, and input validation BISTs to cover all numeric
input errors.
* etc/NEWS.9.md: Update quiver/quiver3 improvement description under General
Improvements.
author | Nicholas R. Jankowski <jankowski.nicholas@gmail.com> |
---|---|
date | Wed, 03 May 2023 22:52:33 -0400 |
parents | 597f3ee61a48 |
children | 2e484f9f1f18 |
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######################################################################## ## ## Copyright (C) 2008-2023 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 {} {} 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 @code{5 / numel (@var{y})}. ## ## If the first argument @var{hax} is an axes handle, then plot into this axes, ## rather than the current axes returned by @code{gca}. ## @seealso{comet3} ## @end deftypefn function comet (varargin) [hax, varargin, nargin] = __plt_get_axis_arg__ ("comet", varargin{:}); if (nargin == 0 || nargin > 3) print_usage (); endif if (nargin == 1) y = varargin{1}; x = 1:numel (y); p = 5 / numel (y); elseif (nargin == 2) x = varargin{1}; y = varargin{2}; p = 5 / numel (y); 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 ## Initialize the timer t = p; timerid = tic (); 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)); pause (t - toc (timerid)); t += 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, .05); %! hold off;