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plotmatrix.m: Overhaul function to use new__plt_get_axis_arg__. * scripts/plot/plotmatrix.m: Overhaul function to use new__plt_get_axis_arg__. Redo docstring. Remove need_usage variable from __plotmatrix__.
author Rik <rik@octave.org>
date Wed, 24 Jul 2013 23:12:46 -0700
parents 78f57b14535c
children eaab03308c0b
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1 ## Copyright (C) 2007-2012 David Bateman
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 3 of the License, or (at
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8 ## your option) any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Function File} {} ezmeshc (@var{f})
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21 ## @deftypefnx {Function File} {} ezmeshc (@var{fx}, @var{fy}, @var{fz})
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22 ## @deftypefnx {Function File} {} ezmeshc (@dots{}, @var{dom})
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23 ## @deftypefnx {Function File} {} ezmeshc (@dots{}, @var{n})
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24 ## @deftypefnx {Function File} {} ezmeshc (@dots{}, "circ")
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25 ## @deftypefnx {Function File} {} ezmeshc (@var{hax}, @dots{})
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26 ## @deftypefnx {Function File} {@var{h} =} ezmeshc (@dots{})
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27 ##
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28 ## Plot the mesh and contour lines defined by a function.
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29 ##
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30 ## @var{f} is a string, inline function, or function handle with two arguments
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31 ## defining the function. By default the plot is over the meshed domain
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32 ## @code{-2*pi <= @var{x} | @var{y} <= 2*pi} with 60 points in each dimension.
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33 ##
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34 ## If three functions are passed, then plot the parametrically defined
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35 ## function @code{[@var{fx} (@var{s}, @var{t}), @var{fy} (@var{s}, @var{t}),
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36 ## @var{fz} (@var{s}, @var{t})]}.
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37 ##
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38 ## If @var{dom} is a two element vector, it represents the minimum and maximum
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39 ## values of both @var{x} and @var{y}. If @var{dom} is a four element vector,
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40 ## then the minimum and maximum values are @code{[xmin xmax ymin ymax]}.
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41 ##
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42 ## @var{n} is a scalar defining the number of points to use in each dimension.
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43 ##
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44 ## If the argument "circ" is given, then the function is plotted over a disk
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45 ## centered on the middle of the domain @var{dom}.
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46 ##
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47 ## The optional return value @var{h} is a 2-element vector with a graphics
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48 ## handle for the created mesh plot and a second handle for the created contour
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49 ## plot.
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50 ##
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51 ## Example: 2-argument function
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52 ##
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53 ## @example
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54 ## @group
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55 ## f = @@(x,y) sqrt (abs (x .* y)) ./ (1 + x.^2 + y.^2);
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56 ## ezmeshc (f, [-3, 3]);
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57 ## @end group
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58 ## @end example
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59 ##
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60 ## @seealso{meshc, ezmesh, ezplot, ezsurf, ezsurfc, hidden}
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61 ## @end deftypefn
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62
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63 function h = ezmeshc (varargin)
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64
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65 [htmp, needusage] = __ezplot__ ("meshc", varargin{:});
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66
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67 if (needusage)
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68 print_usage ();
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69 endif
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70
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71 if (nargout > 0)
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72 h = htmp;
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73 endif
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74
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75 endfunction
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76
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78 %!demo
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79 %! clf;
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80 %! colormap ('default');
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81 %! f = @(x,y) sqrt (abs (x .* y)) ./ (1 + x.^2 + y.^2);
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82 %! ezmeshc (f, [-3, 3]);
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83