Mercurial > hg > octave-lyh
annotate scripts/plot/ezmeshc.m @ 9245:16f53d29049f
update copyright notices
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Fri, 22 May 2009 10:46:00 -0400 |
| parents | dbd0c77e575e |
| children | be55736a0783 |
| rev | line source |
|---|---|
| 9245 | 1 ## Copyright (C) 2007, 2009 David Bateman |
| 7337 | 2 ## |
| 3 ## This file is part of Octave. | |
| 4 ## | |
| 5 ## Octave is free software; you can redistribute it and/or modify it | |
| 6 ## under the terms of the GNU General Public License as published by | |
| 7 ## the Free Software Foundation; either version 3 of the License, or (at | |
| 8 ## your option) any later version. | |
| 9 ## | |
| 10 ## Octave is distributed in the hope that it will be useful, but | |
| 11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 ## General Public License for more details. | |
| 14 ## | |
| 15 ## You should have received a copy of the GNU General Public License | |
| 16 ## along with Octave; see the file COPYING. If not, see | |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 18 | |
| 19 ## -*- texinfo -*- | |
| 20 ## @deftypefn {Function File} {} ezmeshc (@var{f}) | |
| 21 ## @deftypefnx {Function File} {} ezmeshc (@var{fx}, @var{fy}, @var{fz}) | |
| 22 ## @deftypefnx {Function File} {} ezmeshc (@dots{}, @var{dom}) | |
| 23 ## @deftypefnx {Function File} {} ezmeshc (@dots{}, @var{n}) | |
| 24 ## @deftypefnx {Function File} {} ezmeshc (@dots{}, 'circ') | |
| 25 ## @deftypefnx {Function File} {} ezmeshc (@var{h}, @dots{}) | |
| 26 ## @deftypefnx {Function File} {@var{h} =} ezmeshc (@dots{}) | |
| 27 ## | |
|
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28 ## Plots the mesh and contour lines defined by a function. @var{f} is a string, |
| 7337 | 29 ## inline function or function handle with two arguments defining the function. |
| 30 ## By default the plot is over the domain @code{-2*pi < @var{x} < 2*pi} and | |
| 31 ## @code{-2*pi < @var{y} < 2*pi} with 60 points in each dimension. | |
| 32 ## | |
| 33 ## If @var{dom} is a two element vector, it represents the minimum and maximum | |
|
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34 ## value of both @var{x} and @var{y}. If @var{dom} is a four element vector, |
| 7337 | 35 ## then the minimum and maximum value of @var{x} and @var{y} are specify |
| 36 ## separately. | |
| 37 ## | |
| 38 ## @var{n} is a scalar defining the number of points to use in each dimension. | |
| 39 ## | |
| 40 ## If three functions are passed, then plot the parametrically defined | |
| 41 ## function @code{[@var{fx} (@var{s}, @var{t}), @var{fy} (@var{s}, @var{t}), | |
| 42 ## @var{fz} (@var{s}, @var{t})]}. | |
| 43 ## | |
| 44 ## If the argument 'circ' is given, then the function is plotted over a disk | |
| 45 ## centered on the middle of the domain @var{dom}. | |
| 46 ## | |
| 47 ## The optional return value @var{h} provides a list of handles to the | |
| 48 ## the parts of the vector field (body, arrow and marker). | |
| 49 ## | |
| 50 ## @example | |
| 51 ## @group | |
| 52 ## f = @@(x,y) sqrt(abs(x .* y)) ./ (1 + x.^2 + y.^2); | |
| 53 ## ezmeshc (f, [-3, 3]); | |
| 54 ## @end group | |
| 55 ## @end example | |
| 56 ## | |
| 57 ## @seealso{ezplot, ezsurfc, ezsurf, ezmesh} | |
| 58 ## @end deftypefn | |
| 59 | |
| 60 function retval = ezmeshc (varargin) | |
| 61 | |
| 62 [h, needusage] = __ezplot__ ("meshc", varargin{:}); | |
| 63 | |
| 64 if (needusage) | |
| 65 print_usage (); | |
| 66 endif | |
| 67 | |
| 68 if (nargout > 0) | |
| 69 retval = h; | |
| 70 endif | |
| 71 endfunction | |
| 72 | |
| 73 %!demo | |
| 74 %! f = @(x,y) sqrt(abs(x .* y)) ./ (1 + x.^2 + y.^2); | |
| 75 %! ezmeshc (f, [-3, 3]); |