Mercurial > hg > octave-nkf
annotate scripts/plot/ezcontourf.m @ 15536:2e8eb9ac43a5 stable rc-3-6-4-0
3.6.4-rc0 release candidate
* configure.ac (AC_INIT): Version is now 3.6.2-rc0.
(OCTAVE_RELEASE_DATE): Now 2012-05-11.
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Wed, 17 Oct 2012 10:05:44 -0400 |
| parents | 4d917a6a858b |
| children | ce2b59a6d0e5 |
| rev | line source |
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1 ## Copyright (C) 2007-2012 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 -*- | |
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20 ## @deftypefn {Function File} {} ezcontourf (@var{f}) |
| 7337 | 21 ## @deftypefnx {Function File} {} ezcontourf (@dots{}, @var{dom}) |
| 22 ## @deftypefnx {Function File} {} ezcontourf (@dots{}, @var{n}) | |
| 23 ## @deftypefnx {Function File} {} ezcontourf (@var{h}, @dots{}) | |
| 24 ## @deftypefnx {Function File} {@var{h} =} ezcontourf (@dots{}) | |
| 25 ## | |
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26 ## Plot the filled contour lines of a function. @var{f} is a string, inline |
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27 ## function or function handle with two arguments defining the function. By |
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28 ## default the plot is over the domain @code{-2*pi < @var{x} < 2*pi} and |
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29 ## @code{-2*pi < @var{y} < 2*pi} with 60 points in each dimension. |
| 7337 | 30 ## |
| 31 ## If @var{dom} is a two element vector, it represents the minimum and maximum | |
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32 ## value of both @var{x} and @var{y}. If @var{dom} is a four element vector, |
| 7337 | 33 ## then the minimum and maximum value of @var{x} and @var{y} are specify |
| 34 ## separately. | |
| 35 ## | |
| 36 ## @var{n} is a scalar defining the number of points to use in each dimension. | |
| 37 ## | |
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38 ## The optional return value @var{h} is a graphics handle to the created plot. |
| 7337 | 39 ## |
| 40 ## @example | |
| 41 ## @group | |
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42 ## f = @@(x,y) sqrt (abs (x .* y)) ./ (1 + x.^2 + y.^2); |
| 7337 | 43 ## ezcontourf (f, [-3, 3]); |
| 44 ## @end group | |
| 45 ## @end example | |
| 46 ## | |
| 47 ## @seealso{ezplot, ezcontour, ezsurfc, ezmeshc} | |
| 48 ## @end deftypefn | |
| 49 | |
| 50 function retval = ezcontourf (varargin) | |
| 51 | |
| 52 [h, needusage] = __ezplot__ ("contourf", varargin{:}); | |
| 53 | |
| 54 if (needusage) | |
| 55 print_usage (); | |
| 56 endif | |
| 57 | |
| 58 if (nargout > 0) | |
| 59 retval = h; | |
| 60 endif | |
| 61 endfunction | |
| 62 | |
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63 |
| 7337 | 64 %!demo |
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65 %! clf |
| 7337 | 66 %! f = @(x,y) sqrt(abs(x .* y)) ./ (1 + x.^2 + y.^2); |
| 67 %! ezcontourf (f, [-3, 3]); |