Mercurial > hg > octave-lyh
annotate scripts/plot/contour3.m @ 12462:e4dbfe3019b1
Use PCRE regular expressions throughout Octave.
| author | Rik <octave@nomad.inbox5.com> |
|---|---|
| date | Sat, 19 Feb 2011 18:21:58 -0800 |
| parents | c792872f8942 |
| children | 22c50cbad2ce |
| rev | line source |
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| 11523 | 1 ## Copyright (C) 2007-2011 David BAteman |
| 7175 | 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} {} contour3 (@var{z}) |
| 7317 | 21 ## @deftypefnx {Function File} {} contour3 (@var{z}, @var{vn}) |
| 22 ## @deftypefnx {Function File} {} contour3 (@var{x}, @var{y}, @var{z}) | |
| 23 ## @deftypefnx {Function File} {} contour3 (@var{x}, @var{y}, @var{z}, @var{vn}) | |
| 24 ## @deftypefnx {Function File} {} contour3 (@dots{}, @var{style}) | |
| 25 ## @deftypefnx {Function File} {} contour3 (@var{h}, @dots{}) | |
| 7175 | 26 ## @deftypefnx {Function File} {[@var{c}, @var{h}] =} contour3 (@dots{}) |
| 27 ## Plot level curves (contour lines) of the matrix @var{z}, using the | |
| 28 ## contour matrix @var{c} computed by @code{contourc} from the same | |
| 29 ## arguments; see the latter for their interpretation. The contours are | |
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30 ## plotted at the Z level corresponding to their contour. The set of |
| 7175 | 31 ## contour levels, @var{c}, is only returned if requested. For example: |
| 32 ## | |
| 33 ## @example | |
| 34 ## @group | |
| 35 ## contour3 (peaks (19)); | |
| 36 ## hold on | |
| 8507 | 37 ## surface (peaks (19), "facecolor", "none", "EdgeColor", "black") |
| 7175 | 38 ## colormap hot |
| 39 ## @end group | |
| 40 ## @end example | |
| 41 ## | |
| 7317 | 42 ## The style to use for the plot can be defined with a line style @var{style} |
| 43 ## in a similar manner to the line styles used with the @code{plot} command. | |
| 44 ## Any markers defined by @var{style} are ignored. | |
| 45 ## | |
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46 ## The optional input and output argument @var{h} allows an axis handle to |
| 7175 | 47 ## be passed to @code{contour} and the handles to the contour objects to be |
| 48 ## returned. | |
| 49 ## @seealso{contourc, patch, plot} | |
| 50 ## @end deftypefn | |
| 51 | |
| 52 function [c, h] = contour3 (varargin) | |
| 53 | |
| 7216 | 54 [xh, varargin, nargin] = __plt_get_axis_arg__ ("contour3", varargin{:}); |
| 55 | |
| 7215 | 56 oldh = gca (); |
| 57 unwind_protect | |
| 7216 | 58 axes (xh); |
| 7175 | 59 newplot (); |
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60 [ctmp, htmp] = __contour__ (xh, "auto", varargin{:}); |
| 7215 | 61 unwind_protect_cleanup |
| 62 axes (oldh); | |
| 63 end_unwind_protect | |
| 7175 | 64 |
| 65 if (! ishold ()) | |
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contour3.m: Grid on be default for 3D plots.
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66 set (xh, "view", [-37.5, 30], |
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67 "xgrid", "on", "ygrid", "on", "zgrid", "on"); |
| 7175 | 68 endif |
| 69 | |
| 70 if (nargout > 0) | |
| 71 c = ctmp; | |
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72 h = htmp; |
| 7175 | 73 endif |
| 74 | |
| 75 endfunction | |
| 7245 | 76 |
| 77 %!demo | |
| 78 %! contour3 (peaks (19)); | |
| 79 %! hold on | |
| 8507 | 80 %! surface (peaks (19), "facecolor", "none", "edgecolor", "black") |
| 7245 | 81 %! colormap hot |
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contour3.m: Modify demo to avoid clipping mesh.
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82 %! axis tight |
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contour3.m: Modify demo to avoid clipping mesh.
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83 %! zlim auto |
| 7245 | 84 %! hold off |
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contour3.m: Modify demo to avoid clipping mesh.
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85 %! box off |