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test: Make surface demos reproducible by setting colormap to default at start of demo. * bicubic.m, interp2.m, interpn.m, griddata.m, image.m, axis.m, clabel.m, colorbar.m, contour.m, contourf.m, cylinder.m, ezcontour.m, ezcontourf.m, ezmesh.m, ezmeshc.m, ezsurf.m, ezsurfc.m, hold.m, pcolor.m, plotyy.m, quiver3.m, ribbon.m, shading.m, slice.m, sombrero.m, surf.m, surfc.m, surfnorm.m, trisurf.m: Set colormap to default at start of demos to make them reproducible.
author Rik <octave@nomad.inbox5.com>
date Sun, 22 Jan 2012 10:02:27 -0800
parents 11949c9795a0
children 1118d566bcd4
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14138
72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
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1 ## Copyright (C) 1996-2012 John W. Eaton
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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} {} surfc (@var{x}, @var{y}, @var{z})
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21 ## Plot a surface and contour given matrices @var{x}, and @var{y} from
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22 ## @code{meshgrid} and a matrix @var{z} corresponding to the @var{x} and
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23 ## @var{y} coordinates of the mesh. If @var{x} and @var{y} are vectors,
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24 ## then a typical vertex is (@var{x}(j), @var{y}(i), @var{z}(i,j)). Thus,
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25 ## columns of @var{z} correspond to different @var{x} values and rows of
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26 ## @var{z} correspond to different @var{y} values.
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27 ## @seealso{meshgrid, surf, contour}
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28 ## @end deftypefn
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29
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30 function h = surfc (varargin)
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31
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32 newplot ();
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33
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34 tmp = surface (varargin{:});
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35
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36 ax = get (tmp, "parent");
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37
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38 set (tmp, "facecolor", "flat");
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39
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40 if (! ishold ())
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41 set (ax, "view", [-37.5, 30],
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42 "xgrid", "on", "ygrid", "on", "zgrid", "on");
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43 endif
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44
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45 drawnow ();
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46 zmin = get (ax, "zlim")(1);
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47
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48 # don't pass axis handle and/or string arguments to __contour__()
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49 stop_idx = nargin;
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50 for i = 2 : nargin
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51 if (ischar (varargin{i}))
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52 stop_idx = i - 1;
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53 break;
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54 endif
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55 endfor
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56
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57 start_idx = 1;
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58 if (ishandle (varargin{1}))
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59 start_idx = 2;
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60 endif
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61
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62 if (stop_idx - start_idx == 1 || stop_idx - start_idx == 3)
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63 #don't pass a color matrix c to __contour__
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64 stop_idx -= 1;
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65 endif
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66
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67 [c, tmp2] = __contour__ (ax, zmin, varargin{start_idx:stop_idx});
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68
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69 tmp = [tmp; tmp2];
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70
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71 if (nargout > 0)
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72 h = tmp;
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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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77
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78 %!demo
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79 %! clf;
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80 %! colormap ('default');
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81 %! [~,~,Z] = peaks ();
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82 %! surfc (Z);
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83
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84 %!demo
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85 %! clf;
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86 %! colormap ('default');
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87 %! [~,~,Z] = sombrero ();
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88 %! [Fx,Fy] = gradient (Z);
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89 %! surfc (Z, Fx+Fy);
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90 %! shading interp;
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91
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92 %!demo
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93 %! clf;
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94 %! colormap ('default');
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95 %! [X,Y,Z] = sombrero ();
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96 %! [~,Fy] = gradient (Z);
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97 %! surfc (X,Y,Z,Fy);
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98 %! shading interp;
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99