Mercurial > hg > octave-lyh
annotate scripts/plot/mesh.m @ 17309:68bcac3c043a
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* scripts/plot/area.m, scripts/plot/axis.m, scripts/plot/caxis.m,
scripts/plot/comet.m, scripts/plot/comet3.m, scripts/plot/compass.m,
scripts/plot/contour.m, scripts/plot/contour3.m, scripts/plot/contourf.m,
scripts/plot/cylinder.m, scripts/plot/ellipsoid.m, scripts/plot/errorbar.m,
scripts/plot/feather.m, scripts/plot/fill.m, scripts/plot/loglog.m,
scripts/plot/loglogerr.m, scripts/plot/mesh.m, scripts/plot/meshc.m,
scripts/plot/meshz.m, scripts/plot/pcolor.m, scripts/plot/pie.m,
scripts/plot/pie3.m, scripts/plot/plot.m, scripts/plot/plot3.m,
scripts/plot/polar.m, scripts/plot/private/__bar__.m,
scripts/plot/private/__ezplot__.m, scripts/plot/private/__stem__.m,
scripts/plot/quiver.m, scripts/plot/quiver3.m, scripts/plot/rectangle.m,
scripts/plot/ribbon.m, scripts/plot/rose.m, scripts/plot/scatter.m,
scripts/plot/scatter3.m, scripts/plot/semilogx.m, scripts/plot/semilogxerr.m,
scripts/plot/semilogy.m, scripts/plot/semilogyerr.m, scripts/plot/slice.m,
scripts/plot/sphere.m, scripts/plot/stairs.m, scripts/plot/surf.m,
scripts/plot/surfc.m, scripts/plot/surfl.m, scripts/plot/surfnorm.m,
scripts/time/datetick.m: check for (! isempty (hax)) before saving
current figure.
author | Rik <rik@octave.org> |
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date | Tue, 20 Aug 2013 22:23:43 -0700 |
parents | bc924baa2c4e |
children | 43e0b711d7e0 |
rev | line source |
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1 ## Copyright (C) 1993-2012 John W. Eaton |
2313 | 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 | |
7016 | 7 ## the Free Software Foundation; either version 3 of the License, or (at |
8 ## your option) any later version. | |
2313 | 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 | |
7016 | 16 ## along with Octave; see the file COPYING. If not, see |
17 ## <http://www.gnu.org/licenses/>. | |
245 | 18 |
3368 | 19 ## -*- texinfo -*- |
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20 ## @deftypefn {Function File} {} mesh (@var{x}, @var{y}, @var{z}) |
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21 ## @deftypefnx {Function File} {} mesh (@var{z}) |
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22 ## @deftypefnx {Function File} {} mesh (@dots{}, @var{c}) |
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23 ## @deftypefnx {Function File} {} mesh (@dots{}, @var{prop}, @var{val}, @dots{}) |
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24 ## @deftypefnx {Function File} {} mesh (@var{hax}, @dots{}) |
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25 ## @deftypefnx {Function File} {@var{h} =} mesh (@dots{}) |
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26 ## Plot a 3-D wireframe mesh. |
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27 ## |
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28 ## The wireframe mesh is plotted using rectangles. The vertices of the |
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29 ## rectangles [@var{x}, @var{y}] are typically the output of @code{meshgrid}. |
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30 ## over a 2-D rectangular region in the x-y plane. @var{z} determines the |
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31 ## height above the plane of each vertex. If only a single @var{z} matrix is |
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32 ## given, then it is plotted over the meshgrid |
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33 ## @code{@var{x} = 1:columns (@var{z}), @var{y} = 1:rows (@var{z})}. |
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34 ## Thus, columns of @var{z} correspond to different @var{x} values and rows |
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35 ## of @var{z} correspond to different @var{y} values. |
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36 ## |
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37 ## The color of the mesh is computed by linearly scaling the @var{Z} values |
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38 ## to fit the range of the current colormap. Use @code{caxis} and/or |
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39 ## change the colormap to control the appearance. |
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40 ## |
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41 ## Optionally, the color of the mesh can be specified independently of @var{z} |
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42 ## by supplying a color matrix, @var{c}. |
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43 ## |
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44 ## Any property/value pairs are passed directly to the underlying surface |
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45 ## object. |
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46 ## |
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47 ## If the first argument @var{hax} is an axes handle, then plot into this axis, |
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48 ## rather than the current axes returned by @code{gca}. |
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49 ## |
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50 ## The optional return value @var{h} is a graphics handle to the created |
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51 ## surface object. |
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52 ## |
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53 ## @seealso{ezmesh, meshc, meshz, trimesh, contour, surf, surface, meshgrid, hidden, shading, colormap, caxis} |
3368 | 54 ## @end deftypefn |
4 | 55 |
2314 | 56 ## Author: jwe |
57 | |
7109 | 58 function h = mesh (varargin) |
6172 | 59 |
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60 if (! all (cellfun ("isreal", varargin))) |
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61 error ("mesh: X, Y, Z, C arguments must be real"); |
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62 endif |
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63 |
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64 [hax, varargin, nargin] = __plt_get_axis_arg__ ("mesh", varargin{:}); |
6390 | 65 |
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66 oldfig = []; |
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67 if (! isempty (hax)) |
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68 oldfig = get (0, "currentfigure"); |
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69 endif |
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70 unwind_protect |
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71 hax = newplot (hax); |
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72 |
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73 htmp = surface (varargin{:}); |
7110 | 74 |
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75 set (htmp, "facecolor", "w"); |
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76 set (htmp, "edgecolor", "flat"); |
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77 if (! ishold ()) |
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78 set (hax, "view", [-37.5, 30], |
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79 "xgrid", "on", "ygrid", "on", "zgrid", "on"); |
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80 endif |
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81 unwind_protect_cleanup |
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82 if (! isempty (oldfig)) |
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83 set (0, "currentfigure", oldfig); |
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84 endif |
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85 end_unwind_protect |
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6257 | 87 if (nargout > 0) |
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88 h = htmp; |
6154 | 89 endif |
90 | |
4 | 91 endfunction |
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92 |
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93 |
14411 | 94 %!demo |
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95 %! clf; |
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96 %! x = logspace (0,1,11); |
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98 %! mesh (x, x, z); |
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99 %! xlabel 'X-axis'; |
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100 %! ylabel 'Y-axis'; |
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101 %! zlabel 'Z-axis'; |
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102 %! title ('mesh() with color proportional to height'); |
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103 |
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104 %!demo |
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105 %! clf; |
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106 %! x = logspace (0,1,11); |
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107 %! z = x'*x; |
14411 | 108 %! mesh (x, x, z, z.^2); |
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109 %! xlabel 'X-axis'; |
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110 %! ylabel 'Y-axis'; |
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111 %! zlabel 'linear scale'; |
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112 %! title ('mesh() with color proportional to Z^2'); |
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113 |
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115 %! clf; |
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116 %! x = logspace (0,1,11); |
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118 %! mesh (x, x, z, z.^2); | |
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119 %! set (gca, 'zscale', 'log'); |
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120 %! xlabel 'X-axis'; |
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121 %! ylabel 'Y-axis'; |
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123 %! title ({'mesh() with color proportional to Z^2', 'Z-axis is log scale'}); |
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124 %! if (strcmp (get (gcf, '__graphics_toolkit__'), 'gnuplot')) |
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125 %! title ({'Gnuplot: mesh color is wrong', 'This is a Gnuplot bug'}); |
14411 | 126 %! endif |
127 |