|
7207
|
1 ## Copyright (C) 2007 David Bateman |
|
|
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} {} meshz (@var{x}, @var{y}, @var{z}) |
|
|
21 ## Plot a curtain mesh given matrices @var{x}, and @var{y} from |
|
|
22 ## @code{meshgrid} and a matrix @var{z} corresponding to the @var{x} and |
|
|
23 ## @var{y} coordinates of the mesh. If @var{x} and @var{y} are vectors, |
|
|
24 ## then a typical vertex is (@var{x}(j), @var{y}(i), @var{z}(i,j)). Thus, |
|
|
25 ## columns of @var{z} correspond to different @var{x} values and rows of |
|
|
26 ## @var{z} correspond to different @var{y} values. |
|
|
27 ## @seealso{meshgrid, mesh, contour} |
|
|
28 ## @end deftypefn |
|
|
29 |
|
|
30 function retval = meshz (varargin) |
|
|
31 |
|
7215
|
32 [h, varargin, nargin] = __plt_get_axis_arg__ ("meshz", varargin{:}); |
|
7207
|
33 |
|
|
34 ioff = nargin + 1; |
|
|
35 for i = 1 : nargin |
|
7208
|
36 if (ischar (varargin{i})) |
|
7207
|
37 ioff = i; |
|
|
38 break; |
|
|
39 endif |
|
|
40 endfor |
|
|
41 |
|
|
42 ## Bundle C matrix back into varargin |
|
|
43 if (ioff == 3 || ioff == 5) |
|
|
44 ioff --; |
|
|
45 endif |
|
|
46 |
|
|
47 if (ioff == 2) |
|
7208
|
48 z = varargin{1}; |
|
7207
|
49 [m, n] = size (z); |
|
|
50 x = 1 : n; |
|
|
51 y = (1 : m).'; |
|
|
52 else |
|
7208
|
53 x = varargin{1}; |
|
|
54 y = varargin{2}; |
|
|
55 z = varargin{3}; |
|
7207
|
56 endif |
|
|
57 |
|
|
58 |
|
|
59 if (isvector (x) && isvector (y)) |
|
|
60 x = [x(1), x(:).', x(end)]; |
|
|
61 y = [y(1); y(:); y(end)]; |
|
|
62 else |
|
|
63 x = [x(1, 1), x(1, :), x(1, end); |
|
|
64 x(:, 1), x, x(:, end); |
|
|
65 x(end, 1), x(end, :), x(end, end)]; |
|
|
66 y = [y(1, 1), y(1, :), y(1, end); |
|
|
67 y(:, 1), y, y(:, end); |
|
|
68 y(end, 1), y(end, :), y(end, end)]; |
|
|
69 endif |
|
|
70 |
|
|
71 zref = min(z(isfinite(z))); |
|
|
72 z = [zref .* ones(1, size(z, 2) + 2); |
|
|
73 zref .* ones(size(z, 1), 1), z, zref .* ones(size(z, 1), 1); |
|
|
74 zref.* ones(1, size(z, 2) + 2)]; |
|
|
75 |
|
7215
|
76 oldh = gca (); |
|
|
77 unwind_protect |
|
|
78 axes (h); |
|
|
79 tmp = mesh (x, y, z, varargin{ioff:end}); |
|
|
80 unwind_protect_cleanup |
|
|
81 axes (oldh); |
|
|
82 end_unwind_protect |
|
|
83 |
|
|
84 if (nargout > 0) |
|
|
85 retval = tmp; |
|
|
86 endif |
|
7207
|
87 |
|
|
88 endfunction |
