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1 ## Copyright (C) 2007 Kai Habel |
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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} {} surf (@var{x}, @var{y}, @var{z}) |
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21 ## Plot a surface given matrices @var{x}, and @var{y} from @code{meshgrid} and |
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22 ## a matrix @var{z} corresponding to the @var{x} and @var{y} coordinates of |
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23 ## the mesh. If @var{x} and @var{y} are vectors, then a typical vertex |
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24 ## is (@var{x}(j), @var{y}(i), @var{z}(i,j)). Thus, columns of @var{z} |
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25 ## correspond to different @var{x} values and rows of @var{z} correspond |
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26 ## to different @var{y} values. |
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27 ## @seealso{mesh, surface} |
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28 ## @end deftypefn |
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29 |
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30 ## Author: Kai Habel <kai.habel@gmx.de> |
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31 |
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32 function retval = surf (varargin) |
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33 |
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34 [h, varargin] = __plt_get_axis_arg__ ("surf", varargin{:}); |
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35 |
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36 oldh = gca (); |
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37 unwind_protect |
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38 axes (h); |
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39 newplot (); |
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40 tmp = surface (varargin{:}); |
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41 |
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42 if (! ishold ()) |
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43 set (h, "view", [-37.5, 30], |
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44 "xgrid", "on", "ygrid", "on", "zgrid", "on"); |
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45 endif |
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46 unwind_protect_cleanup |
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47 axes (oldh); |
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48 end_unwind_protect |
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49 |
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50 if (nargout > 0) |
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51 retval = tmp; |
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52 endif |
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53 |
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54 endfunction |
