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2 ## Copyright (C) 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2002, 2004, |
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3 ## 2005, 2006, 2007 John W. Eaton |
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4 ## |
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5 ## This file is part of Octave. |
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6 ## |
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7 ## Octave is free software; you can redistribute it and/or modify it |
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8 ## under the terms of the GNU General Public License as published by |
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9 ## the Free Software Foundation; either version 3 of the License, or (at |
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10 ## your option) any later version. |
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11 ## |
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12 ## Octave is distributed in the hope that it will be useful, but |
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13 ## WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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15 ## General Public License for more details. |
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16 ## |
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17 ## You should have received a copy of the GNU General Public License |
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18 ## along with Octave; see the file COPYING. If not, see |
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19 ## <http://www.gnu.org/licenses/>. |
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20 |
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21 ## -*- texinfo -*- |
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22 ## @deftypefn {Function File} {} pcolor (@var{x}, @var{y}, @var{c}) |
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23 ## @deftypefnx {Function File} {} pcolor (@var{c}) |
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24 ## Density plot for given matrices @var{x}, and @var{y} from @code{meshgrid} and |
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25 ## a matrix @var{c} corresponding to the @var{x} and @var{y} coordinates of |
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26 ## the mesh. If @var{x} and @var{y} are vectors, then a typical vertex |
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27 ## is (@var{x}(j), @var{y}(i), @var{c}(i,j)). Thus, columns of @var{c} |
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28 ## correspond to different @var{x} values and rows of @var{c} correspond |
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29 ## to different @var{y} values. |
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30 ## @seealso{meshgrid, contour} |
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31 ## @end deftypefn |
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32 |
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33 ## Author: jwe |
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34 |
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35 function h = pcolor (x,y,c) |
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36 |
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37 newplot (); |
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38 |
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39 if (nargin == 1) |
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40 C = x; |
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41 Z = zeros(size(C)); |
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42 [nr, nc] = size(C); |
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43 [X, Y] = meshgrid(1:nr, 1:nc); |
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44 elseif (nargin == 3) |
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45 Z = zeros(size(C)); |
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46 else |
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47 print_usage(); |
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48 end; |
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49 |
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50 |
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51 tmp = surface (X,Y,Z,C); |
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52 ax = get(tmp, "parent"); |
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53 set (tmp, "FaceColor", "flat"); |
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54 set (ax, "view", [0, 90]); |
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55 if (nargout > 0) |
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56 h = tmp; |
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57 endif |
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58 |
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59 endfunction |
