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[project @ 2006-06-01 20:23:53 by jwe]
author jwe
date Thu, 01 Jun 2006 20:23:54 +0000
parents 55404f3b0da1
children 01556febbaaf
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1 ## Copyright (C) 1996 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 2, or (at your option)
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8 ## 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, write to the Free
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17 ## Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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18 ## 02110-1301, USA.
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19
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20 ## -*- texinfo -*-
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21 ## @deftypefn {Function File} {} __plt3__ (@var{x}, @var{y}, @var{z}, @var{fmt})
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22 ## @end deftypefn
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23
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24 ## Author: Paul Kienzle <kienzle.powernet.co.uk>
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25 ## 2001-04-06 Paul Kienzle <kienzle.powernet.co.uk>
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26 ## * __gnuplot_set__ nohidden3d; vector X,Y, matrix Z => meshgrid(X,Y)
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27
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28 ## Modified to use new gnuplot interface in octave > 2.9.0
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29 ## Dmitri A. Sergatskov <dasergatskov@gmail.com>
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30 ## April 18, 2005
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31 ## Modified to use NaN as seperator for gnuplot, so multiple calls
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32 ## aren't needed.
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33 ## David Bateman <dbateman@free.fr>
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34 ## May 25, 2006
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35
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36 function __plt3__ (x, y, z, fmt)
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37
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38 if (isvector (x) && isvector (y))
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39 if (isvector (z))
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40 x = x(:);
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41 y = y(:);
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42 z = z(:);
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43 elseif (length (x) == rows (z) && length (y) == columns (z))
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44 error ("plot3: [length(x), length(y)] must match size(z)");
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45 else
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46 [x, y] = meshgrid (x, y);
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47 endif
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48 endif
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49
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50 if (any (size (x) != size (y)) || any (size (x) != size (z)))
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51 error ("plot3: x, y, and z must have the same shape");
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52 endif
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53
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54 unwind_protect
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55 __gnuplot_set__ parametric;
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56 __gnuplot_raw__ ("set nohidden3d;\n");
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57
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58 tmp = [([x; NaN*ones(1,size(x,2))])(:), ...
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59 ([y; NaN*ones(1,size(y,2))])(:), ...
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60 ([z; NaN*ones(1,size(z,2))])(:)];
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61
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62 eval (sprintf ("__gnuplot_splot__ tmp %s\n", fmt));
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63 unwind_protect_cleanup
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64 __gnuplot_set__ noparametric;
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65 end_unwind_protect
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66 endfunction