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1 ## Copyright (C) 2007 David Bateman |
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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} {} scatter (@var{x}, @var{y}, @var{s}, @var{c}) |
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21 ## @deftypefnx {Function File} {} scatter (@dots{}, 'filled') |
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22 ## @deftypefnx {Function File} {} scatter (@dots{}, @var{style}) |
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23 ## @deftypefnx {Function File} {} scatter (@dots{}, @var{prop}, @var{val}) |
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24 ## @deftypefnx {Function File} {} scatter (@var{h}, @dots{}) |
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25 ## @deftypefnx {Function File} {@var{h} =} scatter (@dots{}) |
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26 ## |
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27 ## Plot a scatter plot of the data. A marker is ploted at each point |
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28 ## defined by the points in the vectors @var{x} and @var{y}. The size of |
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29 ## the markers used is determined by the @var{s}, which can be a scalar, |
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30 ## a vector of the same length of @var{x} and @var{y}. If @var{s} is not |
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31 ## given or is an empty matrix, then the default value of 8 points is used. |
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32 ## |
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33 ## The color of the markers is determined by @var{c}, which can be a string |
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34 ## defining a fixed color, a 3 element vector giving the red, green and blue |
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35 ## components of the color, a vector of the same length as @var{x} that gives |
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36 ## a scaled index into the current colormap, or a @var{n}-by-3 matrix defining |
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37 ## the colors of each of the markers individually. |
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38 ## |
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39 ## The marker to use can be changed with the @var{style} argument, that is a |
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40 ## string defining a marker in the same manner as the @code{plot} command. |
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41 ## If the argument 'filled' is given then the markers as filled. All |
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42 ## additional arguments are passed to the underlying patch command. |
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43 ## |
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44 ## The optional return value @var{h} provides a handle to the patch object |
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45 ## |
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46 ## @example |
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47 ## @group |
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48 ## x = randn (100, 1); |
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49 ## y = randn (100, 1); |
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50 ## scatter (x, y, [], sqrt(x.^2 + y.^2)); |
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51 ## @end group |
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52 ## @end example |
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53 ## |
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54 ## @seealso{plot, patch, scatter3} |
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55 ## @end deftypefn |
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56 |
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57 function retval = scatter (varargin) |
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58 |
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59 [h, varargin, nargin] = __plt_get_axis_arg__ ("scatter", varargin{:}); |
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60 |
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61 if (nargin < 2) |
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62 print_usage (); |
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63 else |
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64 oldh = gca (); |
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65 unwind_protect |
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66 axes (h); |
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67 newplot (); |
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68 tmp = __scatter__ (h, 2, "scatter", varargin{:}); |
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69 unwind_protect_cleanup |
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70 axes (oldh); |
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71 end_unwind_protect |
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72 endif |
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73 |
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74 if (nargout > 0) |
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75 retval = tmp; |
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76 endif |
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77 |
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78 endfunction |
