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fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961). * scripts/plot/fplot.m: Add ability to specify n,tol,fmt in any order and simultaneously. Return data rather than plotting it if asked. Use additional test on progress of algorithm to decide whether to quit. Add %!demo and %!tests.
author Rik <rik@octave.org>
date Thu, 11 Jul 2013 09:25:54 -0700
parents 64e7bb01fce2
children 84e000930ca5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
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1 ## Copyright (C) 2007-2012 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} {} pie (@var{x})
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21 ## @deftypefnx {Function File} {} pie (@var{x}, @var{explode})
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22 ## @deftypefnx {Function File} {} pie (@dots{}, @var{labels})
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23 ## @deftypefnx {Function File} {} pie (@var{h}, @dots{});
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24 ## @deftypefnx {Function File} {@var{h} =} pie (@dots{});
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25 ## Plot a 2-D pie chart.
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26 ##
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27 ## When called with a single vector argument, produce a pie chart of the
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28 ## elements in @var{x}. The size of the ith slice is the percentage that the
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29 ## element @var{x}i represents of the total sum of @var{x}.
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30 ##
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31 ## The variable @var{explode} is a vector of the same length as @var{x} that,
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32 ## if non-zero, "explodes" the slice from the pie chart.
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33 ##
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34 ## The optional input @var{labels} is a cell array of strings of the same
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35 ## length as @var{x} specifying the label for each slice.
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36 ##
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37 ## The optional return value @var{h} is a list of handles to the patch
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38 ## and text objects generating the plot.
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39 ##
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40 ## @seealso{pie3, bar, stem}
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41 ## @end deftypefn
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42
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43 ## Very roughly based on pie.m from octave-forge whose author was
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44 ## Daniel Heiserer <Daniel.heiserer@physik.tu-muenchen.de>
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45
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46 function retval = pie (varargin)
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47
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48 [h, varargin] = __plt_get_axis_arg__ ("pie", varargin{:});
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49
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50 if (nargin < 1)
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51 print_usage ();
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52 else
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53 oldh = gca ();
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54 unwind_protect
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55 axes (h);
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56 newplot ();
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57 tmp = __pie__ ("pie", h, varargin{:});
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58 unwind_protect_cleanup
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59 axes (oldh);
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60 end_unwind_protect
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61 endif
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62
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63 if (nargout > 0)
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64 retval = tmp;
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65 endif
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66
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67 endfunction
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68
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69
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70 %!demo
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71 %! clf;
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72 %! pie ([3, 2, 1], [0, 0, 1]);
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73 %! colormap ([1,0,0;0,1,0;0,0,1;1,1,0;1,0,1;0,1,1]);
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74
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75 %!demo
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76 %! clf;
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77 %! pie ([3, 2, 1], [0, 0, 1], {'Cheddar', 'Swiss', 'Camembert'});
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78 %! colormap ([1,0,0;0,1,0;0,0,1;1,1,0;1,0,1;0,1,1]);
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79 %! axis ([-2,2,-2,2]);
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80
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81 %!demo
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82 %! clf;
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83 %! pie ([0.17, 0.34, 0.41], {'Cheddar', 'Swiss', 'Camembert'});
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84 %! colormap ([1,0,0;0,1,0;0,0,1;1,1,0;1,0,1;0,1,1]);
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85 %! axis ([-2,2,-2,2]);
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86 %! title ('missing slice');
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87