1 ## Copyright (C) 2007-2012 David Bateman
3 ## This file is part of Octave.
5 ## Octave is free software; you can redistribute it and/or modify it
6 ## under the terms of the GNU General Public License as published by
7 ## the Free Software Foundation; either version 3 of the License, or (at
8 ## your option) any later version.
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13 ## General Public License for more details.
15 ## You should have received a copy of the GNU General Public License
16 ## along with Octave; see the file COPYING. If not, see
17 ## <http://www.gnu.org/licenses/>.
20 ## @deftypefn {Function File} {} pie (@var{x})
21 ## @deftypefnx {Function File} {} pie (@var{x}, @var{explode})
22 ## @deftypefnx {Function File} {} pie (@dots{}, @var{labels})
23 ## @deftypefnx {Function File} {} pie (@var{h}, @dots{});
24 ## @deftypefnx {Function File} {@var{h} =} pie (@dots{});
25 ## Produce a 2-D pie chart.
27 ## Called with a single vector argument, produces a pie chart of the
28 ## elements in @var{x}, with the size of the slice determined by percentage
29 ## size of the values of @var{x}.
31 ## The variable @var{explode} is a vector of the same length as @var{x} that
32 ## if non zero 'explodes' the slice from the pie chart.
34 ## If given @var{labels} is a cell array of strings of the same length as
35 ## @var{x}, giving the labels of each of the slices of the pie chart.
37 ## The optional return value @var{h} is a list of handles to the patch
38 ## and text objects generating the plot.
40 ## @seealso{pie3, bar, stem}
43 ## Very roughly based on pie.m from octave-forge whose author was
44 ## Daniel Heiserer <Daniel.heiserer@physik.tu-muenchen.de>
46 function retval = pie (varargin)
48 [h, varargin] = __plt_get_axis_arg__ ("pie", varargin{:});
57 tmp = __pie__ ("pie", h, varargin{:});
58 unwind_protect_cleanup
72 %! pie ([3, 2, 1], [0, 0, 1]);
73 %! colormap ([1,0,0;0,1,0;0,0,1;1,1,0;1,0,1;0,1,1]);
77 %! pie ([3, 2, 1], [0, 0, 1], {"Cheddar", "Swiss", "Camembert"});
78 %! colormap ([1,0,0;0,1,0;0,0,1;1,1,0;1,0,1;0,1,1]);
79 %! axis ([-2,2,-2,2]);
83 %! pie ([0.17, 0.34, 0.41], {"Cheddar", "Swiss", "Camembert"});
84 %! colormap ([1,0,0;0,1,0;0,0,1;1,1,0;1,0,1;0,1,1]);
85 %! axis ([-2,2,-2,2]);
86 %! title ("missing slice");