Mercurial > octave-nkf
annotate scripts/plot/pie.m @ 8920:eb63fbe60fab
update copyright notices
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Sat, 07 Mar 2009 10:41:27 -0500 |
| parents | ff89a265592b |
| children | 95c3e38098bf |
| rev | line source |
|---|---|
| 8920 | 1 ## Copyright (C) 2007, 2008, 2009 David Bateman |
| 7118 | 2 ## |
| 3 ## This file is part of Octave. | |
| 4 ## | |
| 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. | |
| 9 ## | |
| 10 ## Octave is distributed in the hope that it will be useful, but | |
| 11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 ## General Public License for more details. | |
| 14 ## | |
| 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/>. | |
| 18 | |
| 19 ## -*- texinfo -*- | |
| 20 ## @deftypefn {Function File} {} pie (@var{y}) | |
| 21 ## @deftypefnx {Function File} {} pie (@var{y}, @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 pie chart. | |
| 26 ## | |
|
8325
b93ac0586e4b
spelling corrections
Brian Gough<bjg@network-theory.co.uk>
parents:
7313
diff
changeset
|
27 ## Called with a single vector argument, produces a pie chart of the |
| 7118 | 28 ## elements in @var{x}, with the size of the slice determined by percentage |
| 29 ## size of the values of @var{x}. | |
| 30 ## | |
| 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. | |
| 33 ## | |
| 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. | |
| 36 ## | |
| 37 ## The optional return value @var{h} provides a handle to the patch object. | |
| 38 ## | |
| 39 ## @seealso{bar, stem} | |
| 40 ## @end deftypefn | |
| 41 | |
| 42 ## Very roughly based on pie.m from octave-forge whose author was | |
| 43 ## Daniel Heiserer <Daniel.heiserer@physik.tu-muenchen.de> | |
| 44 | |
| 45 function retval = pie (varargin) | |
| 46 | |
| 7215 | 47 [h, varargin] = __plt_get_axis_arg__ ("pie", varargin{:}); |
| 48 | |
| 7118 | 49 if (nargin < 1) |
| 50 print_usage (); | |
| 7215 | 51 else |
| 7118 | 52 oldh = gca (); |
| 53 unwind_protect | |
| 54 axes (h); | |
| 55 newplot (); | |
| 7215 | 56 tmp = __pie__ (h, varargin{:}); |
| 7118 | 57 unwind_protect_cleanup |
| 58 axes (oldh); | |
| 59 end_unwind_protect | |
| 60 endif | |
| 61 | |
| 62 if (nargout > 0) | |
| 63 retval = tmp; | |
| 64 endif | |
| 7119 | 65 |
| 7118 | 66 endfunction |
| 67 | |
| 68 function hlist = __pie__ (varargin) | |
| 7119 | 69 |
| 7118 | 70 h = varargin{1}; |
| 71 x = abs (varargin{2}); | |
| 72 iarg = 3; | |
| 73 | |
| 74 if (! isvector (x)) | |
| 75 error ("pie: expecting vector argument"); | |
| 76 endif | |
| 77 | |
| 78 len = length (x); | |
| 79 | |
| 7313 | 80 have_explode = false; |
| 81 have_labels = false; | |
| 82 | |
| 7118 | 83 while (iarg <= nargin) |
| 7119 | 84 arg = varargin{iarg++}; |
| 7118 | 85 if (iscell (arg)) |
| 86 labels = arg; | |
| 7313 | 87 have_labels = true; |
|
8867
ff89a265592b
pie.m: fix arg size comparison
John W. Eaton <jwe@octave.org>
parents:
8325
diff
changeset
|
88 if (numel (x) != numel (labels)) |
| 7118 | 89 error ("pie: mismatch in number of labels and data"); |
| 90 endif | |
| 91 elseif (isnumeric (arg)) | |
| 92 explode = arg; | |
| 7313 | 93 have_explode = true; |
| 7118 | 94 if (! size_equal (x, explode)) |
| 95 error ("pie: mismatch in number of elements in explode and data"); | |
| 96 endif | |
| 97 endif | |
| 98 endwhile | |
| 99 | |
| 7313 | 100 if (! have_explode) |
| 7118 | 101 explode = zeros (size (x)); |
| 102 endif | |
| 103 | |
| 7313 | 104 if (! have_labels) |
| 7118 | 105 xp = round (100 * x ./ sum (x)); |
| 7119 | 106 for i = 1:len |
| 7118 | 107 labels{i} = sprintf ("%d%%", xp(i)); |
| 108 endfor | |
| 109 endif | |
| 110 | |
| 111 hlist = []; | |
| 112 refinement = 90; | |
| 7119 | 113 phi = 0:refinement:360; |
| 114 xphi = cumsum (x / sum (x) * 360); | |
| 115 for i = 1:len | |
| 7118 | 116 if (i == 1) |
| 117 xn = 0 : 360 / refinement : xphi(i); | |
| 118 else | |
| 119 xn = xphi(i-1) : 360 / refinement : xphi(i); | |
| 120 endif | |
| 121 | |
| 7119 | 122 if (xn(end) != xphi(i)) |
| 7118 | 123 xn = [xn, xphi(i)]; |
| 124 endif | |
| 125 | |
| 126 xn2 = (xn(1) + xn(end)) / 2; | |
| 127 if (explode (i)) | |
| 128 xoff = - 0.1 * sind (xn2); | |
| 129 yoff = 0.1 * cosd (xn2); | |
| 130 else | |
| 131 xoff = 0; | |
| 132 yoff = 0; | |
| 133 endif | |
| 134 xt = - 1.2 * sind (xn2); | |
| 135 yt = 1.2 * cosd (xn2); | |
| 136 if (xt > 0) | |
| 137 align = "left"; | |
| 138 else | |
| 139 align = "right"; | |
| 140 endif | |
| 141 | |
| 142 hlist = [hlist; patch(xoff + [0, - sind(xn)], yoff + [0, cosd(xn)], i); | |
| 7208 | 143 text(xt, yt, labels{i}, "horizontalalignment", align)]; |
| 7118 | 144 endfor |
| 7119 | 145 |
| 7118 | 146 if (len == 1) |
| 147 set (h, "clim", [1, 2]); | |
| 148 else | |
| 149 set (h, "clim", [1, len]); | |
| 150 endif | |
| 7119 | 151 |
| 7120 | 152 axis ([-1.5, 1.5, -1.5, 1.5], "square"); |
| 7119 | 153 |
| 7118 | 154 endfunction |
| 7120 | 155 |
| 156 %!demo | |
| 157 %! pie ([3, 2, 1], [0, 0, 1]); | |
| 158 %! colormap([1,0,0;0,1,0;0,0,1;1,1,0;1,0,1;0,1,1]); | |
| 159 | |
| 160 %!demo | |
| 161 %! pie ([3, 2, 1], [0, 0, 1], {"Cheddar", "Swiss", "Camembert"}); | |
| 162 %! colormap([1,0,0;0,1,0;0,0,1;1,1,0;1,0,1;0,1,1]); | |
| 163 %! axis ([-2,2,-2,2]); |