Mercurial > octave
annotate scripts/plot/draw/pie.m @ 33670:9dd2a8e7e0d5 default tip @
uifigure.m: Make sure variable exists before it is used (bug #65459).
* scripts/gui/uifigure.m: The variable "props" might have been used before it
existed. Make sure it exists for all code paths.
author | Markus Mützel <markus.muetzel@gmx.de> |
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date | Mon, 24 Jun 2024 10:29:15 +0200 |
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1 ######################################################################## |
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2 ## |
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3 ## Copyright (C) 2007-2024 The Octave Project Developers |
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4 ## |
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5 ## See the file COPYRIGHT.md in the top-level directory of this |
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6 ## distribution or <https://octave.org/copyright/>. |
7118 | 7 ## |
8 ## This file is part of Octave. | |
9 ## | |
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10 ## Octave is free software: you can redistribute it and/or modify it |
7118 | 11 ## under the terms of the GNU General Public License as published by |
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12 ## the Free Software Foundation, either version 3 of the License, or |
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13 ## (at your option) any later version. |
7118 | 14 ## |
15 ## Octave is distributed in the hope that it will be useful, but | |
16 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
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17 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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18 ## GNU General Public License for more details. |
7118 | 19 ## |
20 ## You should have received a copy of the GNU General Public License | |
21 ## along with Octave; see the file COPYING. If not, see | |
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22 ## <https://www.gnu.org/licenses/>. |
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23 ## |
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24 ######################################################################## |
7118 | 25 |
26 ## -*- texinfo -*- | |
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27 ## @deftypefn {} {} pie (@var{x}) |
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28 ## @deftypefnx {} {} pie (@dots{}, @var{explode}) |
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29 ## @deftypefnx {} {} pie (@dots{}, @var{labels}) |
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30 ## @deftypefnx {} {} pie (@var{hax}, @dots{}) |
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31 ## @deftypefnx {} {@var{h} =} pie (@dots{}) |
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32 ## Plot a 2-D pie chart. |
7118 | 33 ## |
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34 ## When called with a single vector argument, produce a pie chart of the |
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35 ## elements in @var{x}. The size of the ith slice is the percentage that the |
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36 ## element @var{x}i represents of the total sum of @var{x}: |
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37 ## @code{pct = @var{x}(i) / sum (@var{x})}. |
7118 | 38 ## |
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39 ## The optional input @var{explode} is a vector of the same length as @var{x} |
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40 ## that, if nonzero, "explodes" the slice from the pie chart. |
7118 | 41 ## |
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42 ## The optional input @var{labels} is a cell array of strings of the same |
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43 ## length as @var{x} specifying the label for each slice. |
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44 ## |
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45 ## If the first argument @var{hax} is an axes handle, then plot into this axes, |
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46 ## rather than the current axes returned by @code{gca}. |
7118 | 47 ## |
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48 ## The optional return value @var{h} is a list of handles to the patch |
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49 ## and text objects generating the plot. |
7118 | 50 ## |
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51 ## Note: If @code{sum (@var{x}) @leq{} 1} then the elements of @var{x} are |
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52 ## interpreted as percentages directly and are not normalized by @code{sum |
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53 ## (x)}. Furthermore, if the sum is less than 1 then there will be a missing |
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54 ## slice in the pie plot to represent the missing, unspecified percentage. |
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55 ## |
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56 ## @seealso{pie3, bar, hist, rose} |
7118 | 57 ## @end deftypefn |
58 | |
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59 ## Very roughly based on pie.m from Octave Forge whose author was |
7118 | 60 ## Daniel Heiserer <Daniel.heiserer@physik.tu-muenchen.de> |
61 | |
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62 function h = pie (varargin) |
7118 | 63 |
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64 [hax, varargin, nargin] = __plt_get_axis_arg__ ("pie", varargin{:}); |
7215 | 65 |
7118 | 66 if (nargin < 1) |
67 print_usage (); | |
68 endif | |
69 | |
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70 if (! all (isfinite (varargin{1}))) |
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71 error ("pie: all data in X must be finite"); |
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72 endif |
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73 |
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74 oldfig = []; |
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75 if (! isempty (hax)) |
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76 oldfig = get (0, "currentfigure"); |
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77 endif |
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78 unwind_protect |
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79 hax = newplot (hax); |
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80 htmp = __pie__ ("pie", hax, varargin{:}); |
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81 unwind_protect_cleanup |
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82 if (! isempty (oldfig)) |
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83 set (0, "currentfigure", oldfig); |
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84 endif |
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85 end_unwind_protect |
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86 |
7118 | 87 if (nargout > 0) |
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88 h = htmp; |
7118 | 89 endif |
7119 | 90 |
7118 | 91 endfunction |
92 | |
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93 |
7120 | 94 %!demo |
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95 %! clf; |
7120 | 96 %! pie ([3, 2, 1], [0, 0, 1]); |
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97 %! colormap ([1,0,0;0,1,0;0,0,1;1,1,0;1,0,1;0,1,1]); |
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98 %! title ("pie() with exploded wedge"); |
7120 | 99 |
100 %!demo | |
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101 %! clf; |
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102 %! pie ([3, 2, 1], [0, 0, 1], {"Cheddar", "Swiss", "Camembert"}); |
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103 %! colormap ([1,0,0;0,1,0;0,0,1;1,1,0;1,0,1;0,1,1]); |
7120 | 104 %! axis ([-2,2,-2,2]); |
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105 %! title ("pie() with labels"); |
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106 |
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107 |
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108 %!demo |
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109 %! clf; |
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110 %! pie ([0.17, 0.34, 0.41], {"Cheddar", "Swiss", "Camembert"}); |
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111 %! colormap ([1,0,0;0,1,0;0,0,1;1,1,0;1,0,1;0,1,1]); |
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112 %! axis ([-2,2,-2,2]); |
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113 %! title ("pie() with missing slice"); |
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114 |
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115 ## Test input validation |
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116 %!error <Invalid call> pie () |
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117 %!error <all data in X must be finite> pie ([1 2 Inf]) |
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118 %!error <all data in X must be finite> pie ([1 2 NaN]) |