Mercurial > octave
annotate scripts/plot/draw/private/__pie__.m @ 25198:5251de3c34d7
Center label if only one value is given for a pie chart.
* __pie__.m: Use HorizontalAlignment value of "center" if there is
only a single value for the entire pie chart.
| author | Rik <rik@octave.org> |
|---|---|
| date | Tue, 10 Apr 2018 15:46:07 -0700 |
| parents | 6652d3823428 |
| children | 00f796120a6d |
| rev | line source |
|---|---|
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1 ## Copyright (C) 2007-2018 David Bateman |
| 11330 | 2 ## Copyright (C) 2010 Kai Habel |
| 3 ## | |
| 4 ## This file is part of Octave. | |
| 5 ## | |
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6 ## Octave is free software: you can redistribute it and/or modify it |
| 11330 | 7 ## under the terms of the GNU General Public License as published by |
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8 ## the Free Software Foundation, either version 3 of the License, or |
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9 ## (at your option) any later version. |
| 11330 | 10 ## |
| 11 ## Octave is distributed in the hope that it will be useful, but | |
| 12 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
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13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 ## GNU General Public License for more details. |
| 11330 | 15 ## |
| 16 ## You should have received a copy of the GNU General Public License | |
| 17 ## along with Octave; see the file COPYING. If not, see | |
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18 ## <https://www.gnu.org/licenses/>. |
| 11330 | 19 |
| 20 ## -*- texinfo -*- | |
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21 ## @deftypefn {} {@var{hlist} =} __pie__ (caller, @dots{}) |
| 11330 | 22 ## Undocumented internal function. |
| 23 ## @end deftypefn | |
| 24 | |
| 25 function hlist = __pie__ (caller, varargin) | |
| 26 | |
| 27 h = varargin{1}; | |
| 28 x = abs (varargin{2}); | |
| 29 iarg = 3; | |
| 30 | |
| 31 if (! isvector (x)) | |
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32 error ("%s: X must be a vector", caller); |
| 11330 | 33 endif |
| 34 | |
| 35 len = length (x); | |
| 36 | |
| 37 have_explode = false; | |
| 38 have_labels = false; | |
| 39 | |
| 40 while (iarg <= nargin - 1) | |
| 41 arg = varargin{iarg++}; | |
| 42 if (iscell (arg)) | |
| 43 labels = arg; | |
| 44 have_labels = true; | |
| 45 if (numel (x) != numel (labels)) | |
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46 error ("%s: mismatch in number of labels and data", caller); |
| 11330 | 47 endif |
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48 elseif (isnumeric (arg) || islogical (arg)) |
| 11330 | 49 explode = arg; |
| 50 have_explode = true; | |
| 51 if (! size_equal (x, explode)) | |
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52 error ("%s: mismatch in number of elements in explode and data", |
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53 caller); |
| 11330 | 54 endif |
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55 else |
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56 error ("%s: %s is invalid as an optional argument", caller, class (arg)); |
| 11330 | 57 endif |
| 58 endwhile | |
| 59 | |
| 60 if (! have_explode) | |
| 61 explode = zeros (size (x)); | |
| 62 endif | |
| 63 | |
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64 normalize = true; |
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65 if (sum (x(:)) < 1) |
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66 normalize = false; |
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67 endif |
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68 |
| 11330 | 69 if (! have_labels) |
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70 if (normalize) |
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71 xp = round (100 * x ./ sum (x)); |
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72 else |
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73 xp = round (100 * x); |
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74 endif |
| 11330 | 75 for i = 1:len |
| 76 labels{i} = sprintf ("%d%%", xp(i)); | |
| 77 endfor | |
| 78 endif | |
| 79 | |
| 80 hlist = []; | |
| 81 refinement = 90; | |
| 82 phi = 0:refinement:360; | |
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83 if (normalize) |
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84 xphi = cumsum (x / sum (x) * 360); |
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85 else |
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86 xphi = cumsum (x * 360); |
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87 endif |
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88 |
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89 for i = 1:len |
| 11330 | 90 if (i == 1) |
| 91 xn = 0 : 360 / refinement : xphi(i); | |
| 92 else | |
| 93 xn = xphi(i-1) : 360 / refinement : xphi(i); | |
| 94 endif | |
| 95 | |
| 96 if (xn(end) != xphi(i)) | |
| 97 xn = [xn, xphi(i)]; | |
| 98 endif | |
| 99 | |
| 100 xn2 = (xn(1) + xn(end)) / 2; | |
| 101 if (explode (i)) | |
| 102 xoff = - 0.1 * sind (xn2); | |
| 103 yoff = 0.1 * cosd (xn2); | |
| 104 else | |
| 105 xoff = 0; | |
| 106 yoff = 0; | |
| 107 endif | |
| 108 xt = - 1.2 * sind (xn2); | |
| 109 yt = 1.2 * cosd (xn2); | |
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110 |
| 11330 | 111 if (len == 1) |
| 112 set (h, "clim", [1, 2]); | |
| 113 else | |
| 114 set (h, "clim", [1, len]); | |
| 115 endif | |
| 116 | |
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117 if (strcmp (caller, "pie3")) |
| 11330 | 118 ln = length (xn); |
| 119 zlvl = 0.35; | |
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120 sx = repmat (xoff + [0, -sind(xn), 0], [2, 1]); |
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121 sy = repmat (yoff + [0, cosd(xn), 0], [2, 1]); |
| 11330 | 122 sz = [zeros(1, ln + 2); zlvl * ones(1, ln + 2)]; |
| 123 sc = i * ones (size (sz)); | |
| 124 | |
| 125 hlist = [hlist; | |
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126 patch(xoff + [0, -sind(xn)], yoff + [0, cosd(xn)], zeros (1, ln + 1), i); |
| 11330 | 127 surface(sx, sy, sz, sc); |
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128 patch(xoff + [0, -sind(xn)], yoff + [0, cosd(xn)], zlvl * ones (1, ln + 1), i); |
| 11330 | 129 text(xt, yt, zlvl, labels{i})]; |
| 130 | |
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131 elseif (strcmp (caller, "pie")) |
| 11330 | 132 if (xt > 0) |
| 133 align = "left"; | |
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134 elseif (xt < 0) |
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135 align = "right"; |
| 11330 | 136 else |
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137 align = "center"; |
| 11330 | 138 endif |
| 139 | |
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140 hlist = [hlist; patch(xoff + [0, -sind(xn)], yoff + [0, cosd(xn)], i); |
| 11330 | 141 text(xt, yt, labels{i}, "horizontalalignment", align)]; |
| 142 | |
| 143 else | |
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144 error ("__pie__: unknown caller '%s'", caller); |
| 11330 | 145 endif |
| 146 endfor | |
| 147 | |
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148 addlistener (gca, "view", {@update_text_pos, hlist}); |
| 11330 | 149 |
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150 if (strcmp (caller, "pie3")) |
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151 axis ([-1.25, 1.25, -1.25, 1.25, -0.05, 0.4], "equal", "off"); |
| 11330 | 152 view (-37.5, 30); |
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153 elseif (strcmp (caller, "pie")) |
| 11330 | 154 axis ([-1.5, 1.5, -1.5, 1.5], "square", "off"); |
| 155 endif | |
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156 |
| 11330 | 157 endfunction |
| 158 | |
| 159 function update_text_pos (all_handles) | |
| 160 ## Text objects in the foreground should be at the base level. | |
| 161 ## Text objects in the background should be at the top level. | |
| 162 ## Text objects on the right side should be aligned to the right | |
| 163 ## and on the left side to the left. | |
| 164 tobj = findobj (all_handles, "type", "text"); | |
| 165 | |
| 166 ## check if we are called from pie3 | |
| 167 s = findobj (all_handles, "type", "surface"); | |
| 168 is_pie3 = false; | |
| 169 if (length (s) > 0) | |
| 170 is_pie3 = true; | |
| 171 endif | |
| 172 | |
| 173 if (length (tobj) > 0) | |
| 174 ax = get (tobj(1), "parent"); | |
| 175 azel = get (ax, "view"); | |
| 176 pos = get (tobj, "position"); | |
| 177 if (iscell (pos)) | |
| 178 pos = cell2mat (pos); | |
| 179 endif | |
| 180 phi = atand (pos(:,1) ./ pos(:,2)); | |
| 181 [theta, r] = cart2pol (pos(:,1), pos(:,2)); | |
| 182 theta *= 180/pi; | |
| 183 theta -= azel(1); | |
| 184 theta = mod (theta, 360); | |
| 185 ud_mask = (theta > 180); | |
| 186 lr_mask = (theta > 90) & (theta < 270); | |
| 187 for i = 1 : length (tobj) | |
| 188 if (is_pie3) | |
| 189 if (ud_mask(i)) | |
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190 set (tobj(i), "position", [pos(i,1), pos(i,2), -0.05]); |
| 11330 | 191 else |
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192 set (tobj(i), "position", [pos(i,1), pos(i,2), 0.40]); |
| 11330 | 193 endif |
| 194 endif | |
| 195 | |
| 196 if (lr_mask(i)) | |
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197 set (tobj(i), "horizontalalignment", "right"); |
| 11330 | 198 else |
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199 set (tobj(i), "horizontalalignment", "left"); |
| 11330 | 200 endif |
| 201 endfor | |
| 202 endif | |
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203 |
| 11330 | 204 endfunction |