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checked in by (none), 14 years ago
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1 | function colors = RYB_colors(n)
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2 | % RYB_colors A good diverging colormap.
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3 | % RYB_colors(n) returns an RGB matrix of n colors (default 7).
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4 | % These colors form a diverging colormap (colors easily perceived to lie
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5 | % on a sequence on either side of a central color).
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6 | %
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7 | % Example:
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8 | % colormap(RYB_colors)
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9 | %
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10 | % See also YR_colors.
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11 |
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12 | % Written by Tom Minka
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13 |
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14 | if nargin < 1
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15 | n = 7;
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16 | end
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17 |
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18 | % In R: col2rgb(RYB.colors(3))
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19 | switch n
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20 | case 7,
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21 | colors = [
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22 | 215 61 41;
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23 | 252 141 89;
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24 | 254 224 144;
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25 | 255 255 191;
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26 | 224 243 248;
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27 | 145 191 219;
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28 | 69 117 180
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29 | ]/255;
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30 | case 6,
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31 | colors = [
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32 | 215 61 41
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33 | 252 141 89
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34 | 254 224 144
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35 | 224 243 248
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36 | 145 191 219
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37 | 69 117 180
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38 | ]/255;
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39 | case 5,
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40 | colors = [
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41 | 202 55 59
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42 | 253 174 97
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43 | 255 255 191
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44 | 171 217 233
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45 | 44 123 182
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46 | ]/255;
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47 | case 4,
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48 | colors = [
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49 | 202 55 59;
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50 | 253 174 97
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51 | 171 217 233;
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52 | 44 123 182
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53 | ]/255;
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54 | case 3,
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55 | colors = [
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56 | 252 141 89;
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57 | 255 255 191;
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58 | 145 191 219
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59 | ]/255;
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60 | end
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