1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 | 1 1 1 1 2 10 10 1 2 2 6 6 2 6 6 1 6 2 4 2 2 1 8 8 4 4 2 2 1 6 6 2 1 1 1 1 1 2 2 2 2 2 1 1 1 1 1 2 2 2 2 2 2 6 4 2 2 1 2 2 2 2 2 2 2 2 1 283 1 282 282 282 72 35 37 1 38 708 | 'use strict'; require('../globals'); var util = require('../util'), time = require('./time'), colorbrewer = require('colorbrewer'), interpolateLab = require('d3-color').interpolateLab; var scale = module.exports = {}; scale.names = function(props) { return util.keys(util.keys(props).reduce(function(a, x) { if (props[x] && props[x].scale) a[props[x].scale] = 1; return a; }, {})); }; scale.defs = function(names, encoding, layout, stats, style, sorting, opt) { opt = opt || {}; return names.reduce(function(a, name) { var s = { name: name, type: scale.type(name, encoding), domain: scale.domain(name, encoding, sorting, opt) }; if (s.type === 'ordinal' && !encoding.bin(name) && encoding.sort(name).length === 0) { s.sort = true; } scale_range(s, encoding, layout, stats, style, opt); return (a.push(s), a); }, []); }; scale.type = function(name, encoding) { switch (encoding.type(name)) { case N: //fall through case O: return 'ordinal'; case T: var timeUnit = encoding.timeUnit(name); return (timeUnit && time.scale.type(timeUnit, name)) || 'time'; case Q: if (encoding.bin(name)) { return name === COLOR ? 'linear' : 'ordinal'; } return encoding.scale(name).type; } }; scale.domain = function (name, encoding, sorting, opt) { Iif (encoding.isType(name, T)) { var range = time.scale.domain(encoding.timeUnit(name), name); if(range) return range; } if (name == opt.stack) { return { data: STACKED, field: encoding.fieldRef(name, { data: !encoding._vega2, prefn: (opt.facet ? 'max_' : '') + 'sum_' }) }; } if (encoding.aggregate(name) == 'count' || encoding.bin(name) || encoding.isType(name, T) ) { return {data: sorting.getDataset(name), field: encoding.field(name)}; } return {data: RAW, field: encoding.fieldRef(name, {nofn: true})}; // return {data: sorting.getDataset(name), field: encoding.field(name)}; }; function scale_range(s, encoding, layout, stats, style, opt) { // jshint unused:false var spec = encoding.scale(s.name); switch (s.name) { case X: if (s.type === 'ordinal') { s.bandWidth = encoding.bandSize(X, layout.x.useSmallBand); } else { s.range = layout.cellWidth ? [0, layout.cellWidth] : 'width'; Iif (encoding.isType(s.name,T) && encoding.timeUnit(s.name) === 'year') { s.zero = false; } else { s.zero = spec.zero === undefined ? true : spec.zero; } s.reverse = spec.reverse; } s.round = true; Iif (s.type === 'time') { s.nice = encoding.timeUnit(s.name); }else { s.nice = true; } break; case Y: if (s.type === 'ordinal') { s.bandWidth = encoding.bandSize(Y, layout.y.useSmallBand); } else { s.range = layout.cellHeight ? [layout.cellHeight, 0] : 'height'; Iif (encoding.isType(s.name,T) && encoding.timeUnit(s.name) === 'year') { s.zero = false; } else { s.zero = spec.zero === undefined ? true : spec.zero; } s.reverse = spec.reverse; } s.round = true; Iif (s.type === 'time') { s.nice = encoding.timeUnit(s.name) || encoding.config('timeScaleNice'); }else { s.nice = true; } break; case ROW: // support only ordinal s.bandWidth = layout.cellHeight; s.round = true; s.nice = true; break; case COL: // support only ordinal s.bandWidth = layout.cellWidth; s.round = true; s.nice = true; break; case SIZE: if (encoding.is('bar')) { // FIXME this is definitely incorrect // but let's fix it later since bar size is a bad encoding anyway s.range = [3, Math.max(encoding.bandSize(X), encoding.bandSize(Y))]; } else if (encoding.is(TEXT)) { s.range = [8, 40]; } else { //point var bandSize = Math.min(encoding.bandSize(X), encoding.bandSize(Y)) - 1; s.range = [10, 0.8 * bandSize*bandSize]; } s.round = true; s.zero = false; break; case SHAPE: s.range = 'shapes'; break; case COLOR: s.range = scale.color(s, encoding, stats); break; case ALPHA: s.range = [0.2, 1.0]; break; default: throw new Error('Unknown encoding name: '+ s.name); } switch (s.name) { case ROW: case COL: s.padding = encoding.config('cellPadding'); s.outerPadding = 0; break; case X: case Y: if (s.type === 'ordinal') { //&& !s.bandWidth s.points = true; s.padding = encoding.band(s.name).padding; } } } scale.color = function(s, encoding, stats) { var range = encoding.scale(COLOR).range, cardinality = encoding.cardinality(COLOR, stats), type = encoding.type(COLOR); Eif (range === undefined) { var ordinalPalette = encoding.config('ordinalPalette'); Eif (s.type === 'ordinal') { Iif (type === N) { // use categorical color scale if (cardinality <= 10) { range = encoding.config('c10palette'); } else { range = encoding.config('c20palette'); } } else { Iif (cardinality <= 2) { range = [colorbrewer[ordinalPalette][3][0], colorbrewer[ordinalPalette][3][2]]; } else { range = ordinalPalette; } } } else { //time or quantitative var palette = colorbrewer[ordinalPalette][9]; range = [palette[0], palette[8]]; s.zero = false; } } return scale.color.palette(range, cardinality, type); }; scale.color.palette = function(range, cardinality, type) { switch (range) { case 'category10k': // tableau's category 10, ordered by perceptual kernel study results // https://github.com/uwdata/perceptual-kernels return ['#2ca02c', '#e377c2', '#7f7f7f', '#17becf', '#8c564b', '#d62728', '#bcbd22', '#9467bd', '#ff7f0e', '#1f77b4']; // d3/tableau category10/20/20b/20c case 'category10': return ['#1f77b4', '#ff7f0e', '#2ca02c', '#d62728', '#9467bd', '#8c564b', '#e377c2', '#7f7f7f', '#bcbd22', '#17becf']; case 'category20': return ['#1f77b4', '#aec7e8', '#ff7f0e', '#ffbb78', '#2ca02c', '#98df8a', '#d62728', '#ff9896', '#9467bd', '#c5b0d5', '#8c564b', '#c49c94', '#e377c2', '#f7b6d2', '#7f7f7f', '#c7c7c7', '#bcbd22', '#dbdb8d', '#17becf', '#9edae5']; case 'category20b': return ['#393b79', '#5254a3', '#6b6ecf', '#9c9ede', '#637939', '#8ca252', '#b5cf6b', '#cedb9c', '#8c6d31', '#bd9e39', '#e7ba52', '#e7cb94', '#843c39', '#ad494a', '#d6616b', '#e7969c', '#7b4173', '#a55194', '#ce6dbd', '#de9ed6']; case 'category20c': return ['#3182bd', '#6baed6', '#9ecae1', '#c6dbef', '#e6550d', '#fd8d3c', '#fdae6b', '#fdd0a2', '#31a354', '#74c476', '#a1d99b', '#c7e9c0', '#756bb1', '#9e9ac8', '#bcbddc', '#dadaeb', '#636363', '#969696', '#bdbdbd', '#d9d9d9']; } Eif (range in colorbrewer) { var palette = colorbrewer[range], ps = 5; // if cardinality pre-defined, use it. if (cardinality in palette) return palette[cardinality]; // if not, use the highest cardinality one for nominal if (type === N) { return palette[Math.max.apply(null, util.keys(palette))]; } // otherwise, interpolate return scale.color.interpolate(palette[ps][0], palette[ps][ps-1], cardinality); } return range; }; scale.color.interpolate = function (start, end, cardinality) { var interpolator = interpolateLab(start, end); return util.range(cardinality).map(function(i) { return interpolator(i*1.0/(cardinality-1)); }); }; |