1 | (function (global, factory) {
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2 | typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('vega-dataflow'), require('vega-scale'), require('vega-util'), require('d3-array'), require('d3-interpolate')) :
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3 | typeof define === 'function' && define.amd ? define(['exports', 'vega-dataflow', 'vega-scale', 'vega-util', 'd3-array', 'd3-interpolate'], factory) :
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4 | (global = global || self, factory((global.vega = global.vega || {}, global.vega.transforms = {}), global.vega, global.vega, global.vega, global.d3, global.d3));
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5 | }(this, (function (exports, vegaDataflow, vegaScale, vegaUtil, d3Array, d3Interpolate) { 'use strict';
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6 |
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7 | |
8 |
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9 |
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10 |
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11 |
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12 |
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13 |
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14 |
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15 |
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16 |
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17 |
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18 |
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19 |
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20 |
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21 |
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22 |
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23 | function AxisTicks(params) {
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24 | vegaDataflow.Transform.call(this, null, params);
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25 | }
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26 |
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27 | var prototype = vegaUtil.inherits(AxisTicks, vegaDataflow.Transform);
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28 |
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29 | prototype.transform = function(_, pulse) {
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30 | if (this.value && !_.modified()) {
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31 | return pulse.StopPropagation;
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32 | }
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33 |
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34 | var locale = pulse.dataflow.locale(),
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35 | out = pulse.fork(pulse.NO_SOURCE | pulse.NO_FIELDS),
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36 | ticks = this.value,
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37 | scale = _.scale,
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38 | tally = _.count == null ? (_.values ? _.values.length : 10) : _.count,
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39 | count = vegaScale.tickCount(scale, tally, _.minstep),
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40 | format = _.format || vegaScale.tickFormat(locale, scale, count, _.formatSpecifier, _.formatType, !!_.values),
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41 | values = _.values ? vegaScale.validTicks(scale, _.values, count) : vegaScale.tickValues(scale, count);
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42 |
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43 | if (ticks) out.rem = ticks;
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44 |
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45 | ticks = values.map(function(value, i) {
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46 | return vegaDataflow.ingest({
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47 | index: i / (values.length - 1 || 1),
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48 | value: value,
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49 | label: format(value)
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50 | });
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51 | });
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52 |
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53 | if (_.extra && ticks.length) {
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54 |
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55 |
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56 | ticks.push(vegaDataflow.ingest({
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57 | index: -1,
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58 | extra: {value: ticks[0].value},
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59 | label: ''
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60 | }));
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61 | }
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62 |
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63 | out.source = ticks;
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64 | out.add = ticks;
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65 | this.value = ticks;
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66 |
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67 | return out;
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68 | };
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69 |
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70 | |
71 |
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72 |
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73 |
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74 |
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75 |
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76 |
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77 | function DataJoin(params) {
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78 | vegaDataflow.Transform.call(this, null, params);
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79 | }
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80 |
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81 | var prototype$1 = vegaUtil.inherits(DataJoin, vegaDataflow.Transform);
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82 |
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83 | function defaultItemCreate() {
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84 | return vegaDataflow.ingest({});
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85 | }
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86 |
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87 | function isExit(t) {
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88 | return t.exit;
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89 | }
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90 |
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91 | prototype$1.transform = function(_, pulse) {
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92 | var df = pulse.dataflow,
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93 | out = pulse.fork(pulse.NO_SOURCE | pulse.NO_FIELDS),
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94 | item = _.item || defaultItemCreate,
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95 | key = _.key || vegaDataflow.tupleid,
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96 | map = this.value;
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97 |
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98 |
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99 |
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100 | if (vegaUtil.isArray(out.encode)) {
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101 | out.encode = null;
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102 | }
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103 |
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104 | if (map && (_.modified('key') || pulse.modified(key))) {
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105 | vegaUtil.error('DataJoin does not support modified key function or fields.');
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106 | }
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107 |
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108 | if (!map) {
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109 | pulse = pulse.addAll();
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110 | this.value = map = vegaUtil.fastmap().test(isExit);
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111 | map.lookup = function(t) { return map.get(key(t)); };
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112 | }
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113 |
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114 | pulse.visit(pulse.ADD, function(t) {
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115 | var k = key(t),
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116 | x = map.get(k);
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117 |
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118 | if (x) {
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119 | if (x.exit) {
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120 | map.empty--;
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121 | out.add.push(x);
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122 | } else {
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123 | out.mod.push(x);
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124 | }
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125 | } else {
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126 | map.set(k, (x = item(t)));
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127 | out.add.push(x);
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128 | }
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129 |
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130 | x.datum = t;
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131 | x.exit = false;
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132 | });
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133 |
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134 | pulse.visit(pulse.MOD, function(t) {
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135 | var k = key(t),
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136 | x = map.get(k);
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137 |
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138 | if (x) {
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139 | x.datum = t;
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140 | out.mod.push(x);
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141 | }
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142 | });
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143 |
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144 | pulse.visit(pulse.REM, function(t) {
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145 | var k = key(t),
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146 | x = map.get(k);
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147 |
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148 | if (t === x.datum && !x.exit) {
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149 | out.rem.push(x);
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150 | x.exit = true;
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151 | ++map.empty;
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152 | }
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153 | });
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154 |
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155 | if (pulse.changed(pulse.ADD_MOD)) out.modifies('datum');
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156 |
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157 | if (_.clean && map.empty > df.cleanThreshold) df.runAfter(map.clean);
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158 |
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159 | return out;
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160 | };
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161 |
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162 | |
163 |
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164 |
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165 |
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166 |
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167 |
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168 |
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169 |
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170 |
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171 |
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172 |
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173 |
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174 | function Encode(params) {
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175 | vegaDataflow.Transform.call(this, null, params);
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176 | }
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177 |
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178 | var prototype$2 = vegaUtil.inherits(Encode, vegaDataflow.Transform);
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179 |
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180 | prototype$2.transform = function(_, pulse) {
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181 | var out = pulse.fork(pulse.ADD_REM),
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182 | fmod = _.mod || false,
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183 | encoders = _.encoders,
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184 | encode = pulse.encode;
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185 |
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186 |
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187 |
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188 |
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189 | if (vegaUtil.isArray(encode)) {
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190 | if (out.changed() || encode.every(function(e) { return encoders[e]; })) {
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191 | encode = encode[0];
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192 | out.encode = null;
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193 | } else {
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194 | return pulse.StopPropagation;
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195 | }
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196 | }
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197 |
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198 |
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199 | var reenter = encode === 'enter',
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200 | update = encoders.update || vegaUtil.falsy,
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201 | enter = encoders.enter || vegaUtil.falsy,
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202 | exit = encoders.exit || vegaUtil.falsy,
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203 | set = (encode && !reenter ? encoders[encode] : update) || vegaUtil.falsy;
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204 |
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205 | if (pulse.changed(pulse.ADD)) {
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206 | pulse.visit(pulse.ADD, function(t) { enter(t, _); update(t, _); });
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207 | out.modifies(enter.output);
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208 | out.modifies(update.output);
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209 | if (set !== vegaUtil.falsy && set !== update) {
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210 | pulse.visit(pulse.ADD, function(t) { set(t, _); });
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211 | out.modifies(set.output);
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212 | }
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213 | }
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214 |
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215 | if (pulse.changed(pulse.REM) && exit !== vegaUtil.falsy) {
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216 | pulse.visit(pulse.REM, function(t) { exit(t, _); });
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217 | out.modifies(exit.output);
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218 | }
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219 |
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220 | if (reenter || set !== vegaUtil.falsy) {
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221 | var flag = pulse.MOD | (_.modified() ? pulse.REFLOW : 0);
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222 | if (reenter) {
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223 | pulse.visit(flag, function(t) {
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224 | var mod = enter(t, _) || fmod;
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225 | if (set(t, _) || mod) out.mod.push(t);
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226 | });
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227 | if (out.mod.length) out.modifies(enter.output);
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228 | } else {
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229 | pulse.visit(flag, function(t) {
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230 | if (set(t, _) || fmod) out.mod.push(t);
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231 | });
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232 | }
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233 | if (out.mod.length) out.modifies(set.output);
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234 | }
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235 |
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236 | return out.changed() ? out : pulse.StopPropagation;
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237 | };
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238 |
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239 | /**
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240 | * Generates legend entries for visualizing a scale.
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241 | * @constructor
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242 | * @param {object} params - The parameters for this operator.
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243 | * @param {Scale} params.scale - The scale to generate items for.
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244 | * @param {*} [params.count=5] - The approximate number of items, or
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245 | * desired tick interval, to use.
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246 | * @param {*} [params.limit] - The maximum number of entries to
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247 | * include in a symbol legend.
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248 | * @param {Array<*>} [params.values] - The exact tick values to use.
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249 | * These must be legal domain values for the provided scale.
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250 | * If provided, the count argument is ignored.
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251 | * @param {string} [params.formatSpecifier] - A format specifier
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252 | * to use in conjunction with scale.tickFormat. Legal values are
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253 | * any valid D3 format specifier string.
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254 | * @param {function(*):string} [params.format] - The format function to use.
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255 | * If provided, the formatSpecifier argument is ignored.
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256 | */
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257 | function LegendEntries(params) {
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258 | vegaDataflow.Transform.call(this, [], params);
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259 | }
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260 |
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261 | var prototype$3 = vegaUtil.inherits(LegendEntries, vegaDataflow.Transform);
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262 |
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263 | prototype$3.transform = function(_, pulse) {
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264 | if (this.value != null && !_.modified()) {
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265 | return pulse.StopPropagation;
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266 | }
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267 |
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268 | var locale = pulse.dataflow.locale(),
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269 | out = pulse.fork(pulse.NO_SOURCE | pulse.NO_FIELDS),
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270 | items = this.value,
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271 | type = _.type || vegaScale.SymbolLegend,
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272 | scale = _.scale,
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273 | limit = +_.limit,
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274 | count = vegaScale.tickCount(scale, _.count == null ? 5 : _.count, _.minstep),
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275 | lskip = !!_.values || type === vegaScale.SymbolLegend,
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276 | format = _.format || vegaScale.labelFormat(locale, scale, count, type, _.formatSpecifier, _.formatType, lskip),
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277 | values = _.values || vegaScale.labelValues(scale, count),
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278 | domain, fraction, size, offset, ellipsis;
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279 |
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280 | if (items) out.rem = items;
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281 |
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282 | if (type === vegaScale.SymbolLegend) {
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283 | if (limit && values.length > limit) {
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284 | pulse.dataflow.warn('Symbol legend count exceeds limit, filtering items.');
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285 | items = values.slice(0, limit - 1);
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286 | ellipsis = true;
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287 | } else {
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288 | items = values;
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289 | }
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290 |
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291 | if (vegaUtil.isFunction(size = _.size)) {
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292 |
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293 | if (!_.values && scale(items[0]) === 0) {
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294 | items = items.slice(1);
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295 | }
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296 |
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297 | offset = items.reduce(function(max, value) {
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298 | return Math.max(max, size(value, _));
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299 | }, 0);
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300 | } else {
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301 | size = vegaUtil.constant(offset = size || 8);
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302 | }
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303 |
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304 | items = items.map(function(value, index) {
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305 | return vegaDataflow.ingest({
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306 | index: index,
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307 | label: format(value, index, items),
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308 | value: value,
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309 | offset: offset,
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310 | size: size(value, _)
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311 | });
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312 | });
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313 |
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314 | if (ellipsis) {
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315 | ellipsis = values[items.length];
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316 | items.push(vegaDataflow.ingest({
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317 | index: items.length,
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318 | label: `\u2026${values.length-items.length} entries`,
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319 | value: ellipsis,
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320 | offset: offset,
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321 | size: size(ellipsis, _)
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322 | }));
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323 | }
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324 | }
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325 |
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326 | else if (type === vegaScale.GradientLegend) {
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327 | domain = scale.domain(),
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328 | fraction = vegaScale.scaleFraction(scale, domain[0], vegaUtil.peek(domain));
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329 |
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330 |
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331 |
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332 | if (values.length < 3 && !_.values && domain[0] !== vegaUtil.peek(domain)) {
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333 | values = [domain[0], vegaUtil.peek(domain)];
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334 | }
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335 |
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336 | items = values.map(function(value, index) {
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337 | return vegaDataflow.ingest({
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338 | index: index,
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339 | label: format(value, index, values),
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340 | value: value,
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341 | perc: fraction(value)
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342 | });
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343 | });
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344 | }
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345 |
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346 | else {
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347 | size = values.length - 1;
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348 | fraction = vegaScale.labelFraction(scale);
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349 |
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350 | items = values.map(function(value, index) {
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351 | return vegaDataflow.ingest({
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352 | index: index,
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353 | label: format(value, index, values),
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354 | value: value,
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355 | perc: index ? fraction(value) : 0,
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356 | perc2: index === size ? 1 : fraction(values[index+1])
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357 | });
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358 | });
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359 | }
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360 |
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361 | out.source = items;
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362 | out.add = items;
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363 | this.value = items;
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364 |
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365 | return out;
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366 | };
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367 |
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368 | var Paths = vegaUtil.fastmap({
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369 | 'line': line,
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370 | 'line-radial': lineR,
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371 | 'arc': arc,
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372 | 'arc-radial': arcR,
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373 | 'curve': curve,
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374 | 'curve-radial': curveR,
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375 | 'orthogonal-horizontal': orthoX,
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376 | 'orthogonal-vertical': orthoY,
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377 | 'orthogonal-radial': orthoR,
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378 | 'diagonal-horizontal': diagonalX,
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379 | 'diagonal-vertical': diagonalY,
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380 | 'diagonal-radial': diagonalR
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381 | });
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382 |
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383 | function sourceX(t) { return t.source.x; }
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384 | function sourceY(t) { return t.source.y; }
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385 | function targetX(t) { return t.target.x; }
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386 | function targetY(t) { return t.target.y; }
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387 |
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388 | |
389 |
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390 |
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391 |
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392 |
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393 | function LinkPath(params) {
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394 | vegaDataflow.Transform.call(this, {}, params);
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395 | }
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396 |
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397 | LinkPath.Definition = {
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398 | 'type': 'LinkPath',
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399 | 'metadata': {'modifies': true},
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400 | 'params': [
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401 | { 'name': 'sourceX', 'type': 'field', 'default': 'source.x' },
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402 | { 'name': 'sourceY', 'type': 'field', 'default': 'source.y' },
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403 | { 'name': 'targetX', 'type': 'field', 'default': 'target.x' },
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404 | { 'name': 'targetY', 'type': 'field', 'default': 'target.y' },
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405 | { 'name': 'orient', 'type': 'enum', 'default': 'vertical',
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406 | 'values': ['horizontal', 'vertical', 'radial'] },
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407 | { 'name': 'shape', 'type': 'enum', 'default': 'line',
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408 | 'values': ['line', 'arc', 'curve', 'diagonal', 'orthogonal'] },
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409 | { 'name': 'require', 'type': 'signal' },
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410 | { 'name': 'as', 'type': 'string', 'default': 'path' }
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411 | ]
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412 | };
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413 |
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414 | var prototype$4 = vegaUtil.inherits(LinkPath, vegaDataflow.Transform);
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415 |
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416 | prototype$4.transform = function(_, pulse) {
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417 | var sx = _.sourceX || sourceX,
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418 | sy = _.sourceY || sourceY,
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419 | tx = _.targetX || targetX,
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420 | ty = _.targetY || targetY,
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421 | as = _.as || 'path',
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422 | orient = _.orient || 'vertical',
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423 | shape = _.shape || 'line',
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424 | path = Paths.get(shape + '-' + orient) || Paths.get(shape);
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425 |
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426 | if (!path) {
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427 | vegaUtil.error('LinkPath unsupported type: ' + _.shape
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428 | + (_.orient ? '-' + _.orient : ''));
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429 | }
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430 |
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431 | pulse.visit(pulse.SOURCE, function(t) {
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432 | t[as] = path(sx(t), sy(t), tx(t), ty(t));
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433 | });
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434 |
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435 | return pulse.reflow(_.modified()).modifies(as);
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436 | };
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437 |
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438 |
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439 |
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440 | function line(sx, sy, tx, ty) {
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441 | return 'M' + sx + ',' + sy +
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442 | 'L' + tx + ',' + ty;
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443 | }
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444 |
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445 | function lineR(sa, sr, ta, tr) {
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446 | return line(
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447 | sr * Math.cos(sa), sr * Math.sin(sa),
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448 | tr * Math.cos(ta), tr * Math.sin(ta)
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449 | );
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450 | }
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451 |
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452 | function arc(sx, sy, tx, ty) {
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453 | var dx = tx - sx,
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454 | dy = ty - sy,
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455 | rr = Math.sqrt(dx * dx + dy * dy) / 2,
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456 | ra = 180 * Math.atan2(dy, dx) / Math.PI;
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457 | return 'M' + sx + ',' + sy +
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458 | 'A' + rr + ',' + rr +
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459 | ' ' + ra + ' 0 1' +
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460 | ' ' + tx + ',' + ty;
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461 | }
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462 |
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463 | function arcR(sa, sr, ta, tr) {
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464 | return arc(
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465 | sr * Math.cos(sa), sr * Math.sin(sa),
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466 | tr * Math.cos(ta), tr * Math.sin(ta)
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467 | );
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468 | }
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469 |
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470 | function curve(sx, sy, tx, ty) {
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471 | var dx = tx - sx,
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472 | dy = ty - sy,
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473 | ix = 0.2 * (dx + dy),
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474 | iy = 0.2 * (dy - dx);
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475 | return 'M' + sx + ',' + sy +
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476 | 'C' + (sx+ix) + ',' + (sy+iy) +
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477 | ' ' + (tx+iy) + ',' + (ty-ix) +
|
478 | ' ' + tx + ',' + ty;
|
479 | }
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480 |
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481 | function curveR(sa, sr, ta, tr) {
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482 | return curve(
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483 | sr * Math.cos(sa), sr * Math.sin(sa),
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484 | tr * Math.cos(ta), tr * Math.sin(ta)
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485 | );
|
486 | }
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487 |
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488 | function orthoX(sx, sy, tx, ty) {
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489 | return 'M' + sx + ',' + sy +
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490 | 'V' + ty + 'H' + tx;
|
491 | }
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492 |
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493 | function orthoY(sx, sy, tx, ty) {
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494 | return 'M' + sx + ',' + sy +
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495 | 'H' + tx + 'V' + ty;
|
496 | }
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497 |
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498 | function orthoR(sa, sr, ta, tr) {
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499 | var sc = Math.cos(sa),
|
500 | ss = Math.sin(sa),
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501 | tc = Math.cos(ta),
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502 | ts = Math.sin(ta),
|
503 | sf = Math.abs(ta - sa) > Math.PI ? ta <= sa : ta > sa;
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504 | return 'M' + (sr*sc) + ',' + (sr*ss) +
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505 | 'A' + sr + ',' + sr + ' 0 0,' + (sf?1:0) +
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506 | ' ' + (sr*tc) + ',' + (sr*ts) +
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507 | 'L' + (tr*tc) + ',' + (tr*ts);
|
508 | }
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509 |
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510 | function diagonalX(sx, sy, tx, ty) {
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511 | var m = (sx + tx) / 2;
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512 | return 'M' + sx + ',' + sy +
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513 | 'C' + m + ',' + sy +
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514 | ' ' + m + ',' + ty +
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515 | ' ' + tx + ',' + ty;
|
516 | }
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517 |
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518 | function diagonalY(sx, sy, tx, ty) {
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519 | var m = (sy + ty) / 2;
|
520 | return 'M' + sx + ',' + sy +
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521 | 'C' + sx + ',' + m +
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522 | ' ' + tx + ',' + m +
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523 | ' ' + tx + ',' + ty;
|
524 | }
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525 |
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526 | function diagonalR(sa, sr, ta, tr) {
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527 | var sc = Math.cos(sa),
|
528 | ss = Math.sin(sa),
|
529 | tc = Math.cos(ta),
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530 | ts = Math.sin(ta),
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531 | mr = (sr + tr) / 2;
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532 | return 'M' + (sr*sc) + ',' + (sr*ss) +
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533 | 'C' + (mr*sc) + ',' + (mr*ss) +
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534 | ' ' + (mr*tc) + ',' + (mr*ts) +
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535 | ' ' + (tr*tc) + ',' + (tr*ts);
|
536 | }
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537 |
|
538 | |
539 |
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540 |
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541 |
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542 |
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543 |
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544 |
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545 |
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546 |
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547 | function Pie(params) {
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548 | vegaDataflow.Transform.call(this, null, params);
|
549 | }
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550 |
|
551 | Pie.Definition = {
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552 | 'type': 'Pie',
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553 | 'metadata': {'modifies': true},
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554 | 'params': [
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555 | { 'name': 'field', 'type': 'field' },
|
556 | { 'name': 'startAngle', 'type': 'number', 'default': 0 },
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557 | { 'name': 'endAngle', 'type': 'number', 'default': 6.283185307179586 },
|
558 | { 'name': 'sort', 'type': 'boolean', 'default': false },
|
559 | { 'name': 'as', 'type': 'string', 'array': true, 'length': 2, 'default': ['startAngle', 'endAngle'] }
|
560 | ]
|
561 | };
|
562 |
|
563 | var prototype$5 = vegaUtil.inherits(Pie, vegaDataflow.Transform);
|
564 |
|
565 | prototype$5.transform = function(_, pulse) {
|
566 | var as = _.as || ['startAngle', 'endAngle'],
|
567 | startAngle = as[0],
|
568 | endAngle = as[1],
|
569 | field = _.field || vegaUtil.one,
|
570 | start = _.startAngle || 0,
|
571 | stop = _.endAngle != null ? _.endAngle : 2 * Math.PI,
|
572 | data = pulse.source,
|
573 | values = data.map(field),
|
574 | n = values.length,
|
575 | a = start,
|
576 | k = (stop - start) / d3Array.sum(values),
|
577 | index = d3Array.range(n),
|
578 | i, t, v;
|
579 |
|
580 | if (_.sort) {
|
581 | index.sort(function(a, b) {
|
582 | return values[a] - values[b];
|
583 | });
|
584 | }
|
585 |
|
586 | for (i=0; i<n; ++i) {
|
587 | v = values[index[i]];
|
588 | t = data[index[i]];
|
589 | t[startAngle] = a;
|
590 | t[endAngle] = (a += v * k);
|
591 | }
|
592 |
|
593 | this.value = values;
|
594 | return pulse.reflow(_.modified()).modifies(as);
|
595 | };
|
596 |
|
597 | var DEFAULT_COUNT = 5;
|
598 |
|
599 | function includeZero(scale) {
|
600 | const type = scale.type;
|
601 | return !scale.bins && (
|
602 | type === vegaScale.Linear || type === vegaScale.Pow || type === vegaScale.Sqrt
|
603 | );
|
604 | }
|
605 |
|
606 | function includePad(type) {
|
607 | return vegaScale.isContinuous(type) && type !== vegaScale.Sequential;
|
608 | }
|
609 |
|
610 | var SKIP = vegaUtil.toSet([
|
611 | 'set', 'modified', 'clear', 'type', 'scheme', 'schemeExtent', 'schemeCount',
|
612 | 'domain', 'domainMin', 'domainMid', 'domainMax',
|
613 | 'domainRaw', 'domainImplicit', 'nice', 'zero', 'bins',
|
614 | 'range', 'rangeStep', 'round', 'reverse', 'interpolate', 'interpolateGamma'
|
615 | ]);
|
616 |
|
617 | |
618 |
|
619 |
|
620 |
|
621 |
|
622 | function Scale(params) {
|
623 | vegaDataflow.Transform.call(this, null, params);
|
624 | this.modified(true);
|
625 | }
|
626 |
|
627 | var prototype$6 = vegaUtil.inherits(Scale, vegaDataflow.Transform);
|
628 |
|
629 | prototype$6.transform = function(_, pulse) {
|
630 | var df = pulse.dataflow,
|
631 | scale = this.value,
|
632 | key = scaleKey(_);
|
633 |
|
634 | if (!scale || key !== scale.type) {
|
635 | this.value = scale = vegaScale.scale(key)();
|
636 | }
|
637 |
|
638 | for (key in _) if (!SKIP[key]) {
|
639 |
|
640 | if (key === 'padding' && includePad(scale.type)) continue;
|
641 |
|
642 | vegaUtil.isFunction(scale[key])
|
643 | ? scale[key](_[key])
|
644 | : df.warn('Unsupported scale property: ' + key);
|
645 | }
|
646 |
|
647 | configureRange(scale, _,
|
648 | configureBins(scale, _, configureDomain(scale, _, df))
|
649 | );
|
650 |
|
651 | return pulse.fork(pulse.NO_SOURCE | pulse.NO_FIELDS);
|
652 | };
|
653 |
|
654 | function scaleKey(_) {
|
655 | var t = _.type, d = '', n;
|
656 |
|
657 |
|
658 | if (t === vegaScale.Sequential) return vegaScale.Sequential + '-' + vegaScale.Linear;
|
659 |
|
660 | if (isContinuousColor(_)) {
|
661 | n = _.rawDomain ? _.rawDomain.length
|
662 | : _.domain ? _.domain.length + +(_.domainMid != null)
|
663 | : 0;
|
664 | d = n === 2 ? vegaScale.Sequential + '-'
|
665 | : n === 3 ? vegaScale.Diverging + '-'
|
666 | : '';
|
667 | }
|
668 |
|
669 | return ((d + t) || vegaScale.Linear).toLowerCase();
|
670 | }
|
671 |
|
672 | function isContinuousColor(_) {
|
673 | const t = _.type;
|
674 | return vegaScale.isContinuous(t) && t !== vegaScale.Time && t !== vegaScale.UTC && (
|
675 | _.scheme || _.range && _.range.length && _.range.every(vegaUtil.isString)
|
676 | );
|
677 | }
|
678 |
|
679 | function configureDomain(scale, _, df) {
|
680 |
|
681 | var raw = rawDomain(scale, _.domainRaw, df);
|
682 | if (raw > -1) return raw;
|
683 |
|
684 | var domain = _.domain,
|
685 | type = scale.type,
|
686 | zero = _.zero || (_.zero === undefined && includeZero(scale)),
|
687 | n, mid;
|
688 |
|
689 | if (!domain) return 0;
|
690 |
|
691 |
|
692 | if (includePad(type) && _.padding && domain[0] !== vegaUtil.peek(domain)) {
|
693 | domain = padDomain(type, domain, _.range, _.padding, _.exponent, _.constant);
|
694 | }
|
695 |
|
696 |
|
697 | if (zero || _.domainMin != null || _.domainMax != null || _.domainMid != null) {
|
698 | n = ((domain = domain.slice()).length - 1) || 1;
|
699 | if (zero) {
|
700 | if (domain[0] > 0) domain[0] = 0;
|
701 | if (domain[n] < 0) domain[n] = 0;
|
702 | }
|
703 | if (_.domainMin != null) domain[0] = _.domainMin;
|
704 | if (_.domainMax != null) domain[n] = _.domainMax;
|
705 |
|
706 | if (_.domainMid != null) {
|
707 | mid = _.domainMid;
|
708 | if (mid < domain[0] || mid > domain[n]) {
|
709 | df.warn('Scale domainMid exceeds domain min or max.', mid);
|
710 | }
|
711 | domain.splice(n, 0, mid);
|
712 | }
|
713 | }
|
714 |
|
715 |
|
716 | scale.domain(domainCheck(type, domain, df));
|
717 |
|
718 |
|
719 |
|
720 | if (type === vegaScale.Ordinal) {
|
721 | scale.unknown(_.domainImplicit ? vegaScale.scaleImplicit : undefined);
|
722 | }
|
723 |
|
724 |
|
725 | if (_.nice && scale.nice) {
|
726 | scale.nice((_.nice !== true && vegaScale.tickCount(scale, _.nice)) || null);
|
727 | }
|
728 |
|
729 |
|
730 | return domain.length;
|
731 | }
|
732 |
|
733 | function rawDomain(scale, raw, df) {
|
734 | if (raw) {
|
735 | scale.domain(domainCheck(scale.type, raw, df));
|
736 | return raw.length;
|
737 | } else {
|
738 | return -1;
|
739 | }
|
740 | }
|
741 |
|
742 | function padDomain(type, domain, range, pad, exponent, constant) {
|
743 | var span = Math.abs(vegaUtil.peek(range) - range[0]),
|
744 | frac = span / (span - 2 * pad),
|
745 | d = type === vegaScale.Log ? vegaUtil.zoomLog(domain, null, frac)
|
746 | : type === vegaScale.Sqrt ? vegaUtil.zoomPow(domain, null, frac, 0.5)
|
747 | : type === vegaScale.Pow ? vegaUtil.zoomPow(domain, null, frac, exponent || 1)
|
748 | : type === vegaScale.Symlog ? vegaUtil.zoomSymlog(domain, null, frac, constant || 1)
|
749 | : vegaUtil.zoomLinear(domain, null, frac);
|
750 |
|
751 | domain = domain.slice();
|
752 | domain[0] = d[0];
|
753 | domain[domain.length-1] = d[1];
|
754 | return domain;
|
755 | }
|
756 |
|
757 | function domainCheck(type, domain, df) {
|
758 | if (vegaScale.isLogarithmic(type)) {
|
759 |
|
760 |
|
761 | var s = Math.abs(domain.reduce(function(s, v) {
|
762 | return s + (v < 0 ? -1 : v > 0 ? 1 : 0);
|
763 | }, 0));
|
764 |
|
765 | if (s !== domain.length) {
|
766 | df.warn('Log scale domain includes zero: ' + vegaUtil.stringValue(domain));
|
767 | }
|
768 | }
|
769 | return domain;
|
770 | }
|
771 |
|
772 | function configureBins(scale, _, count) {
|
773 | let bins = _.bins;
|
774 |
|
775 | if (bins && !vegaUtil.isArray(bins)) {
|
776 |
|
777 | let domain = scale.domain(),
|
778 | lo = domain[0],
|
779 | hi = vegaUtil.peek(domain),
|
780 | start = bins.start == null ? lo : bins.start,
|
781 | stop = bins.stop == null ? hi : bins.stop,
|
782 | step = bins.step;
|
783 |
|
784 | if (!step) vegaUtil.error('Scale bins parameter missing step property.');
|
785 | if (start < lo) start = step * Math.ceil(lo / step);
|
786 | if (stop > hi) stop = step * Math.floor(hi / step);
|
787 | bins = d3Array.range(start, stop + step / 2, step);
|
788 | }
|
789 |
|
790 | if (bins) {
|
791 |
|
792 | scale.bins = bins;
|
793 | } else if (scale.bins) {
|
794 |
|
795 | delete scale.bins;
|
796 | }
|
797 |
|
798 |
|
799 | if (scale.type === vegaScale.BinOrdinal) {
|
800 | if (!bins) {
|
801 |
|
802 | scale.bins = scale.domain();
|
803 | } else if (!_.domain && !_.domainRaw) {
|
804 |
|
805 | scale.domain(bins);
|
806 | count = bins.length;
|
807 | }
|
808 | }
|
809 |
|
810 |
|
811 | return count;
|
812 | }
|
813 |
|
814 | function configureRange(scale, _, count) {
|
815 | var type = scale.type,
|
816 | round = _.round || false,
|
817 | range = _.range;
|
818 |
|
819 |
|
820 | if (_.rangeStep != null) {
|
821 | range = configureRangeStep(type, _, count);
|
822 | }
|
823 |
|
824 |
|
825 | else if (_.scheme) {
|
826 | range = configureScheme(type, _, count);
|
827 | if (vegaUtil.isFunction(range)) {
|
828 | if (scale.interpolator) {
|
829 | return scale.interpolator(range);
|
830 | } else {
|
831 | vegaUtil.error(`Scale type ${type} does not support interpolating color schemes.`);
|
832 | }
|
833 | }
|
834 | }
|
835 |
|
836 |
|
837 | if (range && vegaScale.isInterpolating(type)) {
|
838 | return scale.interpolator(
|
839 | vegaScale.interpolateColors(flip(range, _.reverse), _.interpolate, _.interpolateGamma)
|
840 | );
|
841 | }
|
842 |
|
843 |
|
844 | if (range && _.interpolate && scale.interpolate) {
|
845 | scale.interpolate(vegaScale.interpolate(_.interpolate, _.interpolateGamma));
|
846 | } else if (vegaUtil.isFunction(scale.round)) {
|
847 | scale.round(round);
|
848 | } else if (vegaUtil.isFunction(scale.rangeRound)) {
|
849 | scale.interpolate(round ? d3Interpolate.interpolateRound : d3Interpolate.interpolate);
|
850 | }
|
851 |
|
852 | if (range) scale.range(flip(range, _.reverse));
|
853 | }
|
854 |
|
855 | function configureRangeStep(type, _, count) {
|
856 | if (type !== vegaScale.Band && type !== vegaScale.Point) {
|
857 | vegaUtil.error('Only band and point scales support rangeStep.');
|
858 | }
|
859 |
|
860 |
|
861 | var outer = (_.paddingOuter != null ? _.paddingOuter : _.padding) || 0,
|
862 | inner = type === vegaScale.Point ? 1
|
863 | : ((_.paddingInner != null ? _.paddingInner : _.padding) || 0);
|
864 | return [0, _.rangeStep * vegaScale.bandSpace(count, inner, outer)];
|
865 | }
|
866 |
|
867 | function configureScheme(type, _, count) {
|
868 | var extent = _.schemeExtent,
|
869 | name, scheme;
|
870 |
|
871 | if (vegaUtil.isArray(_.scheme)) {
|
872 | scheme = vegaScale.interpolateColors(_.scheme, _.interpolate, _.interpolateGamma);
|
873 | } else {
|
874 | name = _.scheme.toLowerCase();
|
875 | scheme = vegaScale.scheme(name);
|
876 | if (!scheme) vegaUtil.error(`Unrecognized scheme name: ${_.scheme}`);
|
877 | }
|
878 |
|
879 |
|
880 | count = (type === vegaScale.Threshold) ? count + 1
|
881 | : (type === vegaScale.BinOrdinal) ? count - 1
|
882 | : (type === vegaScale.Quantile || type === vegaScale.Quantize) ? (+_.schemeCount || DEFAULT_COUNT)
|
883 | : count;
|
884 |
|
885 |
|
886 | return vegaScale.isInterpolating(type) ? adjustScheme(scheme, extent, _.reverse)
|
887 | : vegaUtil.isFunction(scheme) ? vegaScale.quantizeInterpolator(adjustScheme(scheme, extent), count)
|
888 | : type === vegaScale.Ordinal ? scheme : scheme.slice(0, count);
|
889 | }
|
890 |
|
891 | function adjustScheme(scheme, extent, reverse) {
|
892 | return (vegaUtil.isFunction(scheme) && (extent || reverse))
|
893 | ? vegaScale.interpolateRange(scheme, flip(extent || [0, 1], reverse))
|
894 | : scheme;
|
895 | }
|
896 |
|
897 | function flip(array, reverse) {
|
898 | return reverse ? array.slice().reverse() : array;
|
899 | }
|
900 |
|
901 | |
902 |
|
903 |
|
904 |
|
905 |
|
906 |
|
907 |
|
908 | function SortItems(params) {
|
909 | vegaDataflow.Transform.call(this, null, params);
|
910 | }
|
911 |
|
912 | var prototype$7 = vegaUtil.inherits(SortItems, vegaDataflow.Transform);
|
913 |
|
914 | prototype$7.transform = function(_, pulse) {
|
915 | var mod = _.modified('sort')
|
916 | || pulse.changed(pulse.ADD)
|
917 | || pulse.modified(_.sort.fields)
|
918 | || pulse.modified('datum');
|
919 |
|
920 | if (mod) pulse.source.sort(vegaDataflow.stableCompare(_.sort));
|
921 |
|
922 | this.modified(mod);
|
923 | return pulse;
|
924 | };
|
925 |
|
926 | var Zero = 'zero',
|
927 | Center = 'center',
|
928 | Normalize = 'normalize',
|
929 | DefOutput = ['y0', 'y1'];
|
930 |
|
931 | |
932 |
|
933 |
|
934 |
|
935 |
|
936 |
|
937 |
|
938 |
|
939 |
|
940 | function Stack(params) {
|
941 | vegaDataflow.Transform.call(this, null, params);
|
942 | }
|
943 |
|
944 | Stack.Definition = {
|
945 | 'type': 'Stack',
|
946 | 'metadata': {'modifies': true},
|
947 | 'params': [
|
948 | { 'name': 'field', 'type': 'field' },
|
949 | { 'name': 'groupby', 'type': 'field', 'array': true },
|
950 | { 'name': 'sort', 'type': 'compare' },
|
951 | { 'name': 'offset', 'type': 'enum', 'default': Zero, 'values': [Zero, Center, Normalize] },
|
952 | { 'name': 'as', 'type': 'string', 'array': true, 'length': 2, 'default': DefOutput }
|
953 | ]
|
954 | };
|
955 |
|
956 | var prototype$8 = vegaUtil.inherits(Stack, vegaDataflow.Transform);
|
957 |
|
958 | prototype$8.transform = function(_, pulse) {
|
959 | var as = _.as || DefOutput,
|
960 | y0 = as[0],
|
961 | y1 = as[1],
|
962 | sort = vegaDataflow.stableCompare(_.sort),
|
963 | field = _.field || vegaUtil.one,
|
964 | stack = _.offset === Center ? stackCenter
|
965 | : _.offset === Normalize ? stackNormalize
|
966 | : stackZero,
|
967 | groups, i, n, max;
|
968 |
|
969 |
|
970 | groups = partition(pulse.source, _.groupby, sort, field);
|
971 |
|
972 |
|
973 | for (i=0, n=groups.length, max=groups.max; i<n; ++i) {
|
974 | stack(groups[i], max, field, y0, y1);
|
975 | }
|
976 |
|
977 | return pulse.reflow(_.modified()).modifies(as);
|
978 | };
|
979 |
|
980 | function stackCenter(group, max, field, y0, y1) {
|
981 | var last = (max - group.sum) / 2,
|
982 | m = group.length,
|
983 | j = 0, t;
|
984 |
|
985 | for (; j<m; ++j) {
|
986 | t = group[j];
|
987 | t[y0] = last;
|
988 | t[y1] = (last += Math.abs(field(t)));
|
989 | }
|
990 | }
|
991 |
|
992 | function stackNormalize(group, max, field, y0, y1) {
|
993 | var scale = 1 / group.sum,
|
994 | last = 0,
|
995 | m = group.length,
|
996 | j = 0, v = 0, t;
|
997 |
|
998 | for (; j<m; ++j) {
|
999 | t = group[j];
|
1000 | t[y0] = last;
|
1001 | t[y1] = last = scale * (v += Math.abs(field(t)));
|
1002 | }
|
1003 | }
|
1004 |
|
1005 | function stackZero(group, max, field, y0, y1) {
|
1006 | var lastPos = 0,
|
1007 | lastNeg = 0,
|
1008 | m = group.length,
|
1009 | j = 0, v, t;
|
1010 |
|
1011 | for (; j<m; ++j) {
|
1012 | t = group[j];
|
1013 | v = +field(t);
|
1014 | if (v < 0) {
|
1015 | t[y0] = lastNeg;
|
1016 | t[y1] = (lastNeg += v);
|
1017 | } else {
|
1018 | t[y0] = lastPos;
|
1019 | t[y1] = (lastPos += v);
|
1020 | }
|
1021 | }
|
1022 | }
|
1023 |
|
1024 | function partition(data, groupby, sort, field) {
|
1025 | var groups = [],
|
1026 | get = function(f) { return f(t); },
|
1027 | map, i, n, m, t, k, g, s, max;
|
1028 |
|
1029 |
|
1030 | if (groupby == null) {
|
1031 | groups.push(data.slice());
|
1032 | } else {
|
1033 | for (map={}, i=0, n=data.length; i<n; ++i) {
|
1034 | t = data[i];
|
1035 | k = groupby.map(get);
|
1036 | g = map[k];
|
1037 | if (!g) {
|
1038 | map[k] = (g = []);
|
1039 | groups.push(g);
|
1040 | }
|
1041 | g.push(t);
|
1042 | }
|
1043 | }
|
1044 |
|
1045 |
|
1046 | for (k=0, max=0, m=groups.length; k<m; ++k) {
|
1047 | g = groups[k];
|
1048 | for (i=0, s=0, n=g.length; i<n; ++i) {
|
1049 | s += Math.abs(field(g[i]));
|
1050 | }
|
1051 | g.sum = s;
|
1052 | if (s > max) max = s;
|
1053 | if (sort) g.sort(sort);
|
1054 | }
|
1055 | groups.max = max;
|
1056 |
|
1057 | return groups;
|
1058 | }
|
1059 |
|
1060 | exports.axisticks = AxisTicks;
|
1061 | exports.datajoin = DataJoin;
|
1062 | exports.encode = Encode;
|
1063 | exports.legendentries = LegendEntries;
|
1064 | exports.linkpath = LinkPath;
|
1065 | exports.pie = Pie;
|
1066 | exports.scale = Scale;
|
1067 | exports.sortitems = SortItems;
|
1068 | exports.stack = Stack;
|
1069 |
|
1070 | Object.defineProperty(exports, '__esModule', { value: true });
|
1071 |
|
1072 | })));
|