63 lines
2.1 KiB
JavaScript
63 lines
2.1 KiB
JavaScript
define(function (require) {
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var quantile = require('./quantile');
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var numberUtil = require('echarts').number;
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/**
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* Helper method for preparing data.
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* @param {Array.<number>} rawData like
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* [
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* [12,232,443], (raw data set for the first box)
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* [3843,5545,1232], (raw datat set for the second box)
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* ...
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* ]
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* @param {Object} [opt]
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*
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* @param {(number|string)} [opt.boundIQR=1.5] Data less than min bound is outlier.
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* default 1.5, means Q1 - 1.5 * (Q3 - Q1).
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* If pass 'none', min bound will not be used.
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* @param {(number|string)} [opt.layout='horizontal']
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* Box plot layout, can be 'horizontal' or 'vertical'
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*/
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return function (rawData, opt) {
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opt = opt || [];
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var boxData = [];
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var outliers = [];
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var axisData = [];
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var boundIQR = opt.boundIQR;
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for (var i = 0; i < rawData.length; i++) {
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axisData.push(i + '');
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var ascList = numberUtil.asc(rawData[i].slice());
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var Q1 = quantile(ascList, 0.25);
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var Q2 = quantile(ascList, 0.5);
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var Q3 = quantile(ascList, 0.75);
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var IQR = Q3 - Q1;
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var low = boundIQR === 'none'
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? ascList[0]
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: Q1 - (boundIQR == null ? 1.5 : boundIQR) * IQR;
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var high = boundIQR === 'none'
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? ascList[ascList.length - 1]
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: Q3 + (boundIQR == null ? 1.5 : boundIQR) * IQR;
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boxData.push([low, Q1, Q2, Q3, high]);
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for (var j = 0; j < ascList.length; j++) {
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var dataItem = ascList[j];
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if (dataItem < low || dataItem > high) {
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var outlier = [i, dataItem];
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opt.layout === 'vertical' && outlier.reverse();
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outliers.push(outlier);
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}
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}
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}
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return {
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boxData: boxData,
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outliers: outliers,
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axisData: axisData
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};
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};
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}); |