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42 lines
1.3 KiB
42 lines
1.3 KiB
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.getRange = getRange;
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exports.getStackedData = getStackedData;
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var tslib_1 = require("tslib");
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var util_1 = require("@antv/util");
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/**
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* 获得数据的最值
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*/
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function getRange(data) {
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if (data.length === 0)
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return [0, 0];
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return [
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(0, util_1.min)((0, util_1.minBy)(data, function (arr) { return (0, util_1.min)(arr) || 0; })),
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(0, util_1.max)((0, util_1.maxBy)(data, function (arr) { return (0, util_1.max)(arr) || 0; })),
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];
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}
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/**
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* 数据转换为堆叠数据
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*/
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function getStackedData(_) {
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var data = (0, util_1.clone)(_);
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// 生成堆叠数据
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var datumLen = data[0].length;
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// 上一个堆叠的数据值，分别记录正负
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var _a = tslib_1.__read([Array(datumLen).fill(0), Array(datumLen).fill(0)], 2), positivePrev = _a[0], negativePrev = _a[1];
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for (var i = 0; i < data.length; i += 1) {
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var datum = data[i];
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for (var j = 0; j < datumLen; j += 1) {
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if (datum[j] >= 0) {
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datum[j] += positivePrev[j];
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positivePrev[j] = datum[j];
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}
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else {
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datum[j] += negativePrev[j];
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negativePrev[j] = datum[j];
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}
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}
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}
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return data;
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}
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//# sourceMappingURL=utils.js.map
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