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38 lines
1.1 KiB
38 lines
1.1 KiB
import { __read } from "tslib";
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import { clone, min, minBy, max, maxBy } from '@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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export 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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min(minBy(data, function (arr) { return min(arr) || 0; })),
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max(maxBy(data, function (arr) { return 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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export function getStackedData(_) {
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var data = 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 = __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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