@visactor/vmind/esm/atom/dataInsight/algorithms/volatility/index.js

<div align="center"> <a href="https://github.com/VisActor#gh-light-mode-only" target="_blank"> <img alt="VisActor Logo" width="200" src="https://github.com/VisActor/.github/blob/main/profile/logo_500_200_light.svg"/> </a> <a href="https://githu

import { isArray } from "@visactor/vutils";

import { coefficientVariation } from "../statistics";

import { InsightType } from "../../type";

import { ChartType } from "../../../../types";

import { isPercenSeries } from "../../utils";

const volatilityAlgo = (context, optioins) => {
    const {seriesDataMap: seriesDataMap, cell: cell, spec: spec} = context, {threshold: threshold = .8} = optioins || {}, {y: celly} = cell, yField = isArray(celly) ? celly.flat() : [ celly ], result = [];
    return Object.keys(seriesDataMap).forEach((series => {
        const seriesDataset = seriesDataMap[series].map((d => d.dataItem));
        yField.forEach((measureId => {
            if (isPercenSeries(spec, measureId)) return;
            const measureSet = seriesDataset.map((d => Number(d[measureId]))), cv = coefficientVariation(measureSet);
            Math.abs(cv) > threshold && result.push({
                type: InsightType.Volatility,
                fieldId: measureId,
                value: cv,
                significant: cv,
                seriesName: series,
                info: {
                    cv: cv
                }
            });
        }));
    })), result;
};

export const Volatility = {
    name: "volatility",
    chartType: [ ChartType.LineChart, ChartType.DualAxisChart, ChartType.BarChart, ChartType.AreaChart ],
    insightType: InsightType.Volatility,
    algorithmFunction: volatilityAlgo,
    supportStack: !0,
    supportPercent: !1
};
//# sourceMappingURL=index.js.map