Moving Average (React)

The MovingAverage class extends the regular Series class to provide a series of averages of different subsets of the full data set.

To add moving averages to a chart, follow these steps:

  1. Create one or more MovingAverage series,
  2. Configure the MovingAverage series as you would regular series, setting their binding, chartType, and style properties for example, and
  3. Set the MovingAverage's type and period properties to determine the type of moving average you want to create.

Learn about FlexChart | Moving Average Documentation | FlexChart API Reference

This example uses React.

import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import ReactDOM from 'react-dom/client'; import React, { useState } from 'react'; import useEvent from 'react-use-event-hook'; import * as wjChart from '@mescius/wijmo.react.chart'; import * as wjChartAnalysis from '@mescius/wijmo.react.chart.analytics'; import * as wjInput from '@mescius/wijmo.react.input'; import './app.css'; import { data, typeData } from './data'; function App() { const [type, setType] = useState('Simple'); const [period, setPeriod] = useState(6); const typeChanged = useEvent((combo) => { setType(combo.text); }); const periodChanged = useEvent((input) => { if (input.value < input.min || input.value > input.max) { return; } setPeriod(input.value); }); return (<div className="container-fluid"> <div className="form-group"> <label>MovingAverage Type: </label> <wjInput.ComboBox text={type} itemsSource={typeData} textChanged={typeChanged}/> <label>Period: </label> <wjInput.InputNumber value={period} step={1} min={2} max={20} valueChanged={periodChanged}/> <wjChart.FlexChart itemsSource={data} bindingX="date" chartType="Line"> <wjChart.FlexChartAxis wjProperty="axisY" min={0}/> <wjChart.FlexChartSeries name="Sales" binding="sales"/> <wjChartAnalysis.FlexChartMovingAverage name="Moving Average" itemsSource={data} binding="sales" period={period} style={{ stroke: 'darkred', strokeWidth: 3 }} type={type}/> </wjChart.FlexChart> </div> </div>); } const container = document.getElementById('app'); if (container) { const root = ReactDOM.createRoot(container); root.render(<App />); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo Wijmo FlexChart Moving Average</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.40/system.src.js" integrity="sha512-G6mEj6h18+m3MvzdviSDfPle/TfH0//cXcB33AKlNR/Rha0yQsKefDZKRTkIZos97HEGq2JMV1RT5ybMoQ3WsQ==" crossorigin="anonymous"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div id="app"></div> </body> </html>
label { margin-right: 3px; }
import * as wjCore from '@mescius/wijmo'; function getData() { let arr = [], today = new Date(), sales = 1000; // for (let i = 100; i >= 0; i--) { arr.push({ date: wjCore.DateTime.addDays(today, -i), sales: sales }); // sales += Math.round(Math.random() * 300 - 130); } // return arr; } export const typeData = ['Simple', 'Weighted', 'Exponential', 'Triangular']; export const data = getData();
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