Pareto (React)

Pareto charts, named after Vilfredo Pareto, contain both bars and a line graph, where individual values are represented in descending order by bars, and the cumulative total is represented by the line.

The left vertical axis may contain the frequency of occurrence, cost or any another important unit of measure. The right vertical axis is the cumulative percentage of the total number of occurrences, cost, or total of the particular unit of measure.

Pareto charts help identify the items that account for most of the occurrences so they can be prioritized.

Learn about FlexChart | FlexChart API Reference

This example uses React.

import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import ReactDOM from 'react-dom/client'; import React from 'react'; import * as wjChart from '@mescius/wijmo.react.chart'; import './app.css'; import { data, palette } from './data'; function App() { const updateData = () => { data.deferUpdate(() => { data.items.forEach((item) => { item.sales += (Math.random() - .5) * .5 * item.sales; }); }); }; return (<div className="container-fluid"> <div className="form-group"> <button id="btnUpdate" className="btn btn-default" onClick={updateData}>Update</button> </div> <wjChart.FlexChart itemsSource={data} palette={palette} chartType="Column" binding="make"> <wjChart.FlexChartAxis wjProperty="axisY" format="n0" title="Sales (thousands)" axisLine={true}> </wjChart.FlexChartAxis> <wjChart.FlexChartAxis wjProperty="axisX" labelAngle={-90}/> <wjChart.FlexChartLegend position="None"/> <wjChart.FlexChartSeries binding="sales" name="Sales (thousands)"/> <wjChart.FlexChartSeries binding="cumSales" name="Cumulative Sales" chartType="Line" style={{ 'stroke': 'orange', 'strokeWidth': 4 }}> <wjChart.FlexChartAxis wjProperty="axisY" position="Right" title="Cumulative Sales" format="p0" min={0} axisLine={true}> </wjChart.FlexChartAxis> </wjChart.FlexChartSeries> </wjChart.FlexChart> </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 Pareto</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>
.wj-flexchart { margin: 0 auto; border: none; }
import { isArray } from '@mescius/wijmo'; import { Palettes } from '@mescius/wijmo.chart'; import * as wijmo from '@mescius/wijmo'; function getData() { // some raw data let data = [ { make: 'Vokswagen', sales: 2532435 }, { make: 'Toyota', sales: 2338453 }, { make: 'Renault-Nissan', sales: 2336543 }, { make: 'GM', sales: 2252543 }, { make: 'Hyundai-Kia', sales: 1553547 }, { make: 'Ford', sales: 1521153 }, { make: 'Suzuki', sales: 739123 }, { make: 'PSA', sales: 682121 }, { make: 'Daimler', sales: 440234 }, { make: 'BMW Group', sales: 586121 }, { make: 'Geely', sales: 410353 }, { make: 'Mazda', sales: 389243 }, { make: 'Chang\'an', sales: 389323 }, { make: 'Subaru', sales: 230221 }, { make: 'Tata Group', sales: 242123 } ]; // // created sorted view let view = new wijmo.CollectionView(data); view.sortDescriptions.push(new wijmo.SortDescription('sales', false)); // // add cumulative sales _updateCumSales(view); // // update cumulative sales when the data changes view.collectionChanged.addHandler(() => _updateCumSales(view)); // // done return view; } function getPalette() { // Get random palette let palettes = Object.keys(Palettes).filter(prop => isArray(Palettes[prop])); let rand = Math.floor(Math.random() * palettes.length); // return Palettes[palettes[rand]]; } function _updateCumSales(view) { let totalSales = view.getAggregate(wijmo.Aggregate.Sum, 'sales'), cumSales = 0; // view.items.forEach((item) => { cumSales += item.sales; item.cumSales = cumSales / totalSales; }); } export const data = getData(); export const palette = getPalette();
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