Pivot Chart (React)

The PivotChart is an extension of the FlexChart control. To use it, simple set the PivotChart.itemsSource property to an instance of a PivotEngine in order to connect the two components. The PivotChart below displays amounts by person and expense type.

Learn about OLAP | PivotChart Documentation | PivotChart API Reference

This example uses React.

import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import ReactDOM from 'react-dom/client'; import React, { useRef } from 'react'; import useEvent from 'react-use-event-hook'; import * as Olap from '@mescius/wijmo.react.olap'; import * as Input from '@mescius/wijmo.react.input'; import * as wjcOlap from '@mescius/wijmo.olap'; import '@mescius/wijmo.chart.render'; import './app.css'; import { data } from './data'; const ngChart = new wjcOlap.PivotEngine({ itemsSource: data, valueFields: ['Amount'], rowFields: ['Buyer', 'Type'], // by buyer and type }); function App() { const pivotChartRef = useRef(); const initializePivotChart = useEvent((pivotChart) => { pivotChartRef.current = pivotChart; pivotChartRef.current.engine.fields.getField('Amount').format = 'c0'; document.querySelector("#inputShowChartTitle").checked = true; }); const onChartTypeChanged = useEvent((combo) => { if (pivotChartRef.current) { pivotChartRef.current.chartType = wjcOlap.PivotChartType[combo.text]; } }); const onShowLegendOptionChanged = useEvent((combo) => { if (pivotChartRef.current) { pivotChartRef.current.showLegend = wjcOlap.LegendVisibility[combo.text]; } }); const onChartTitleClick = (e) => { pivotChartRef.current.showTitle = e.target.checked; }; const onExportClick = (e) => { if (e.target instanceof HTMLButtonElement) { pivotChartRef.current.saveImageToFile('FlexChart.' + e.target.textContent.trim()); } }; return (<div className="container-fluid"> <Olap.PivotChart showTitle={true} itemsSource={ngChart} initialized={initializePivotChart} showLegend="Auto"/> <label> Chart Type <Input.ComboBox textChanged={onChartTypeChanged} itemsSource={['Column', 'Bar', 'Line', 'Area', 'Pie']}/> <br /> </label> <br /> <label> Show Legend <Input.ComboBox textChanged={onShowLegendOptionChanged} itemsSource={['Auto', 'Always', 'Never']}/> </label> <br /> <label> Show Chart Title <input id="inputShowChartTitle" type="checkbox" onClick={onChartTitleClick}> </input> </label> <br /> <div onClick={onExportClick}> Export to <button className="btn btn-default">PNG</button> <button className="btn btn-default">JPEG</button> <button className="btn btn-default">SVG</button> </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 OLAP Pivot Chart Overview</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-pivotchart { margin: auto; max-width: 600px; } .wj-pivotchart .wj-flexchart { border: none; height: 300px; } .wj-combobox { margin-left: 10px; } #inputShowChartTitle { margin-left: 10px; vertical-align: middle; }
// list of country GDP and populations https://en.wikipedia.org/wiki/List_of_IMF_ranked_countries_by_GDP function getData() { var yr = new Date().getFullYear(); return [ { date: new Date(yr, 0, 1), buyer: 'Mom', type: 'Fuel', amount: 74 }, { date: new Date(yr, 0, 15), buyer: 'Mom', type: 'Food', amount: 235 }, { date: new Date(yr, 0, 17), buyer: 'Dad', type: 'Sports', amount: 20 }, { date: new Date(yr, 0, 21), buyer: 'Kelly', type: 'Books', amount: 125 }, { date: new Date(yr, 1, 2), buyer: 'Mom', type: 'Food', amount: 235 }, { date: new Date(yr, 1, 20), buyer: 'Kelly', type: 'Music', amount: 20 }, { date: new Date(yr, 1, 25), buyer: 'Kelly', type: 'Tickets', amount: 125 }, ]; } export const data = getData();
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