Pivot Chart

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.

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; import * as wjOlap from '@grapecity/wijmo.olap'; import * as wjInput from '@grapecity/wijmo.input'; import '@grapecity/wijmo.chart.render'; import { getData } from './data'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // // initialize pivot engine var ngChart = new wjOlap.PivotEngine({ itemsSource: getData(), valueFields: ['Amount'], rowFields: ['Buyer', 'Type'], }); ngChart.fields.getField('Amount').format = 'c0'; // customize field // // show the chart var pivotChart = new wjOlap.PivotChart('#pivotChart', { itemsSource: ngChart, showTitle: true, showLegend: 'Auto' }); // // allow users to customize the chart type var cmbChartType = new wjInput.ComboBox('#chartType', { textChanged: function (s, e) { pivotChart.chartType = s.text; }, itemsSource: 'Column,Bar,Line,Area,Pie'.split(',') }); // // allow users to customize the chart legend var cmbShowLegend = new wjInput.ComboBox('#showLegend', { textChanged: function (s, e) { pivotChart.showLegend = s.text; }, itemsSource: 'Auto,Always,Never'.split(',') }); // // // toggle chart title document.getElementById('chartTitle').addEventListener('click', function (e) { pivotChart.showTitle = e.target.checked; }); // // export the chart to an image document.getElementById('export').addEventListener('click', function (e) { if (e.target instanceof HTMLButtonElement) { var ext = e.target.textContent.trim(); pivotChart.saveImageToFile('FlexChart.' + ext); } }); // }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>Grapecity Wijmo OLAP Pivot Chart Overview</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div class="container-fluid"> <div id="pivotChart"></div> <label> Chart Type <input id="chartType"> </label> <br/> <label> Show Legend <input id="showLegend"> </label> <br/> <label> Show Chart Title <input id="chartTitle" type="checkbox" checked="checked"> </label> <div id="export"> Export to <button class="btn btn-default">PNG</button> <button class="btn btn-default">JPEG</button> <button class="btn btn-default">SVG</button> </div> </div> </body> </html>
// get the raw data export 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 }, ]; }
.wj-pivotchart { margin: auto; max-width: 600px; } .wj-pivotchart .wj-flexchart { border: none; height: 300px; } body { margin-bottom: 48pt; }
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