Multiple Plot Areas

Stacking FlexChart controls is an alternative to creating a single chart with multiple plot areas. Use the plotMargin property to ensure the charts line up properly.

For example, these two charts are stacked vertically have their Y axes aligned by setting both plotMargin properties to have '120' as the left value.

Learn about FlexChart | Multiple Plot Areas Documentation | FlexChart API Reference

import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import './styles.css'; import { isArray } from '@mescius/wijmo'; import { FlexChart, Axis, Palettes, PlotArea, Position } from '@mescius/wijmo.chart'; import { getData } from './data'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // create the chart for showing amounts let theChart = new FlexChart('#theChart', { itemsSource: getData(), header: 'Sales, Expenses, and Downloads', bindingX: 'country', series: [ { binding: 'sales', name: 'Sales' }, { binding: 'expenses', name: 'Expenses' }, { binding: 'downloads', name: 'Downloads', chartType: 'LineSymbols' } ], }); theChart.palette = getRandomPalette(); //// create a plot area for amounts var p = new PlotArea(); p.row = theChart.plotAreas.length; p.name = 'amounts'; p.height = '2*'; theChart.plotAreas.push(p); // create a spacer plot area p = new PlotArea(); p.row = theChart.plotAreas.length; p.name = 'spacer'; p.height = 25; theChart.plotAreas.push(p); // create a plot area for quantities p = new PlotArea(); p.row = theChart.plotAreas.length; p.name = 'quantities'; p.height = '*'; var axisYQty = new Axis(Position.Left); axisYQty.plotArea = p; theChart.series[2].axisY = axisYQty; theChart.plotAreas.push(p); } // function getRandomPalette() { let palettes = Object.keys(Palettes).filter(prop => isArray(Palettes[prop])); let rand = Math.floor(Math.random() * palettes.length); // return Palettes[palettes[rand]]; }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexChart Multiple Plot Areas</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.21.5/system.src.js" integrity="sha512-skZbMyvYdNoZfLmiGn5ii6KmklM82rYX2uWctBhzaXPxJgiv4XBwJnFGr5k8s+6tE1pcR1nuTKghozJHyzMcoA==" crossorigin="anonymous"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div class="container-fluid"> <div class="chart-holder"> <div id="theChart"></div> </div> </div> </body> </html>
// create some random data export function getData() { let countries = 'US,Germany,UK,Japan,Italy,Greece'.split(','), data = []; // for (let i = 0; i < countries.length; i++) { data.push({ country: countries[i], sales: Math.random() * 10000, expenses: Math.random() * 5000, downloads: Math.round(Math.random() * 20000) }); } // return data; }
.chart-holder { padding: 15px 10px; margin-bottom: 12px; border: 1px solid rgba(0,0,0,0.2); border-radius: 4px; } .wj-flexchart { border: none; padding: 0; margin: 0; } body { margin-bottom: 24pt; }
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