Palettes

The FlexChart control automatically picks colors for each series based on a default palette, which you can override by setting the palette property.

Learn about FlexChart | Styling Series Documentation | FlexChart API Reference

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; import * as wj from '@grapecity/wijmo'; import { FlexChart, FlexPie, Palettes } from '@grapecity/wijmo.chart'; import * as wjInput from '@grapecity/wijmo.input'; import { getData } from './data'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // create the chart let theChart = new FlexChart('#theChart', { header: 'Country GDP', footer: '2016, in USD billions', itemsSource: getData(), tooltip: { content: '<b>{country}</b><br>{value}' }, bindingX: 'country', series: [ { binding: '2016' } ], itemFormatter: (engine, ht, defaultRenderer) => { const pal = theChart.palette ? theChart.palette : Palettes.standard; engine.fill = pal[ht.pointIndex]; // each bar has own color engine.stroke = null; defaultRenderer(); } }); // let thePie = new FlexPie('#thePie', { header: 'Country GDP', footer: '2016, in USD billions', itemsSource: getData(), bindingName: 'country', binding: '2016', itemFormatter: (engine, ht, defaultRenderer) => { let clr = new wj.Color(engine.fill); clr.a = 1; // use opaque color engine.fill = clr.toString(); engine.stroke = null; defaultRenderer(); } }); // select the chart palette let thePalette = new wjInput.ComboBox('#thePalette', { itemsSource: getPalettes(), displayMemberPath: 'name', showGroups: true, selectedIndexChanged: (s) => theChart.palette = thePie.palette = s.selectedItem.colors, formatItem: (sender, e) => { let item = e.data; if (item.name && item.colors) { // create palette swatch let html = '<div style="width:100px;display:inline-block">' + item.name + '</div>'; item.colors.forEach(clr => { html += `<div style="width:1em;height:1em;display:inline-block;background-color:${clr};"></div>`; }); e.item.innerHTML = html; } } }); } // function getPalettes() { let items = []; let palettes = Palettes; for (let key in palettes) { if (!palettes.hasOwnProperty(key)) { continue; } if (Array.isArray(palettes[key])) { items.push({ name: key, colors: palettes[key] }); } else { for (let subkey in palettes[key]) { if (palettes[key].hasOwnProperty(subkey)) { items.push({ name: subkey, colors: palettes[key][subkey], group: key }); } } } } return new wj.CollectionView(items, { groupDescriptions: ['group'] }); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexChart Palettes</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 class="row"> <label for="#thePalette">Please select a Palette:</label> <div id="thePalette"></div> </div> <div class="row"> <div class="col"> <div id="theChart"></div> </div> <div class="col"> <div id="thePie"></div> </div> </div> </div> </body> </html>
// list of country GDP // https://en.wikipedia.org/wiki/List_of_IMF_ranked_countries_by_GDP export function getData() { return [ { country: 'United States', '2014': 17348075, '2015': 18036650, '2016': 18624450 }, { country: 'China', '2014': 10356508, '2015': 11181556, '2016': 11232110 }, { country: 'Japan', '2014': 4602367, '2015': 4124211, '2016': 4936540 }, { country: 'Germany', '2014': 3874437, '2015': 3365293, '2016': 3479230 }, { country: 'United Kingdom', '2014': 2950039, '2015': 2858482, '2016': 2629190 }, { country: 'France', '2014': 2833687, '2015': 2420163, '2016': 2466470 }, { country: 'India', '2014': 2051228, '2015': 2073002, '2016': 2263790 }, { country: 'Italy', '2014': 2147744, '2015': 1815759, '2016': 1850740 } ]; }
label { margin-right: 3px; margin-left: 12px; } .row { margin-top: 0.5em; margin-bottom: 0.5em; } .col { float:left; width: 50%; } .wj-flexchart { margin: 12px; height: 360px; }
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