チャート:系列の表示切り替え

ユーザーがチャートの凡例をクリックしたときに系列の表示を切り替えるには、グラフのlegendToggleプロパティをtrueに設定します。

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; import * as wjChart from '@grapecity/wijmo.chart'; import { getData } from './data'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // create a chart let theChart = new wjChart.FlexChart('#theChart', { legendToggle: true, itemsSource: getData(), bindingX: 'country', series: [ { binding: '2014', name: '2014' }, { binding: '2015', name: '2015' }, { binding: '2016', name: '2016' } ] }); theChart.palette = getRandomPalette(); // // change legendToggle document.querySelector('#legendToggle').addEventListener('click', e => { theChart.legendToggle = e.target.checked; }); } // function getRandomPalette() { let palettes = Object.getOwnPropertyNames(wjChart.Palettes) .filter(prop => typeof wjChart.Palettes[prop] === "object" && prop !== 'prototype'); let rand = Math.floor(Math.random() * palettes.length); // return wjChart.Palettes[palettes[rand]]; }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo FlexChart Legend Series Toggle</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"> <label for="legendToggle">系列の表示切り替え: </label> <input id="legendToggle" type="checkbox" checked="checked"> <div id="theChart"></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: 'アメリカ', '2014': 17348075, '2015': 18036650, '2016': 18624450 }, { country: '中国', '2014': 10356508, '2015': 11181556, '2016': 11232110 }, { country: '日本', '2014': 4602367, '2015': 4124211, '2016': 4936540 }, { country: 'ドイツ', '2014': 3874437, '2015': 3365293, '2016': 3479230 }, { country: 'イギリス', '2014': 2950039, '2015': 2858482, '2016': 2629190 }, { country: 'フランス', '2014': 2833687, '2015': 2420163, '2016': 2466470 }, { country: 'インド', '2014': 2051228, '2015': 2073002, '2016': 2263790 }, { country: 'イタリア', '2014': 2147744, '2015': 1815759, '2016': 1850740 } ]; }
label { width: 150px; text-align: right; } .wj-control { margin-bottom: 3px; }
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