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Charts

Selection

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This demo illustrates the use of the pointClick callback function to implement selection in the Chart widget. The selectionMode of the series is set to «allArgumentPoints», which means that when a user selects a point, other points with the same argument also become selected.

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<template> <dx-chart id="chart" :data-source="exportData" :rotated="true" title="Economy - Export Change" @point-click="onPointClick" @legend-click="onLegendClick" > <dx-common-series-settings argument-field="country" type="bar" hover-mode="allArgumentPoints" selection-mode="allArgumentPoints" > <dx-label :visible="true"> <dx-format :precision="1" type="percent" /> </dx-label> </dx-common-series-settings> <dx-series value-field="year2007" name="2007 - 2008" /> <dx-series value-field="year2008" name="2008 - 2009" /> <dx-value-axis> <dx-label> <dx-format :precision="1" type="percent" /> </dx-label> </dx-value-axis> <dx-legend vertical-alignment="bottom" horizontal-alignment="center" /> <dx-export :enabled="true"/> </dx-chart> </template> <script> import DxChart, { DxCommonSeriesSettings, DxSeries, DxLabel, DxFormat, DxValueAxis, DxLegend, DxExport } from 'devextreme-vue/chart'; import { exportData } from './data.js'; export default { components: { DxChart, DxCommonSeriesSettings, DxSeries, DxLabel, DxFormat, DxValueAxis, DxLegend, DxExport }, data() { return { exportData }; }, methods: { onPointClick({ target: point }) { point.select(); }, onLegendClick({ target: series }) { if(series.isVisible()) { series.hide(); } else { series.show(); } } } }; </script> <style> #chart { height: 440px; } </style>
import Vue from 'vue'; import App from './App.vue'; new Vue({ el: '#app', components: { App }, template: '<App/>' });
<!DOCTYPE html> <html> <head> <title>DevExtreme Demo</title> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.4/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.4/css/dx.light.css" /> <script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script> <script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script> <script type="text/javascript" src="config.js"></script> <script type="text/javascript"> System.import('./index.js'); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"> </div> </div> </body> </html>
export const exportData = [{ country: 'China', year2007: 0.1732, year2008: -0.1588 }, { country: 'Germany', year2007: 0.0964, year2008: -0.2231 }, { country: 'United States', year2007: 0.1187, year2008: -0.1878 }, { country: 'Japan', year2007: 0.1081, year2008: -0.2614 }, { country: 'France', year2007: 0.1014, year2008: -0.2222 }, { country: 'Netherlands', year2007: 0.1355, year2008: -0.2015 }];
System.config({ transpiler: 'plugin-babel', paths: { 'npm:': 'https://unpkg.com/' }, map: { vue: 'npm:vue@2.6.3/dist/vue.esm.browser.js', 'vue-loader': 'npm:dx-systemjs-vue-browser@latest/index.js', 'devextreme': 'npm:devextreme@19.2', 'devextreme-vue': 'npm:devextreme-vue@19.2', jszip: 'npm:jszip@3.1.3/dist/jszip.min.js', 'quill': 'npm:quill@1.3.7/dist/quill.js', 'devexpress-diagram': 'npm:devexpress-diagram', 'devexpress-gantt': 'npm:devexpress-gantt', 'plugin-babel': 'npm:systemjs-plugin-babel@0/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0/systemjs-babel-browser.js' }, meta: { '*.vue': { loader: 'vue-loader' } }, packages: { 'devextreme-vue': { main: 'index.js' }, 'devextreme': { defaultExtension: 'js' } }, babelOptions: { sourceMaps: false, stage0: true } });