Point Image

Documentation

This demo shows that the Chart can display custom images instead of standard point symbols.

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Backend API

import React from 'react'; import { Chart, CommonSeriesSettings, Series, ArgumentAxis, Grid, Label, Format, ValueAxis, Export, Legend, Point, } from 'devextreme-react/chart'; import { iceHockeyStatistics } from './data.js'; const exportFormats = ['PNG', 'PDF', 'JPEG', 'GIF', 'SVG']; class App extends React.Component { render() { return ( <Chart id="chart" dataSource={iceHockeyStatistics} title={'Canadian Men’s National Ice Hockey Team\n at the World Championships'} customizePoint={this.customizePoint} > <CommonSeriesSettings argumentField="year" valueField="place" type="spline" > <Point visible={false} /> </CommonSeriesSettings> <Series color="#888888" /> <ArgumentAxis allowDecimals={false} axisDivisionFactor={60} > <Grid visible={true} /> <Label> <Format type="decimal" /> </Label> </ArgumentAxis> <ValueAxis inverted={true}> <Grid visible={false} /> <Label customizeText={this.customizeText} /> </ValueAxis> <Export enabled={true} formats={exportFormats} /> <Legend visible={false} /> </Chart> ); } customizePoint() { if (this.value === 1) { return { image: { url: '../../../../images/Charts/PointImage/icon-medal-gold.png', width: 20, height: 20 }, visible: true }; } if (this.value === 2) { return { image: { url: '../../../../images/Charts/PointImage/icon-medal-silver.png', width: 20, height: 20 }, visible: true }; } if (this.value === 3) { return { image: { url: '../../../../images/Charts/PointImage/icon-medal-bronse.png', width: 20, height: 20 }, visible: true }; } return null; } customizeText() { if (this.valueText === '1') { return `${this.valueText}st place`; } if (this.valueText === '2') { return `${this.valueText}nd place`; } if (this.valueText === '3') { return `${this.valueText}rd place`; } return `${this.valueText}th place`; } } export default App;

import React from 'react'; import ReactDOM from 'react-dom'; import App from './App.js'; ReactDOM.render( <App />, document.getElementById('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/23.1.5/css/dx.light.css" /> <link rel="stylesheet" type="text/css" href="styles.css" /> <script src="https://unpkg.com/core-js@2.6.12/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>

#chart { height: 440px; }

export const iceHockeyStatistics = [{ year: 1977, place: 4, }, { year: 1978, place: 3, }, { year: 1979, place: 4, }, { year: 1981, place: 4, }, { year: 1982, place: 3, }, { year: 1983, place: 3, }, { year: 1985, place: 2, }, { year: 1986, place: 3, }, { year: 1987, place: 4, }, { year: 1989, place: 2, }, { year: 1990, place: 4, }, { year: 1991, place: 2, }, { year: 1992, place: 8, }, { year: 1993, place: 4, }, { year: 1994, place: 1, }, { year: 1995, place: 3, }, { year: 1996, place: 2, }, { year: 1997, place: 1, }, { year: 1998, place: 6, }, { year: 1999, place: 4, }, { year: 2000, place: 4, }, { year: 2001, place: 5, }, { year: 2002, place: 6, }, { year: 2003, place: 1, }, { year: 2004, place: 1, }, { year: 2005, place: 2, }, { year: 2006, place: 4, }, { year: 2007, place: 1, }, { year: 2008, place: 2, }, { year: 2009, place: 2, }, { year: 2010, place: 7, }, { year: 2011, place: 5, }, { year: 2012, place: 5, }, { year: 2013, place: 5, }];