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Charts

Discrete Axis Zooming and Scrolling

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Discrete data support is one of many strengths of the Chart widget. In this example, you can zoom data in the Chart using another DevExtreme HTML5 widget, the RangeSelector.

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import React from 'react'; import { series, dataSource } from './data.js'; import Chart, { ValueAxis, Label, Legend, ArgumentAxis, CommonSeriesSettings, Border, Series } from 'devextreme-react/chart'; import RangeSelector, { Size, Chart as ChartOptions, Margin, Scale, Behavior, CommonSeriesSettings as CommonSeriesSettingsOptions, Series as RsChartSeries } from 'devextreme-react/range-selector'; const seriesList = series.map(item => <Series valueField={item.valueField} name={item.name} key={item.name} /> ); const rsChartSeriesList = series.map(item => <RsChartSeries valueField={item.valueField} name={item.name} key={item.name} /> ); class App extends React.Component { constructor(props) { super(props); this.state = { visualRange: { startValue: 'Inner Core', endValue: 'Upper Crust' } }; this.updateVisualRange = this.updateVisualRange.bind(this); } render() { return ( <React.Fragment> <Chart id="zoomedChart" palette="Soft" title="The Chemical Composition of the Earth Layers" dataSource={dataSource} > {seriesList} <ValueAxis> <Label customizeText={formatValueAxisLabel} /> </ValueAxis> <ArgumentAxis visualRange={this.state.visualRange} /> <CommonSeriesSettings type="bar" ignoreEmptyPoints={true} /> <Legend visible={true} verticalAlignment="top" horizontalAlignment="right" orientation="horizontal" > <Border visible={true} /> </Legend> </Chart> <RangeSelector dataSource={dataSource} onValueChanged={this.updateVisualRange } > <Size height={120} /> <Margin left={10} /> <Scale minorTickCount={1} startValue="Inner Core" endValue="Upper Crust" /> <Behavior callValueChanged="onMoving" /> <ChartOptions palette="Soft"> {rsChartSeriesList} <Legend visible={false} /> <CommonSeriesSettingsOptions type="bar" ignoreEmptyPoints ={true} /> </ChartOptions> </RangeSelector> </React.Fragment> ); } updateVisualRange(e) { this.setState({ visualRange: e.value }); } } function formatValueAxisLabel() { return `${this.valueText}%`; } 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/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" /> <link rel="stylesheet" type="text/css" href="styles.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>
#zoomedChart { margin-bottom: 20px; }
var series = [{ name: 'Si', valueField: 'Si' }, { name: 'Fe', valueField: 'Fe' }, { name: 'Ni', valueField: 'Ni' }, { name: 'S', valueField: 'S' }, { name: 'O', valueField: 'O' }, { name: 'Mg', valueField: 'Mg' }, { name: 'Al', valueField: 'Al' }, { name: 'K', valueField: 'K' }, { name: 'Na', valueField: 'Na' }]; var dataSource = [{ arg: 'Inner Core', Si: 7.35, Fe: 79.39, Ni: 5.2, S: 2.3, O: 4.1 }, { arg: 'Outer Core', Si: 7.33, Fe: 78.56, Ni: 5.2, S: 2.7, O: 4.2 }, { arg: 'Lower Mantle', Si: 21.5, Fe: 5.8, O: 44.8, Mg: 22.8, Al: 2.2, Ca: 2.3, Na: 0.3, K: 0.03 }, { arg: 'Upper Mantle', Si: 28.1, Mg: 23.2, Fe: 4.3, Al: 1.2, Ca: 2.2, O: 40.3, Na: 0.2 }, { arg: 'Lower Crust', O: 46.6, Si: 27.7, Al: 8.1, Fe: 5, Ca: 3.6, Na: 2.8, K: 2.6, Mg: 1.5 }, { arg: 'Upper Crust', O: 47, Si: 29.5, Al: 8.05, Fe: 4.66, Ca: 2.96, Na: 2.5, K: 2.5, Mg: 1.87 }]; export { series, dataSource };
System.config({ transpiler: 'plugin-babel', paths: { 'npm:': 'https://unpkg.com/' }, defaultExtension: 'js', map: { 'react': 'npm:react@16/umd/react.development.js', 'react-dom': 'npm:react-dom@16/umd/react-dom.development.js', 'prop-types': 'npm:prop-types/prop-types.js', 'devextreme': 'npm:devextreme@19.2', 'devextreme-react': 'npm:devextreme-react@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', // SystemJS plugins 'plugin-babel': 'npm:systemjs-plugin-babel@0/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0/systemjs-babel-browser.js' }, packages: { 'devextreme': { defaultExtension: 'js' }, 'devextreme-react': { main: 'index.js' } }, babelOptions: { sourceMaps: false, stage0: true, react: true } });