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Range Selector

Logarithmic Scale

Documentation

In this demo, a logarithmic axis is used to select a range within a set of rapidly-growing values.

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import React from 'react'; import RangeSelector, { Chart as RsChart, Series as RsSeries, Scale, Label as RsLabel, SliderMarker, Behavior } from 'devextreme-react/range-selector'; import Chart, { ArgumentAxis, Legend, Series, Label, Grid, MinorGrid } from 'devextreme-react/chart'; import { dataSource } from './data.js'; class App extends React.Component { constructor(props) { super(props); this.state = { range: [] }; this.updateRange = this.updateRange.bind(this); } render() { return ( <React.Fragment> <Chart id="zoomed-chart" dataSource={dataSource} resizePanesOnZoom={true} > <Series /> <ArgumentAxis visualRange={this.state.range} valueMarginsEnabled={false} minorTickCount={10} type="logarithmic" > <Label format="exponential" /> <Grid visible={true} /> <MinorGrid visible={true} /> </ArgumentAxis> <Legend visible={false} /> </Chart> <RangeSelector id="range-selector" dataSource={dataSource} onValueChanged={this.updateRange} > <RsChart> <RsSeries /> </RsChart> <Scale minRange={1} minorTickCount={10} type="logarithmic"> <RsLabel format="exponential" /> </Scale> <SliderMarker format="exponential" /> <Behavior snapToTicks={false} callValueChanged="onMoving" /> </RangeSelector> </React.Fragment> ); } updateRange(data) { this.setState({ range: data.value }); } } 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="dx-theme" data-theme="generic.light" 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>
#zoomed-chart{ height: 335px; margin: 0 0 15px; } #range-selector { height: 120px; }
const data = []; for (var i = 0; i < 100; i++) { data.push({ arg: Math.pow(10, i * 0.1), val: Math.log(i + 1) / Math.log(0.5) + (Math.random() - 0.5) * (100 / (i + 1)) + 10 }); } export const dataSource = data;
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 } });