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React Charts - Crosshair

In this example, the crosshair pointer is enabled and a custom style is applied to it. The crosshair pointer allows a user to determine the argument and the value of a specific point more precisely.

Backend API
import React from 'react'; import { Chart, CommonSeriesSettings, Series, ArgumentAxis, Grid, Crosshair, Export, Legend, Point, Label, Font, Title, Subtitle, Tooltip, } from 'devextreme-react/chart'; import { energySources, countriesInfo } from './data.ts'; function App() { return ( <Chart id="chart" dataSource={countriesInfo} > <CommonSeriesSettings type="spline" argumentField="country" > <Point hoverMode="allArgumentPoints" /> </CommonSeriesSettings> { energySources.map((item) => <Series key={item.value} valueField={item.value} name={item.name} />) } <ArgumentAxis valueMarginsEnabled={false} discreteAxisDivisionMode="crossLabels" > <Grid visible={true} /> </ArgumentAxis> <Crosshair enabled={true} color="#949494" width={3} dashStyle="dot" > <Label visible={true} backgroundColor="#949494" > <Font color="#fff" size={12} /> </Label> </Crosshair> <Legend verticalAlignment="bottom" horizontalAlignment="center" itemTextPosition="bottom" /> <Title text="Energy Consumption in 2004"> <Subtitle text="(Millions of Tons, Oil Equivalent)" /> </Title> <Export enabled={true} /> <Tooltip enabled={true} /> </Chart> ); } export default App;
import React from 'react'; import { Chart, CommonSeriesSettings, Series, ArgumentAxis, Grid, Crosshair, Export, Legend, Point, Label, Font, Title, Subtitle, Tooltip, } from 'devextreme-react/chart'; import { energySources, countriesInfo } from './data.js'; function App() { return ( <Chart id="chart" dataSource={countriesInfo} > <CommonSeriesSettings type="spline" argumentField="country" > <Point hoverMode="allArgumentPoints" /> </CommonSeriesSettings> {energySources.map((item) => ( <Series key={item.value} valueField={item.value} name={item.name} /> ))} <ArgumentAxis valueMarginsEnabled={false} discreteAxisDivisionMode="crossLabels" > <Grid visible={true} /> </ArgumentAxis> <Crosshair enabled={true} color="#949494" width={3} dashStyle="dot" > <Label visible={true} backgroundColor="#949494" > <Font color="#fff" size={12} /> </Label> </Crosshair> <Legend verticalAlignment="bottom" horizontalAlignment="center" itemTextPosition="bottom" /> <Title text="Energy Consumption in 2004"> <Subtitle text="(Millions of Tons, Oil Equivalent)" /> </Title> <Export enabled={true} /> <Tooltip enabled={true} /> </Chart> ); } export default App;
import React from 'react'; import ReactDOM from 'react-dom'; import App from './App.tsx'; ReactDOM.render( <App />, document.getElementById('app'), );
export const energySources = [ { value: 'hydro', name: 'Hydro-electric' }, { value: 'oil', name: 'Oil' }, { value: 'gas', name: 'Natural gas' }, { value: 'coal', name: 'Coal' }, { value: 'nuclear', name: 'Nuclear' }, ]; export const countriesInfo = [{ country: 'USA', hydro: 60.2, oil: 974.7, gas: 550.5, coal: 568.9, nuclear: 203.7, }, { country: 'China', hydro: 77.8, oil: 304.5, gas: 35, coal: 899, nuclear: 10.8, }, { country: 'Russia', hydro: 38.5, oil: 127.2, gas: 349.5, coal: 97.2, nuclear: 30.5, }, { country: 'Japan', hydro: 23.8, oil: 227.4, gas: 63.2, coal: 118.6, nuclear: 59.7, }, { country: 'India', hydro: 18.7, oil: 115.7, gas: 30.6, coal: 187, nuclear: 3.5, }, { country: 'Germany', hydro: 6.7, oil: 120.5, gas: 83.4, coal: 86.6, nuclear: 35.7, }];
window.exports = window.exports || {}; window.config = { transpiler: 'ts', typescriptOptions: { module: 'system', emitDecoratorMetadata: true, experimentalDecorators: true, jsx: 'react', }, meta: { 'react': { 'esModule': true, }, 'typescript': { 'exports': 'ts', }, 'devextreme/time_zone_utils.js': { 'esModule': true, }, 'devextreme/localization.js': { 'esModule': true, }, 'devextreme/viz/palette.js': { 'esModule': true, }, }, paths: { 'npm:': 'https://unpkg.com/', }, defaultExtension: 'js', map: { 'ts': 'npm:plugin-typescript@4.2.4/lib/plugin.js', 'typescript': 'npm:typescript@4.2.4/lib/typescript.js', 'react': 'npm:react@17.0.2/umd/react.development.js', 'react-dom': 'npm:react-dom@17.0.2/umd/react-dom.development.js', 'prop-types': 'npm:prop-types@15.8.1/prop-types.js', 'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js', 'luxon': 'npm:luxon@1.28.1/build/global/luxon.min.js', 'es6-object-assign': 'npm:es6-object-assign@1.1.0', 'devextreme': 'npm:devextreme@24.1.6/cjs', 'devextreme-react': 'npm:devextreme-react@24.1.6/cjs', 'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js', 'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.2.11/dist/dx-diagram.js', 'devexpress-gantt': 'npm:devexpress-gantt@4.1.56/dist/dx-gantt.js', '@devextreme/runtime': 'npm:@devextreme/runtime@3.0.13', 'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js', 'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js', 'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js', 'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js', 'inferno-hydrate': 'npm:inferno-hydrate@7.4.11/dist/inferno-hydrate.min.js', 'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js', 'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js', 'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js', 'devextreme-cldr-data': 'npm:devextreme-cldr-data@1.0.3', // SystemJS plugins 'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js', // Prettier 'prettier/standalone': 'npm:prettier@2.8.8/standalone.js', 'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js', }, packages: { 'devextreme': { defaultExtension: 'js', }, 'devextreme-react': { main: 'index.js', }, 'devextreme/events/utils': { main: 'index', }, 'devextreme/localization/messages': { format: 'json', defaultExtension: 'json', }, 'devextreme/events': { main: 'index', }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js', }, }, packageConfigPaths: [ 'npm:@devextreme/*/package.json', 'npm:@devextreme/runtime@3.0.13/inferno/package.json', ], babelOptions: { sourceMaps: false, stage0: true, react: true, }, }; System.config(window.config);
import React from 'react'; import ReactDOM from 'react-dom'; import App from './App.js'; ReactDOM.render(<App />, document.getElementById('app'));
export const energySources = [ { value: 'hydro', name: 'Hydro-electric' }, { value: 'oil', name: 'Oil' }, { value: 'gas', name: 'Natural gas' }, { value: 'coal', name: 'Coal' }, { value: 'nuclear', name: 'Nuclear' }, ]; export const countriesInfo = [ { country: 'USA', hydro: 60.2, oil: 974.7, gas: 550.5, coal: 568.9, nuclear: 203.7, }, { country: 'China', hydro: 77.8, oil: 304.5, gas: 35, coal: 899, nuclear: 10.8, }, { country: 'Russia', hydro: 38.5, oil: 127.2, gas: 349.5, coal: 97.2, nuclear: 30.5, }, { country: 'Japan', hydro: 23.8, oil: 227.4, gas: 63.2, coal: 118.6, nuclear: 59.7, }, { country: 'India', hydro: 18.7, oil: 115.7, gas: 30.6, coal: 187, nuclear: 3.5, }, { country: 'Germany', hydro: 6.7, oil: 120.5, gas: 83.4, coal: 86.6, nuclear: 35.7, }, ];
<!DOCTYPE html> <html lang="en"> <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=5.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.1.6/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.tsx"); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"></div> </div> </body> </html>
#chart { height: 440px; }