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Charts

Client-Side Data Processing

Documentation

The DevExtreme JavaScript UI components can get data from a remote storage and process it on the client. This demo shows the Chart component whose data source loads all data from a remote JSON file in one query. Afterwards, different filters are applied to this data depending on a value of the drop-down menu under the chart.

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import React from 'react'; import DataSource from 'devextreme/data/data_source'; import CustomStore from 'devextreme/data/custom_store'; import Chart, { ValueAxis, Label, Legend, Series, Size, Export, LoadingIndicator, } from 'devextreme-react/chart'; import SelectBox from 'devextreme-react/select-box'; class App extends React.Component { constructor(props) { super(props); this.temperature = [2, 4, 6, 8, 9, 10, 11]; this.palette = ['#c3a2cc', '#b7b5e0', '#e48cba']; this.paletteIndex = 0; this.monthWeather = new DataSource({ store: new CustomStore({ load: () => fetch('../../../../data/monthWeather.json') .then((e) => e.json()) .catch(() => { throw new Error('Data Loading Error'); }), loadMode: 'raw', }), filter: ['t', '>', '2'], paginate: false, }); this.customizePoint = () => { const color = this.palette[this.paletteIndex]; this.paletteIndex = this.paletteIndex === 2 ? 0 : this.paletteIndex + 1; return { color }; }; this.changeTemperature = (e) => { this.monthWeather.filter(['t', '>', e.value]); this.monthWeather.load(); }; } customizeLabel(e) { return `${e.valueText}${'&#176C'}`; } render() { return ( <div id="chart-demo"> <Chart title="Temperature in Seattle: October 2017" dataSource={this.monthWeather} customizePoint={this.customizePoint}> <Size height={420} /> <ValueAxis> <Label customizeText={this.customizeLabel} /> </ValueAxis> <Series argumentField="day" valueField="t" type="bar" /> <Legend visible={false} /> <Export enabled={true} /> <LoadingIndicator enabled={true} /> </Chart> <div className="action"> <div className="label">Choose a temperature threshold, &deg;C: </div> <SelectBox id="choose-temperature" dataSource={this.temperature} defaultValue={2} onValueChanged={this.changeTemperature} /> </div> </div> ); } } 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/21.2.3/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.2.3/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>
.action { width: 330px; margin-top: 20px; display: flex; align-items: center; justify-content: space-between; } .action .dx-selectbox { width: 90px; }
window.config = { transpiler: 'plugin-babel', meta: { 'devextreme/localization.js': { 'esModule': true, }, }, paths: { 'npm:': 'https://unpkg.com/', }, defaultExtension: 'js', map: { '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@15.7.2/prop-types.js', 'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js', 'luxon': 'npm:luxon@1.28.0/build/global/luxon.min.js', 'es6-object-assign': 'npm:es6-object-assign@1.1.0', 'devextreme': 'npm:devextreme@21.2.3/cjs', 'devextreme-react': 'npm:devextreme-react@21.2.3', 'jszip': 'npm:jszip@3.7.1/dist/jszip.min.js', 'devextreme-quill': 'npm:devextreme-quill@1.5.5/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.1.37/dist/dx-diagram.js', 'devexpress-gantt': 'npm:devexpress-gantt@3.1.24/dist/dx-gantt.js', '@devextreme/vdom': 'npm:@devextreme/vdom@2.2.3', '@devextreme/runtime': 'npm:@devextreme/runtime@2.3.8', 'inferno': 'npm:inferno@7.4.10/dist/inferno.min.js', 'inferno-compat': 'npm:inferno-compat@7.4.10/dist/inferno-compat.min.js', 'inferno-create-element': 'npm:inferno-create-element@7.4.10/dist/inferno-create-element.min.js', 'inferno-dom': 'npm:inferno-dom@1.0.7/dist/inferno-dom.min.js', 'inferno-hydrate': 'npm:inferno-hydrate@7.4.10/dist/inferno-hydrate.min.js', 'inferno-clone-vnode': 'npm:inferno-clone-vnode@7.4.10/dist/inferno-clone-vnode.min.js', 'inferno-create-class': 'npm:inferno-create-class@7.4.10/dist/inferno-create-class.min.js', 'inferno-extras': 'npm:inferno-extras@7.4.10/dist/inferno-extras.min.js', // 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', }, packages: { 'devextreme': { defaultExtension: 'js', }, '@devextreme/vdom': { defaultExtension: 'js', }, 'devextreme-react': { main: 'index.js', }, 'devextreme/events/utils': { main: 'index', }, 'devextreme/events': { main: 'index', }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js', }, }, packageConfigPaths: [ 'npm:@devextreme/*/package.json', 'npm:@devextreme/runtime@2.3.8/inferno/package.json', ], babelOptions: { sourceMaps: false, stage0: true, react: true, }, }; System.config(window.config);
[ { "day": "1", "t": 11 }, { "day": "2", "t": 7 }, { "day": "3", "t": 6 }, { "day": "4", "t": 8 }, { "day": "5", "t": 7 }, { "day": "6", "t": 7 }, { "day": "7", "t": 11 }, { "day": "8", "t": 9 }, { "day": "9", "t": 5 }, { "day": "10", "t": 8 }, { "day": "11", "t": 6 }, { "day": "12", "t": 9 }, { "day": "13", "t": 8 }, { "day": "14", "t": 6 }, { "day": "15", "t": 6 }, { "day": "16", "t": 6 }, { "day": "17", "t": 10 }, { "day": "18", "t": 9 }, { "day": "19", "t": 12 }, { "day": "20", "t": 9 }, { "day": "21", "t": 8 }, { "day": "22", "t": 13 }, { "day": "23", "t": 9 }, { "day": "24", "t": 7 }, { "day": "25", "t": 6 }, { "day": "26", "t": 11 }, { "day": "27", "t": 8 }, { "day": "28", "t": 7 }, { "day": "29", "t": 9 }, { "day": "30", "t": 7 }, { "day": "31", "t": 3 } ]