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Polar Chart Zooming and Panning API

To zoom a PolarChart into a specific range on the value axis, specify the PolarChart's visualRange property.

In this demo, this property is bound to the RangeSelector's value. When you move the sliders in the RangeSelector, you change the visualRange and zoom the PolarChart.

Once you set the zoom level, move the selected range left and right to scroll through data.

Backend API
import React, { useCallback, useState } from 'react'; import PolarChart, { CommonSeriesSettings, Series, Point, ArgumentAxis, ValueAxis, Export, Legend, } from 'devextreme-react/polar-chart'; import RangeSelector, { Size, Margin, Scale, MinorTick, Behavior, RangeSelectorTypes, } from 'devextreme-react/range-selector'; import { VisualRange } from 'devextreme-react/common/charts'; import { dataSource } from './data.ts'; function App() { const [visualRange, setVisualRange] = useState<VisualRange>({ startValue: 0, endValue: 8 }); const updateVisualRange = useCallback((e: RangeSelectorTypes.ValueChangedEvent) => { setVisualRange(e.value); }, [setVisualRange]); return ( <React.Fragment> <PolarChart id="zoomedChart" dataSource={dataSource} title="Stochastic Process" > <CommonSeriesSettings argumentField="argument" closed={false} /> <Series type="scatter" name="Test results" valueField="value" > <Point size={8} /> </Series> <Series type="line" name="Expected average" valueField="originalValue" > <Point visible={false} /> </Series> <ArgumentAxis startAngle={90} tickInterval={30} /> <ValueAxis visualRange={visualRange} /> <Export enabled={true} /> <Legend hoverMode="excludePoints" verticalAlignment="top" horizontalAlignment="center" /> </PolarChart> <RangeSelector onValueChanged={updateVisualRange} > <Size height={100} /> <Margin top={10} left={60} bottom={10} right={50} /> <Scale startValue={0} endValue={8} minorTickInterval={0.1} tickInterval={1} > <MinorTick visible={false} /> </Scale> <Behavior valueChangeMode="onHandleMove" /> </RangeSelector> </React.Fragment> ); } export default App;
import React, { useCallback, useState } from 'react'; import PolarChart, { CommonSeriesSettings, Series, Point, ArgumentAxis, ValueAxis, Export, Legend, } from 'devextreme-react/polar-chart'; import RangeSelector, { Size, Margin, Scale, MinorTick, Behavior, } from 'devextreme-react/range-selector'; import { dataSource } from './data.js'; function App() { const [visualRange, setVisualRange] = useState({ startValue: 0, endValue: 8 }); const updateVisualRange = useCallback( (e) => { setVisualRange(e.value); }, [setVisualRange], ); return ( <React.Fragment> <PolarChart id="zoomedChart" dataSource={dataSource} title="Stochastic Process" > <CommonSeriesSettings argumentField="argument" closed={false} /> <Series type="scatter" name="Test results" valueField="value" > <Point size={8} /> </Series> <Series type="line" name="Expected average" valueField="originalValue" > <Point visible={false} /> </Series> <ArgumentAxis startAngle={90} tickInterval={30} /> <ValueAxis visualRange={visualRange} /> <Export enabled={true} /> <Legend hoverMode="excludePoints" verticalAlignment="top" horizontalAlignment="center" /> </PolarChart> <RangeSelector onValueChanged={updateVisualRange}> <Size height={100} /> <Margin top={10} left={60} bottom={10} right={50} /> <Scale startValue={0} endValue={8} minorTickInterval={0.1} tickInterval={1} > <MinorTick visible={false} /> </Scale> <Behavior valueChangeMode="onHandleMove" /> </RangeSelector> </React.Fragment> ); } export default App;
import React from 'react'; import ReactDOM from 'react-dom'; import App from './App.tsx'; ReactDOM.render( <App />, document.getElementById('app'), );
function generateData(start: number, end: number, step: number) { const data: ({ value: number; originalValue: number; argument: number; })[] = []; for (let i = start; i < end; i += step) { const originalValue = Math.log(i); data.push({ value: originalValue - ((Math.sin(Math.random() * i) * i) / end) + (1 - Math.random() * 2), originalValue, argument: i, }); } return data; } export const dataSource = generateData(0, 360, 0.75);
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@24.1.3/cjs', 'devextreme-react': 'npm:devextreme-react@24.1.3/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@2.2.8/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'));
function generateData(start, end, step) { const data = []; for (let i = start; i < end; i += step) { const originalValue = Math.log(i); data.push({ value: originalValue - (Math.sin(Math.random() * i) * i) / end + (1 - Math.random() * 2), originalValue, argument: i, }); } return data; } export const dataSource = generateData(0, 360, 0.75);
<!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/24.1.3/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>
#zoomedChart { height: 440px; width: 100%; }