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Polar Chart Zooming and Scrolling 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.

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<template> <div> <DxPolarChart id="zoomedChart" :data-source="dataSource" title="Stochastic Process" > <DxCommonSeriesSettings :closed="false" argument-field="argument" /> <DxSeries type="scatter" name="Test results" value-field="value" > <DxPoint :size="8"/> </DxSeries> <DxSeries type="line" name="Expected average" value-field="originalValue" > <DxPoint :visible="false"/> </DxSeries> <DxArgumentAxis :start-angle="90" :tick-interval="30" /> <DxValueAxis :visual-range="visualRange"/> <DxExport :enabled="true"/> <DxLegend hover-mode="excludePoints" vertical-alignment="top" horizontal-alignment="center" /> </DxPolarChart> <DxRangeSelector v-model:value="visualRange" > <DxSize :height="100"/> <DxMargin :top="10" :left="60" :bottom="10" :right="50" /> <DxScale :start-value="0" :end-value="8" :minor-tick-interval="0.1" :tick-interval="1" > <DxMinorTick :visible="false"/> </DxScale> <DxBehavior call-value-changed="onMoving"/> </DxRangeSelector> </div> </template> <script> import DxPolarChart, { DxCommonSeriesSettings, DxSeries, DxPoint, DxArgumentAxis, DxValueAxis, DxExport, DxLegend } from 'devextreme-vue/polar-chart'; import DxRangeSelector, { DxSize, DxMargin, DxScale, DxMinorTick, DxBehavior } from 'devextreme-vue/range-selector'; import { dataSource } from './data.js'; export default { components: { DxPolarChart, DxCommonSeriesSettings, DxSeries, DxPoint, DxArgumentAxis, DxValueAxis, DxExport, DxLegend, DxRangeSelector, DxSize, DxMargin, DxScale, DxMinorTick, DxBehavior }, data() { return { dataSource, visualRange: { startValue: 0, endValue: 8 } }; } }; </script> <style> #zoomedChart { height: 440px; width: 100%; } </style>
import { createApp } from 'vue'; import App from './App.vue'; createApp(App).mount('#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="" /> <link rel="stylesheet" type="text/css" href="" /> <script src=""></script> <script src=""></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>
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: originalValue, argument: i }); } return data; } export const dataSource = generateData(0, 360, 0.75);
System.config({ transpiler: 'plugin-babel', meta: { '*.vue': { loader: 'vue-loader' }, 'devextreme/localization.js': { "esModule": true }, }, paths: { 'npm:': '' }, map: { 'vue': 'npm:vue@3.0.0/dist/vue.esm-browser.js', 'vue-loader': 'npm:dx-systemjs-vue-browser@1.0.15/index.js', 'mitt': 'npm:mitt/dist/mitt.umd.js', 'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js', 'luxon': 'npm:luxon@1.25.0/build/global/luxon.min.js', 'es6-object-assign': 'npm:es6-object-assign@1.1.0', 'devextreme': 'npm:devextreme@20.2.5', 'devextreme-vue': 'npm:devextreme-vue@20.2.5', 'jszip': 'npm:jszip@3.5.0/dist/jszip.min.js', 'devextreme-quill': 'npm:devextreme-quill@0.9.8/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.0.11/dist/dx-diagram.js', 'devexpress-gantt': 'npm:devexpress-gantt@2.0.18/dist/dx-gantt.js', 'preact': 'npm:preact@10.5.11/dist/preact.js', 'preact/hooks': 'npm:preact@10.5.11/hooks/dist/hooks.js', '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-vue': { main: 'index.js' }, 'devextreme': { defaultExtension: 'js' }, 'devextreme/events/utils': { main: 'index' }, 'devextreme/events': { main: 'index' }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js' } }, babelOptions: { sourceMaps: false, stage0: true } });