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Polar and Radar Charts

Polar Chart with Annotations

Annotations are images and text blocks that provide additional information about the visualized data.

To configure annotations, assign an array of objects to the annotations option. To specify settings for all annotations, use the commonAnnotationSettings object. Individual settings take precedence over common settings.

Each annotation's type attribute should be set to "text" or "image". In this demo, all annotations have the "text" type.

Annotations can be added at specific coordinates or anchored to a PolarChart element. This demo illustrates annotation placement:

For more information on annotation settings, refer to the annotations[] documentation section.

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<template> <DxPolarChart id="radarChart" :data-source="dataSource" title="Average temperature in London" > <DxCommonSeriesSettings :opacity="0.75" type="bar" /> <DxSeries value-field="day" name="Day" color="#fdff5e" /> <DxSeries value-field="night" name="Night" color="#0f3b59" /> <DxCommonAnnotationSettings :opacity="0.7" :arrow-length="0" type="text" /> <DxAnnotation :angle="45" :radius="180" text="WINTER" /> <DxAnnotation :angle="135" :radius="180" text="SPRING" /> <DxAnnotation :angle="225" :radius="180" text="SUMMER" /> <DxAnnotation :angle="315" :radius="180" text="FALL" /> <DxAnnotation :argument="maxDay.arg" :opacity="1" :offset-x="105" :padding-top-bottom="15" :padding-left-right="15" :text="maxTempText" series="Day" /> <DxAnnotation :argument="minNight.arg" :opacity="1" :offset-x="105" :padding-top-bottom="15" :padding-left-right="15" :text="minTempText" series="Night" /> <DxArgumentAxis> <DxStrip start-value="December" end-value="February" color="#0076d1" /> <DxStrip start-value="March" end-value="May" color="#3ca3b0" /> <DxStrip start-value="June" end-value="August" color="#3fbc1e" /> <DxStrip start-value="September" end-value="November" color="#f0bb00" /> </DxArgumentAxis> <DxLegend horizontal-alignment="center" vertical-alignment="bottom" /> </DxPolarChart> </template> <script> import { DxPolarChart, DxCommonSeriesSettings, DxSeries, DxCommonAnnotationSettings, DxAnnotation, DxArgumentAxis, DxStrip, DxLegend } from 'devextreme-vue/polar-chart'; import { dataSource, maxDay, minNight } from './data.js'; export default { components: { DxPolarChart, DxCommonSeriesSettings, DxSeries, DxCommonAnnotationSettings, DxAnnotation, DxArgumentAxis, DxStrip, DxLegend }, data() { return { dataSource, maxDay, minNight, maxTempText: `Highest temperature: ${maxDay.day} °C`, minTempText: `Lowest temperature: ${minNight.night} °C` }; } }; </script> <style> #radarChart { height: 600px; } </style>
import Vue from 'vue'; import App from './App.vue'; new Vue({ el: '#app', components: { App }, template: '<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/20.1.7/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.1.7/css/dx.light.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>
export const dataSource = [{ arg: 'December', day: 7, night: 3 }, { arg: 'January', day: 6, night: 2 }, { arg: 'February', day: 7, night: 3 }, { arg: 'March', day: 10, night: 3 }, { arg: 'April', day: 14, night: 5 }, { arg: 'May', day: 18, night: 8 }, { arg: 'June', day: 21, night: 11 }, { arg: 'July', day: 22, night: 13 }, { arg: 'August', day: 21, night: 13 }, { arg: 'September', day: 19, night: 11 }, { arg: 'October', day: 15, night: 8 }, { arg: 'November', day: 10, night: 4 }]; export const maxDay = dataSource.reduce((prev, current) => prev.day >= current.day ? prev : current ); export const minNight = dataSource.reduce((prev, current) => prev.day <= current.day ? prev : current );
System.config({ transpiler: 'plugin-babel', meta: { '*.vue': { loader: 'vue-loader' }, }, paths: { 'npm:': 'https://unpkg.com/' }, map: { 'vue': 'npm:vue@2.6.3/dist/vue.esm.browser.js', 'vue-loader': 'npm:dx-systemjs-vue-browser@latest/index.js', 'devextreme': 'npm:devextreme@20.1', 'devextreme-vue': 'npm:devextreme-vue@20.1', 'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js', 'quill': 'npm:quill@1.3.7/dist/quill.js', 'devexpress-diagram': 'npm:devexpress-diagram@1.0.14', 'devexpress-gantt': 'npm:devexpress-gantt@1.0.7', 'plugin-babel': 'npm:systemjs-plugin-babel@0/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0/systemjs-babel-browser.js' }, packages: { 'devextreme-vue': { main: 'index.js' }, 'devextreme': { defaultExtension: 'js' }, 'devextreme/events/utils': { main: 'index' }, 'devextreme/events': { main: 'index' }, }, babelOptions: { sourceMaps: false, stage0: true } });