www.wikipedia.org
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Backend API
<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 setup lang="ts">
import {
DxPolarChart,
DxCommonSeriesSettings,
DxSeries,
DxCommonAnnotationSettings,
DxAnnotation,
DxArgumentAxis,
DxStrip,
DxLegend,
} from 'devextreme-vue/polar-chart';
import { dataSource, maxDay, minNight } from './data.ts';
const maxTempText = `Highest temperature: ${maxDay.day} °C`;
const minTempText = `Lowest temperature: ${minNight.night} °C`;
</script>
<style>
#radarChart {
height: 600px;
}
</style>
window.exports = window.exports || {};
window.config = {
transpiler: 'plugin-babel',
meta: {
'*.vue': {
loader: 'vue-loader',
},
'*.ts': {
loader: 'demo-ts-loader',
},
'*.svg': {
loader: 'svg-loader',
},
'devextreme/time_zone_utils.js': {
'esModule': true,
},
'devextreme/localization.js': {
'esModule': true,
},
'devextreme/viz/palette.js': {
'esModule': true,
},
},
paths: {
'root:': '../../../../',
'npm:': 'https://unpkg.com/',
},
map: {
'vue': 'npm:vue@3.2.47/dist/vue.esm-browser.js',
'vue-loader': 'npm:dx-systemjs-vue-browser@1.1.1/index.js',
'demo-ts-loader': 'root:utils/demo-ts-loader.js',
'svg-loader': 'root:utils/svg-loader.js',
'mitt': 'npm:mitt/dist/mitt.umd.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@24.1.5/cjs',
'devextreme-vue': 'npm:devextreme-vue@24.1.5/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@2.2.10/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',
'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-vue': {
main: 'index.js',
},
'devextreme': {
defaultExtension: '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@3.0.13/inferno/package.json',
],
babelOptions: {
sourceMaps: false,
stage0: true,
},
};
System.config(window.config);
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));
import { createApp } from 'vue';
import App from './App.vue';
createApp(App).mount('#app');
<!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/24.1.5/css/dx.light.css" />
<script src="https://unpkg.com/typescript@4.9.5/lib/typescript.js"></script>
<script type="module">
import * as vueCompilerSFC from "https://unpkg.com/@vue/compiler-sfc@3.4.16/dist/compiler-sfc.esm-browser.js";
window.vueCompilerSFC = vueCompilerSFC;
</script>
<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.ts");
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"> </div>
</div>
</body>
</html>
You can place annotations at specific coordinates or anchor them to PolarChart elements. This demo illustrates the following annotation placement methods:
- Angle and radius properties specify the position of annotations with season names.
- Annotations with temperatures are anchored to series points, and the offsetX, paddingTopBottom, and paddingLeftRight properties specify their position.
For more information on annotation settings, refer to the annotations[] help topic.