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:
- Angle and radius options specify the position of annotations with seasons names.
- Annotations with temperatures are anchored to series, and the offsetX, paddingTopBottom, and paddingLeftRight options specify their position.
For more information on annotation settings, refer to the annotations[] documentation section.
www.weather.com
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import React from 'react';
import {
PolarChart,
CommonSeriesSettings,
Series,
CommonAnnotationSettings,
Annotation,
ArgumentAxis,
Strip,
Legend
} from 'devextreme-react/polar-chart';
import { dataSource, maxDay, minNight } from './data.js';
class App extends React.Component {
constructor(props) {
super(props);
this.maxTempText = `Highest temperature: ${maxDay.day} °C`;
this.minTempText = `Lowest temperature: ${minNight.night} °C`;
}
render() {
return (
<PolarChart
id="radarChart"
dataSource={dataSource}
title="Average temperature in London"
>
<CommonSeriesSettings
type="bar"
opacity={0.75}
/>
<Series
valueField="day"
name="Day"
color="#fdff5e"
/>
<Series
valueField="night"
name="Night"
color="#0f3b59"
/>
<CommonAnnotationSettings
opacity={0.7}
arrowLength={0}
type="text"
/>
<Annotation
angle={45}
radius={180}
text="WINTER"
/>
<Annotation
angle={135}
radius={180}
text="SPRING"
/>
<Annotation
angle={225}
radius={180}
text="SUMMER"
/>
<Annotation
angle={315}
radius={180}
text="FALL"
/>
<Annotation
argument={maxDay.arg}
opacity={1}
offsetX={105}
paddingTopBottom={15}
paddingLeftRight={15}
text={this.maxTempText}
series="Day"
/>
<Annotation
argument={minNight.arg}
opacity={1}
offsetX={105}
paddingTopBottom={15}
paddingLeftRight={15}
text={this.minTempText}
series="Night"
/>
<ArgumentAxis>
<Strip
startValue="December"
endValue="February"
color="#0076d1">
</Strip>
<Strip
startValue="March"
endValue="May"
color="#3ca3b0">
</Strip>
<Strip
startValue="June"
endValue="August"
color="#3fbc1e">
</Strip>
<Strip
startValue="September"
endValue="November"
color="#f0bb00">
</Strip>
</ArgumentAxis>
<Legend
horizontalAlignment="center"
verticalAlignment="bottom"
/>
</PolarChart>
);
}
}
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/20.1.8/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.1.8/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>
#radarChart {
height: 600px;
}
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: {
},
paths: {
'npm:': 'https://unpkg.com/'
},
defaultExtension: 'js',
map: {
'react': 'npm:react@16/umd/react.development.js',
'react-dom': 'npm:react-dom@16/umd/react-dom.development.js',
'prop-types': 'npm:prop-types/prop-types.js',
'devextreme': 'npm:devextreme@20.1',
'devextreme-react': 'npm:devextreme-react@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@1.0.17',
'devexpress-gantt': 'npm:devexpress-gantt@1.0.10',
// SystemJS plugins
'plugin-babel': 'npm:systemjs-plugin-babel@0/plugin-babel.js',
'systemjs-babel-build': 'npm:systemjs-plugin-babel@0/systemjs-babel-browser.js'
},
packages: {
'devextreme': {
defaultExtension: 'js'
},
'devextreme-react': {
main: 'index.js'
},
'devextreme/events/utils': {
main: 'index'
},
'devextreme/events': {
main: 'index'
},
},
babelOptions: {
sourceMaps: false,
stage0: true,
react: true
}
});