Update Circular Gauge Data at Runtime
Documentation
This demo illustrates how to bind an array of subvalues to the CircularGauge. Since an array can not be bound to a field as a regular value, it is bound as a computed one.
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import React from 'react';
import { CircularGauge, Scale, Label, RangeContainer, Range, Tooltip, Title, Font } from 'devextreme-react/circular-gauge';
import { SelectBox } from 'devextreme-react/select-box';
import { dataSource } from './data.js';
class App extends React.Component {
constructor(props) {
super(props);
this.state = {
value: dataSource[0].mean,
subvalues: [dataSource[0].min, dataSource[0].max]
};
this.onSelectionChanged = ({ selectedItem }) => {
this.setState({
value: selectedItem.mean,
subvalues: [selectedItem.min, selectedItem.max]
});
};
}
render() {
return (
<div id={'gauge-demo'}>
<CircularGauge
id={'gauge'}
value={this.state.value}
subvalues={this.state.subvalues}
>
<Scale startValue={10} endValue={40} tickInterval={5}>
<Label customizeText={this.customizeText} />
</Scale>
<RangeContainer>
<Range startValue={10} endValue={20} color={'#0077BE'} />
<Range startValue={20} endValue={30} color={'#E6E200'} />
<Range startValue={30} endValue={40} color={'#77DD77'} />
</RangeContainer>
<Tooltip enabled={true} />
<Title text={'Temperature in the Greenhouse'}>
<Font size={28} />
</Title>
</CircularGauge>
<SelectBox
id={'seasons'}
width={150}
dataSource={dataSource}
defaultValue={dataSource[0]}
displayExpr={'name'}
onSelectionChanged={this.onSelectionChanged}
/>
</div>
);
}
customizeText({ valueText }) {
return `${valueText} °C`;
}
}
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/19.2.3/css/dx.common.css" />
<link rel="dx-theme" data-theme="generic.light" href="https://cdn3.devexpress.com/jslib/19.2.3/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>
#gauge-demo {
height: 440px;
width: 100%;
}
#gauge {
width: 80%;
height: 100%;
float: left;
}
#seasons {
width: 20%;
float: left;
text-align: left;
margin-top: 20px;
}
export const dataSource = [{
name: 'Summer',
mean: 35,
min: 28,
max: 38
}, {
name: 'Autumn',
mean: 24,
min: 20,
max: 32
}, {
name: 'Winter',
mean: 18,
min: 16,
max: 23
}, {
name: 'Spring',
mean: 27,
min: 18,
max: 31
}];
System.config({
transpiler: 'plugin-babel',
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@19.2',
'devextreme-react': 'npm:devextreme-react@19.2',
'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js',
'quill': 'npm:quill@1.3.7/dist/quill.js',
// 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'
}
},
babelOptions: {
sourceMaps: false,
stage0: true,
react: true
}
});