Polar Chart Zooming and Scrolling API
To zoom a PolarChart into a specific range on the value axis, specify the PolarChart's visualRange option.
In this demo, this option 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.
Feel free to share demo-related thoughts here.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
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import React from 'react';
import { dataSource } from './data.js';
import PolarChart, {
CommonSeriesSettings,
Series,
Point,
ArgumentAxis,
ValueAxis,
Export,
Legend
} from 'devextreme-react/polar-chart';
import RangeSelector, {
Size,
Margin,
Scale,
MinorTick,
Behavior
} from 'devextreme-react/range-selector';
class App extends React.Component {
constructor(props) {
super(props);
this.state = {
visualRange: { startValue: 0, endValue: 8 }
};
this.updateVisualRange = this.updateVisualRange.bind(this);
}
render() {
return (
<React.Fragment>
<PolarChart
id="zoomedChart"
dataSource={dataSource}
title="Stochastic Process"
>
<CommonSeriesSettings
argumentField="argument"
closed={false}
/>
<Series
type="scatter"
name="Test results"
valueField="value"
>
<Point size={8} />
</Series>
<Series
type="line"
name="Expected average"
valueField="originalValue"
>
<Point visible={false} />
</Series>
<ArgumentAxis
startAngle={90}
tickInterval={30}
/>
<ValueAxis visualRange={this.state.visualRange} />
<Export enabled={true} />
<Legend
hoverMode="excludePoints"
verticalAlignment="top"
horizontalAlignment="center"
/>
</PolarChart>
<RangeSelector
onValueChanged={this.updateVisualRange}
>
<Size height={100} />
<Margin
top={10}
left={60}
bottom={10}
right={50}
/>
<Scale
startValue={0}
endValue={8}
minorTickInterval={0.1}
tickInterval={1}
>
<MinorTick visible={false} />
</Scale>
<Behavior callValueChanged="onMoving" />
</RangeSelector>
</React.Fragment>
);
}
updateVisualRange(e) {
this.setState({ visualRange: e.value });
}
}
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/19.2.4/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.4/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>
#zoomedChart {
height: 440px;
width: 100%;
}
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',
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',
'devexpress-diagram': 'npm:devexpress-diagram',
'devexpress-gantt': 'npm:devexpress-gantt',
// 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
}
});