Scale Breaks
Documentation
Scale breaks allow breaking off parts of the axis to improve the readability of a chart with high amplitude values. This example demonstrates auto-calculated scale breaks. You can change the number of breaks, their style or disabled them.
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import React from 'react';
import Chart, {
Legend,
Series,
Tooltip,
ValueAxis
} from 'devextreme-react/chart';
import SelectBox from 'devextreme-react/select-box';
import CheckBox from 'devextreme-react/check-box';
import { dataSource } from './data.js';
const lineStyles = ['waved', 'straight'];
const breaksCount = [1, 2, 3, 4];
class App extends React.Component {
constructor(props) {
super(props);
this.state = {
autoBreaksEnabledValue: true,
breaksCountValue: 3,
lineStyleValue: lineStyles[0]
};
this.changeBreaksCount = (e) => {
this.setState({
breaksCountValue: e.value
});
};
this.changeStyle = (e) => {
this.setState({
lineStyleValue: e.value
});
};
this.changeBreaksEnabledState = (e) => {
this.setState({
autoBreaksEnabledValue: e.value
});
};
}
render() {
return (
<div>
<Chart
id={'chart'}
title={'Relative Masses of the Heaviest\n Solar System Objects'}
dataSource={dataSource}>
<Series
valueField={'mass'}
argumentField={'name'}
type={'bar'} />
<ValueAxis
visible={true}
autoBreaksEnabled={this.state.autoBreaksEnabledValue}
maxAutoBreakCount={this.state.breaksCountValue}
breakStyle={{ line: this.state.lineStyleValue }} />
<Legend visible={false} />
<Tooltip enabled={true} />
</Chart>
<div className={'options'}>
<div className={'caption'}>Options</div>
<div className={'option'}>
<CheckBox className={'checkbox'}
text={'Enable Breaks'}
onValueChanged={this.changeBreaksEnabledState}
value={this.state.autoBreaksEnabledValue}>
</CheckBox>
</div>
<div className={'option center'}>
<span>Max Count </span>
<SelectBox
items={breaksCount}
value={this.state.breaksCountValue}
onValueChanged={this.changeBreaksCount}
width={60}>
</SelectBox>
</div>
<div className={'option right'}>
<span>Style </span>
<SelectBox
items={lineStyles}
value={this.state.lineStyleValue}
onValueChanged={this.changeStyle}
width={120}>
</SelectBox>
</div>
</div>
</div>
);
}
}
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/19.1.5/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.1.5/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>
#chart {
height: 440px;
}
.options {
padding: 20px;
background-color: rgba(191, 191, 191, 0.15);
margin-top: 20px;
}
.caption {
font-size: 18px;
font-weight: 500;
}
.option {
display: inline-block;
margin-right: 70px;
margin-top: 5px;
}
.option > span {
margin: 0 10px 0 0;
}
.checkbox{
margin-top: -4px;
}
.option > .dx-widget {
display: inline-block;
vertical-align: middle;
}
export const dataSource = [{
name: 'Jupiter',
mass: 318,
}, {
name: 'Saturn',
mass: 95,
}, {
name: 'Uranus',
mass: 14.6,
}, {
name: 'Neptune',
mass: 17.2,
}, {
name: 'Earth',
mass: 1,
}, {
name: 'Venus',
mass: 0.82,
}, {
name: 'Mars',
mass: 0.11,
}, {
name: 'Mercury',
mass: 0.06,
}];
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@19.1',
'devextreme-react': 'npm:devextreme-react@19.1',
'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js',
'quill': 'npm:quill@1.3.6/dist/quill.js',
'devexpress-diagram': 'npm:devexpress-diagram',
// 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
}
});