import React from 'react';
import {
Chart,
Series,
Strip,
StripStyle,
Legend,
ValueAxis,
Label,
Font,
Export
} from 'devextreme-react/chart';
import { temperaturesData, lowAverage, highAverage } from './data.js';
const highAverageColor = '#ff9b52';
const lowAverageColor = '#6199e6';
function customizePoint(arg) {
if (arg.value > highAverage) {
return { color: highAverageColor };
} else if (arg.value < lowAverage) {
return { color: lowAverageColor };
}
}
function customizeLabel(arg) {
if (arg.value > highAverage) {
return getLabelsSettings(highAverageColor);
} else if (arg.value < lowAverage) {
return getLabelsSettings(lowAverageColor);
}
}
function getLabelsSettings(backgroundColor) {
return {
visible: true,
backgroundColor: backgroundColor,
customizeText
};
}
function customizeText(arg) {
return `${arg.valueText}°F`;
}
export default function App() {
return (
<Chart
id="chart"
title="Temperature in September"
dataSource={temperaturesData}
customizePoint={customizePoint}
customizeLabel={customizeLabel}
>
<Series
argumentField="day"
valueField="temperature"
type="spline"
color="#a3aaaa"
/>
<ValueAxis>
<Label customizeText={customizeText} />
<Strip startValue={highAverage} color="rgba(255,155,85,0.15)">
<Label text="Above average">
<Font color={highAverageColor} />
</Label>
</Strip>
<Strip endValue={lowAverage} color="rgba(97,153,230,0.10)">
<Label text="Below average">
<Font color={lowAverageColor} />
</Label>
</Strip>
<StripStyle>
<Label>
<Font weight="500" size="14" />
</Label>
</StripStyle>
</ValueAxis>
<Legend visible={false} />
<Export enabled />
</Chart>
);
}
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/20.2.6/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.6/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;
}
export const temperaturesData = [
{ temperature: 52, day: '1' },
{ temperature: 57, day: '2' },
{ temperature: 58, day: '3' },
{ temperature: 56, day: '4' },
{ temperature: 59, day: '5' },
{ temperature: 59, day: '6' },
{ temperature: 56, day: '7' },
{ temperature: 62, day: '8' },
{ temperature: 57, day: '9' },
{ temperature: 54, day: '10' },
{ temperature: 52, day: '11' },
{ temperature: 58, day: '12' },
{ temperature: 53, day: '13' },
{ temperature: 54, day: '14' },
{ temperature: 57, day: '15' },
{ temperature: 61, day: '16' },
{ temperature: 58, day: '17' },
{ temperature: 63, day: '18' },
{ temperature: 64, day: '19' },
{ temperature: 52, day: '20' }
];
export const highAverage = 60.8;
export const lowAverage = 53;
System.config({
transpiler: 'plugin-babel',
meta: {
'devextreme/localization.js': {
"esModule": true
},
},
paths: {
'npm:': 'https://unpkg.com/'
},
defaultExtension: 'js',
map: {
'react': 'npm:react@16.14.0/umd/react.development.js',
'react-dom': 'npm:react-dom@16.14.0/umd/react-dom.development.js',
'prop-types': 'npm:prop-types@15.7.2/prop-types.js',
'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.26.0/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@20.2.6',
'devextreme-react': 'npm:devextreme-react@20.2.6',
'jszip': 'npm:jszip@3.6.0/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@0.10.3/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.0.18/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@2.0.24/dist/dx-gantt.js',
'preact': 'npm:preact@10.5.13/dist/preact.js',
'preact/hooks': 'npm:preact@10.5.13/hooks/dist/hooks.js',
// SystemJS plugins
'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'
},
packages: {
'devextreme': {
defaultExtension: 'js'
},
'devextreme-react': {
main: 'index.js'
},
'devextreme/events/utils': {
main: 'index'
},
'devextreme/events': {
main: 'index'
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js'
}
},
babelOptions: {
sourceMaps: false,
stage0: true,
react: true
}
});