Zooming and Centering
Documentation
This demo shows the VectorMap zooming and centering capabilities. The map contains several cities represented by dot markers. To identify a city, pause on its marker, and the name of the city will appear in a tooltip. Moreover, if you click the marker, the map will be zoomed and centered on it. In code it is performed by calling the center(centerCoordinates) and zoomFactor(zoomFactor) methods. A click on the «Reset» button restores default center coordinates and zoom factor.
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If you have technical questions, please create a support ticket in the DevExpress Support Center.
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import React from 'react';
import VectorMap, {
Layer,
Tooltip,
} from 'devextreme-react/vector-map';
import Button from 'devextreme-react/button';
import * as mapsData from 'devextreme/dist/js/vectormap-data/world.js';
import { markers } from './data.js';
const bounds = [-180, 85, 180, -60];
class App extends React.Component {
constructor(props) {
super(props);
this.storeVectorMap = (component) => {
this.vectorMap = component.instance;
};
this.reset = () => {
this.vectorMap.center(null);
this.vectorMap.zoomFactor(null);
};
}
customizeTooltip(arg) {
if (arg.layer.type === 'marker') {
return { text: arg.attribute('name') };
}
return null;
}
markerClick(e) {
if (e.target && e.target.layer.type === 'marker') {
e.component.center(e.target.coordinates()).zoomFactor(10);
}
}
render() {
return (
<React.Fragment>
<VectorMap
ref={this.storeVectorMap}
id="vector-map"
onClick={this.markerClick}
bounds={bounds}>
<Layer
dataSource={mapsData.world}
hoverEnabled={false}>
</Layer>
<Layer
dataSource={markers}
/>
<Tooltip enabled={true}
customizeTooltip={this.customizeTooltip}
></Tooltip>
</VectorMap>
<Button
text="Reset"
id="reset"
onClick={this.reset}
></Button>
</React.Fragment>
);
}
}
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/22.1.6/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/22.1.6/css/dx.light.css" />
<link rel="stylesheet" type="text/css" href="styles.css" />
<script src="https://unpkg.com/core-js@2.6.12/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>
#vector-map {
height: 420px;
}
#reset {
margin: 10px 2px;
}
export const markers = [
{
coordinates: [-0.1262, 51.5002],
attributes: {
name: 'London',
},
},
{
coordinates: [149.1286, -35.2820],
attributes: {
name: 'Canberra',
},
},
{
coordinates: [139.6823, 35.6785],
attributes: {
name: 'Tokyo',
},
},
{
coordinates: [-77.0241, 38.8921],
attributes: {
name: 'Washington',
},
},
{
coordinates: [-75.6794, 45.4214],
attributes: {
name: 'Ottawa',
},
},
{
coordinates: [37.617778, 55.751667],
attributes: {
name: 'Moscow',
},
},
{
coordinates: [116.4, 39.933333],
attributes: {
name: 'Beijing',
},
},
{
coordinates: [12.5, 41.9],
attributes: {
name: 'Rome',
},
},
{
coordinates: [23.716667, 38],
attributes: {
name: 'Athens',
},
},
{
coordinates: [2.333333, 48.833333],
attributes: {
name: 'Paris',
},
},
{
coordinates: [-3.683333, 40.4],
attributes: {
name: 'Madrid',
},
},
{
coordinates: [-47.866667, -15.798889],
attributes: {
name: 'Brasilia',
},
},
];
window.config = {
transpiler: 'plugin-babel',
meta: {
'devextreme/localization.js': {
'esModule': true,
},
'devextreme/dist/js/vectormap-data/*': {
'esModule': true,
},
},
paths: {
'npm:': 'https://unpkg.com/',
},
defaultExtension: 'js',
map: {
'react': 'npm:react@17.0.2/umd/react.development.js',
'react-dom': 'npm:react-dom@17.0.2/umd/react-dom.development.js',
'prop-types': 'npm:prop-types@15.8.1/prop-types.js',
'devextreme/dist/js/vectormap-data': 'js/vectormap-data',
'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.28.0/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@22.1.6/cjs',
'devextreme-react': 'npm:devextreme-react@22.1.6',
'jszip': 'npm:jszip@3.7.1/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@1.5.18/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.1.65/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.33/dist/dx-gantt.js',
'@devextreme/runtime': 'npm:@devextreme/runtime@3.0.11',
'inferno': 'npm:inferno@7.4.4/dist/inferno.min.js',
'inferno-compat': 'npm:inferno-compat@7.4.11/dist/inferno-compat.min.js',
'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js',
'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js',
'inferno-hydrate': 'npm:inferno-hydrate@7.4.11/dist/inferno-hydrate.min.js',
'inferno-clone-vnode': 'npm:inferno-clone-vnode@7.4.11/dist/inferno-clone-vnode.min.js',
'inferno-create-class': 'npm:inferno-create-class@7.4.11/dist/inferno-create-class.min.js',
'inferno-extras': 'npm:inferno-extras@7.4.11/dist/inferno-extras.min.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',
// Prettier
'prettier/standalone': 'npm:prettier@2.7.1/standalone.js',
'prettier/parser-html': 'npm:prettier@2.7.1/parser-html.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',
},
},
packageConfigPaths: [
'npm:@devextreme/*/package.json',
'npm:@devextreme/runtime@3.0.11/inferno/package.json',
],
babelOptions: {
sourceMaps: false,
stage0: true,
react: true,
},
};
System.config(window.config);