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48 lines
1.2 KiB
Markdown
48 lines
1.2 KiB
Markdown
# Scale Control
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This is a React equivalent of Mapbox's [ScaleControl](https://docs.mapbox.com/mapbox-gl-js/api/#scalecontrol).
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```js
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import * as React from 'react';
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import ReactMapGL, {ScaleControl} from 'react-map-gl';
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function App() {
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const [viewport, setViewport] = React.useState({
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longitude: -122.45,
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latitude: 37.78,
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zoom: 14
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});
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return (
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<ReactMapGL {...viewport} width="100vw" height="100vh" onViewportChange={setViewport}>
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<div style={{position: 'absolute', bottom: 100, left: 20}}>
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<ScaleControl maxWidth={100} unit="metric" />
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</div>
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</ReactMapGL>
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);
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}
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```
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## Properties
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##### `maxWidth` (Number)
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- default: `100`
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The maximum length of the scale control in pixels.
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##### `unit` (String)
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- default: `'metric'`
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Unit of the distance, one of `'imperial'`, `'metric'` or `'nautical'`.
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## Styling
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Like its Mapbox counterpart, this control relies on the mapbox-gl stylesheet to work properly. Make sure to add the stylesheet to your page.
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## Source
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[scale-control.js](https://github.com/visgl/react-map-gl/tree/6.0-release/src/components/scale-control.js)
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