Fit to the bounds of a LineString
Get the bounds of a LineString by passing its first coordinates to LngLatBounds
and chaining extend
to include the last coordinates.
Mapbox GL unsupported
Mapbox GL requires WebGL support. Please check that you are using a supported browser and that WebGL is enabled.
<!DOCTYPE html><html><head><meta charset='utf-8' /><title>Fit to the bounds of a LineString</title><meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' /><script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.53.0/mapbox-gl.js'></script><link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.53.0/mapbox-gl.css' rel='stylesheet' /><style>body { margin:0; padding:0; }#map { position:absolute; top:0; bottom:0; width:100%; }</style></head><body> <style>.btn-control {font:bold 12px/20px 'Helvetica Neue', Arial, Helvetica, sans-serif;background-color: #3386c0;color: #fff;position: absolute;top: 20px;left: 50%;z-index: 1;border: none;width: 200px;margin-left:-100px;display: block;cursor: pointer;padding: 10px 20px;border-radius: 3px;} .btn-control:hover {background-color: #4ea0da;}</style><div id='map'></div><button id='zoomto' class='btn-control'>Zoom to bounds</nav> <script>mapboxgl.accessToken = '<your access token here>';// A GeoJSON object with a LineString route from the White House to Capitol Hillvar geojson = {"type": "FeatureCollection","features": [{"type": "Feature","geometry": {"type": "LineString","properties": {},"coordinates": [[-77.0366048812866, 38.89873175227713],[-77.03364372253417, 38.89876515143842],[-77.03364372253417, 38.89549195896866],[-77.02982425689697, 38.89549195896866],[-77.02400922775269, 38.89387200688839],[-77.01519012451172, 38.891416957534204],[-77.01521158218382, 38.892068305429156],[-77.00813055038452, 38.892051604275686],[-77.00832366943358, 38.89143365883688],[-77.00818419456482, 38.89082405874451],[-77.00815200805664, 38.88989712255097]]}}]}; var map = new mapboxgl.Map({container: 'map',style: 'mapbox://styles/mapbox/light-v9',center: [-77.0214, 38.8970],zoom: 12}); map.on('load', function() { map.addLayer({"id": "LineString","type": "line","source": {"type": "geojson","data": geojson},"layout": {"line-join": "round","line-cap": "round"},"paint": {"line-color": "#BF93E4","line-width": 5}}); document.getElementById('zoomto').addEventListener('click', function() { // Geographic coordinates of the LineStringvar coordinates = geojson.features[0].geometry.coordinates; // Pass the first coordinates in the LineString to `lngLatBounds` &// wrap each coordinate pair in `extend` to include them in the bounds// result. A variation of this technique could be applied to zooming// to the bounds of multiple Points or Polygon geomteries - it just// requires wrapping all the coordinates with the extend method.var bounds = coordinates.reduce(function(bounds, coord) {return bounds.extend(coord);}, new mapboxgl.LngLatBounds(coordinates[0], coordinates[0])); map.fitBounds(bounds, {padding: 20});});});</script> </body></html>