mapboxgl.accessToken = 'pk.eyJ1IjoiYXJ1bmFicmFoYW0iLCJhIjoiODBJTV9WUSJ9.m5tbZ5XYg8VhD-8Qu7d_SA';
// Initialize the map
var map = new mapboxgl.Map({
container: 'map', // container id
style: 'mapbox://styles/mapbox/streets-v8', //stylesheet location
center: [-68.13734351262877, 45.137451890638886], // starting position
zoom: 3 // starting zoom
});
// Add a feature
var feature = {
'type': 'Feature',
'properties': {
'name': 'Maine'
},
'geometry': {
'type': 'Polygon',
'coordinates': [[[-67.13734351262877, 45.137451890638886],
[-66.96466, 44.8097],
[-68.03252, 44.3252],
[-69.06, 43.98],
[-70.11617, 43.68405],
[-70.64573401557249, 43.090083319667144],
[-70.75102474636725, 43.08003225358635],
[-70.79761105007827, 43.21973948828747],
[-70.98176001655037, 43.36789581966826],
[-70.94416541205806, 43.46633942318431],
[-71.08482, 45.3052400000002],
[-70.6600225491012, 45.46022288673396],
[-70.30495378282376, 45.914794623389355],
[-70.00014034695016, 46.69317088478567],
[-69.23708614772835, 47.44777598732787],
[-68.90478084987546, 47.184794623394396],
[-68.23430497910454, 47.35462921812177],
[-67.79035274928509, 47.066248887716995],
[-67.79141211614706, 45.702585354182816],
[-67.13734351262877, 45.137451890638886]]]
}
};
// Make a point feature for displaying the text;
// User turf library to find the centroid of the polygon
var centroidPt = turf.centroid(feature);
centroidPt.properties.title = 'label';
map.on('style.load', function() {
// Add the feature source
map.addSource('maine', {
'type': 'geojson',
'data': feature
});
// Add the label point source
map.addSource('label', {
\t 'type': 'geojson',
'data': centroidPt
});
\t // Add the feature style
map.addLayer({
'id': 'route',
'type': 'fill',
'source': 'maine',
'layout': {},
'paint': {
'fill-color': '#088',
'fill-opacity': 0.8
}
});
// Add the label style
map.addLayer({
'id': 'label-style',
'type': 'symbol',
'source': 'label',
'layout': {
\t 'text-field': 'Label',
},
'paint': {
'text-color': 'red'
}
});
});
body { margin:0; padding:0; }
#map { position:absolute; top:0; bottom:0; width:100%; }
<script src="https://api.tiles.mapbox.com/mapbox.js/plugins/turf/v2.0.0/turf.min.js"></script>
<link href="https://api.tiles.mapbox.com/mapbox-gl-js/v0.14.1/mapbox-gl.css" rel="stylesheet"/>
<script src="https://api.tiles.mapbox.com/mapbox-gl-js/v0.14.1/mapbox-gl.js"></script>
<div id='map'></div>
我們可以在使用Mapbox工作室風格層多邊形的中心放置文本。這不涉及編程。見https://api.mapbox.com/styles/v1/personalrealestate1/cinm4j4ku001eaanfn7imnwr6.html?title=true&access_token=pk.eyJ1IjoicGVyc29uYWxyZWFsZXN0YXRlMSIsImEiOiJjaW5kb2duMG4weGZsdmdrdjd5ZTJha3N6In0.dJaZdwb6R11O5g6fzjUomQ#18.27/40.71065/-73.99161我想的標籤是在的中心多邊形不在它的第一點。 –