独角兽企业重金招聘Python工程师标准>>>
openlayers3 加载百度地图：
var projection = ol.proj.get("EPSG:3857");
var resolutions = [];
for(var i=0; i<19; i++){
resolutions[i] = Math.pow(2, 18-i);
}
var tilegrid = new ol.tilegrid.TileGrid({
origin: [0,0],
resolutions: resolutions
});
var baidu_source = new ol.source.TileImage({
projection: projection,
tileGrid: tilegrid,
tileUrlFunction: function(tileCoord, pixelRatio, proj){
if(!tileCoord){
return "";
}
var z = tileCoord[0];
var x = tileCoord[1];
var y = tileCoord[2];
if(x<0){
x = "M"+(-x);
}
if(y<0){
y = "M"+(-y);
}
return "http://online3./onlinelabel/?qt=tile&x="+x+"&y="+y+"&z="+z+"&styles=pl&udt=1021&scaler=1&p=1";
}
});
var baidu_layer = new ol.layer.Tile({
source: baidu_source
});
var map = new ol.Map({
target: 'map',
layers: [baidu_layer],
view: new ol.View({
center: [12959773,4853101],
zoom: 12
})
});
openlayers3 加载天地图：
路网
var tian_di_tu_road_layer = new ol.layer.Tile({
title: "天地图路网",
source: new ol.source.XYZ({
url: "/DataServer?T=vec_w&x={x}&y={y}&l={z}"
})
});
map.addLayer(tian_di_tu_road_layer);
注记
var tian_di_tu_annotation = new ol.layer.Tile({
title: "天地图文字标注",
source: new ol.source.XYZ({
url: '/DataServer?T=cva_w&x={x}&y={y}&l={z}'
})
});
map.addLayer(tian_di_tu_annotation);
卫星影像
var tian_di_tu_satellite_layer = new ol.layer.Tile({
title: "天地图卫星影像",
source: new ol.source.XYZ({
url: '/DataServer?T=img_w&x={x}&y={y}&l={z}'
})
});
map.addLayer(tian_di_tu_satellite_layer);
