2019獨(dú)角獸企業(yè)重金招聘Python工程師標(biāo)準(zhǔn)>>>

openlayers3 加載百度地圖：

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.map.bdimg.com/onlinelabel/?qt=tile&x="+x+"&y="+y+"&z="+z+"&styles=pl&udt=20151021&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 加載天地圖：

路網(wǎng) var tian_di_tu_road_layer = new ol.layer.Tile({title: "天地圖路網(wǎng)",source: new ol.source.XYZ({url: "http://t4.tianditu.com/DataServer?T=vec_w&x={x}&y={y}&l={z}"}) }); map.addLayer(tian_di_tu_road_layer); 注記 var tian_di_tu_annotation = new ol.layer.Tile({title: "天地圖文字標(biāo)注",source: new ol.source.XYZ({url: 'http://t3.tianditu.com/DataServer?T=cva_w&x={x}&y={y}&l={z}'}) }); map.addLayer(tian_di_tu_annotation); 衛(wèi)星影像 var tian_di_tu_satellite_layer = new ol.layer.Tile({title: "天地圖衛(wèi)星影像",source: new ol.source.XYZ({url: 'http://t3.tianditu.com/DataServer?T=img_w&x={x}&y={y}&l={z}'}) }); map.addLayer(tian_di_tu_satellite_layer);

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轉(zhuǎn)載于:https://my.oschina.net/u/1783074/blog/714449

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