百度点聚合用来解决加载大量点要素到地图上产生覆盖现象的问题,并提高性能。
http://api.map.baidu.com/library/MarkerClusterer/1.2/docs/symbols/BMapLib.MarkerClusterer.html
最基本的实现(在此两个按钮的功能没有实现):
<!DOCTYPE html> <html> <head> <Meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <Meta name="viewport" content="initial-scale=1.0,user-scalable=no" /> <style type="text/css"> body,html {width: 100%;height: 100%;margin:0;font-family:"微软雅黑";} #allmap{width:100%;height:80%;} #r-result{width:100%;} </style> <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=您的密钥"></script> <script type="text/javascript" src="http://api.map.baidu.com/library/TextIconOverlay/1.2/src/TextIconOverlay_min.js"></script> <script type="text/javascript" src="http://api.map.baidu.com/library/MarkerClusterer/1.2/src/MarkerClusterer_min.js"></script> <title>点聚合</title> </head> <body> <div id="allmap"></div> <div id="r-result"> <input type="button" onclick="add_overlay();" value="添加点聚合" /> <input type="button" onclick="remove_overlay();" value="重新生成点聚合" /> </div> </body> </html> <script type="text/javascript"> // 百度地图API功能 var map = new BMap.Map("allmap"); map.centerAndZoom(new BMap.Point(116.404,39.915),4); map.enableScrollWheelZoom(); var MAX = 10; var markers = []; var markerClusterer = null; for (var i = 0; i < MAX; i++) { var pt = new BMap.Point(Math.random()*40+85,Math.random()*30+21); var marker = new BMap.Marker(pt); map.addOverlay(marker); markers.push(marker); } //最简单的用法,生成一个marker数组,然后调用markerClusterer类即可。 markerClusterer = new BMapLib.MarkerClusterer(map,{markers:markers}); </script>
实现两个按钮的功能,用于添加点聚合,和删除点聚合并重新加载新的点
<!DOCTYPE html> <html> <head> <Meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <Meta name="viewport" content="initial-scale=1.0,Math.random()*30+21); var marker = new BMap.Marker(pt); map.addOverlay(marker); markers.push(marker); } function add_overlay(){ //最简单的用法,生成一个marker数组,然后调用markerClusterer类即可。 markerClusterer = new BMapLib.MarkerClusterer(map,{markers:markers}); } function remove_overlay(){ for(var i=0; i<4; i++){ map.removeOverlay(markers[i]); } var markers1 = markers.slice(4,markers.length); markerClusterer.clearMarkers(); //此步骤需要 markerClusterer = new BMapLib.MarkerClusterer(map,{markers:markers1}); } </script>
原文链接:https://www.f2er.com/javaschema/283481.html