百度地圖API 重新生成點聚合的功能
阿新 • • 發佈：2019-02-07
百度點聚合用來解決載入大量點要素到地圖上產生覆蓋現象的問題，並提高效能。
http://api.map.baidu.com/library/MarkerClusterer/1.2/docs/symbols/BMapLib.MarkerClusterer.html
最基本的實現（在此兩個按鈕的功能沒有實現）：
<!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:"微軟雅黑";} #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=您的金鑰"></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>點聚合</title> </head> <body> <div id="allmap"></div> <div id="r-result"> <input type="button" onclick="add_overlay();" value="新增點聚合" /> <input type="button" onclick="remove_overlay();" value="重新生成點聚合" /> </div> </body> </html> <script type="text/javascript"> // 百度地圖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); } //最簡單的用法，生成一個marker陣列，然後呼叫markerClusterer類即可。 markerClusterer = new BMapLib.MarkerClusterer(map, {markers:markers}); </script>
實現兩個按鈕的功能，用於新增點聚合，和刪除點聚合並重新載入新的點
<!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:"微軟雅黑";} #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=您的金鑰"></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>點聚合</title> </head> <body> <div id="allmap"></div> <div id="r-result"> <input type="button" onclick="add_overlay();" value="新增點聚合" /> <input type="button" onclick="remove_overlay();" value="重新生成點聚合" /> </div> </body> </html> <script type="text/javascript"> // 百度地圖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); } function add_overlay(){ //最簡單的用法，生成一個marker陣列，然後呼叫markerClusterer類即可。 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(); //此步驟需要 markerClusterer = new BMapLib.MarkerClusterer(map, {markers:markers1}); } </script>
