【热力图】区域地图热力图，百度地图api
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【热力图】区域地图热力图，百度地图api
小編覺得挺不錯的,現在分享給大家,幫大家做個參考.
最簡單的地圖熱力圖，用的是百度的api，所以取經緯度的時候最好也用百度地圖。
這里已經填好百度api的key了，但還是建議大家注冊使用自己的key，因為有每日額度，超過訪問次數了就不可用了。
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=VNekEeQpPj7NhVX9jxcjiC1onpZUNToQ"></script>效果展示：
下面是完整代碼，注釋已經標得很清楚了，直接保存為html文件用瀏覽器打開就可以了。
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name ="viewport" content ="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no">
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=VNekEeQpPj7NhVX9jxcjiC1onpZUNToQ"></script>
<script type="text/javascript" src="http://api.map.baidu.com/library/Heatmap/2.0/src/Heatmap_min.js"></script>
<title>XXXXX</title>
<style type="text/css">
ul,li{list-style: none;margin:0;padding:0;float:left;}
html{height:100%}
body{height:100%;margin:0px;padding:0px;font-family:"微軟雅黑";}
#allmap{height:100%;100%;}
</style>
</head>
<body>
<div id="allmap"></div>
</body>
</html>
<script src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script>
<script type="text/javascript">
// 百度地圖API功能
var map = new BMap.Map("allmap");
//設置打開后的中心位置，這里設置的是北京
var point = new BMap.Point(116.512885,39.847469);
//設置打開后的縮放大小，這里設置的大致為中國版圖的大小
map.centerAndZoom(point, 5);
// 編寫自定義函數,創建標注
function addMarker(point){
var marker = new BMap.Marker(point);
map.addOverlay(marker);
}
//lat是緯度，lng是經度，count是對應的數值大小
//下列的經緯度基本覆蓋了中國各個省份及重要城市
var res = [{"count": 61, "lat": 30.5984667364009, "lng":114.311581554732},
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heatmapOverlay = new BMapLib.HeatmapOverlay({"radius":20});
map.addOverlay(heatmapOverlay);
//調整max的值效果會不一樣，但count值一定要在max值之內
heatmapOverlay.setDataSet({data: res,max:100});
</script>總結
以上是生活随笔為你收集整理的【热力图】区域地图热力图，百度地图api的全部內容，希望文章能夠幫你解決所遇到的問題。
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