场景

Leaflet中添加标记、折线、圆圈、多边形、弹窗显示点击处坐标：

Leaflet中添加标记、折线、圆圈、多边形、弹窗显示点击处坐标_BADAO_LIUMANG_QIZHI的博客-CSDN博客

在上面实现地图上添加marker标记的功能之后，如果点位特别多，怎样实现聚合效果。

官方提供了插件

官方插件github地址：

https://github.com/Leaflet/Leaflet.markercluster

示例地址：

Leaflet debug page

按照其官方示例代码的源代码，本地复现。

注：

博客：
BADAO_LIUMANG_QIZHI的博客_霸道流氓气质_CSDN博客-C#,SpringBoot,架构之路领域博主
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实现

1、新建css样式文件,这是官方示例代码中所使用的聚合样式文件

MarkerCluster.css

.leaflet-cluster-anim .leaflet-marker-icon, .leaflet-cluster-anim .leaflet-marker-shadow {-webkit-transition: -webkit-transform 0.3s ease-out, opacity 0.3s ease-in;-moz-transition: -moz-transform 0.3s ease-out, opacity 0.3s ease-in;-o-transition: -o-transform 0.3s ease-out, opacity 0.3s ease-in;transition: transform 0.3s ease-out, opacity 0.3s ease-in;
}.leaflet-cluster-spider-leg {/* stroke-dashoffset (duration and function) should match with leaflet-marker-icon transform in order to track it exactly */-webkit-transition: -webkit-stroke-dashoffset 0.3s ease-out, -webkit-stroke-opacity 0.3s ease-in;-moz-transition: -moz-stroke-dashoffset 0.3s ease-out, -moz-stroke-opacity 0.3s ease-in;-o-transition: -o-stroke-dashoffset 0.3s ease-out, -o-stroke-opacity 0.3s ease-in;transition: stroke-dashoffset 0.3s ease-out, stroke-opacity 0.3s ease-in;
}

MarkerCluster.Default.css

.marker-cluster-small {background-color: rgba(181, 226, 140, 0.6);}
.marker-cluster-small div {background-color: rgba(110, 204, 57, 0.6);}.marker-cluster-medium {background-color: rgba(241, 211, 87, 0.6);}
.marker-cluster-medium div {background-color: rgba(240, 194, 12, 0.6);}.marker-cluster-large {background-color: rgba(253, 156, 115, 0.6);}
.marker-cluster-large div {background-color: rgba(241, 128, 23, 0.6);}/* IE 6-8 fallback colors */
.leaflet-oldie .marker-cluster-small {background-color: rgb(181, 226, 140);}
.leaflet-oldie .marker-cluster-small div {background-color: rgb(110, 204, 57);}.leaflet-oldie .marker-cluster-medium {background-color: rgb(241, 211, 87);}
.leaflet-oldie .marker-cluster-medium div {background-color: rgb(240, 194, 12);}.leaflet-oldie .marker-cluster-large {background-color: rgb(253, 156, 115);}
.leaflet-oldie .marker-cluster-large div {background-color: rgb(241, 128, 23);
}.marker-cluster {background-clip: padding-box;border-radius: 20px;}
.marker-cluster div {width: 30px;height: 30px;margin-left: 5px;margin-top: 5px;text-align: center;border-radius: 15px;font: 12px "Helvetica Neue", Arial, Helvetica, sans-serif;}
.marker-cluster span {line-height: 30px;}

2、新建js文件leaflet.markercluster-src.js，这是实现聚合效果的核心js文件

代码较多，可以直接从github或者示例代码中下载

3、新建marker点位数据源的js文件，realworld.388.js

数据量较大，同上直接下载

4、修改js与css路径后实例化markerCluster

        //实例化markerClustervar markers = L.markerClusterGroup();

5、循环将marker数据源中的点marker添加进markerClusterGroup中

        //循环将点marker添加进markerCluserGroupfor (var i = 0; i < addressPoints.length; i++) {var a = addressPoints[i];var title = a[2];//LatLng表示具有特定纬度和经度的地理点var marker = L.marker(new L.LatLng(a[0], a[1]), {title: title});//绑定点击弹窗事件marker.bindPopup(title);//将点marker添加进markerCluserGroupmarkers.addLayer(marker);}

6、将markerClusterGroup添加到地图上

        //将markerClusterGroup添加到地图上map.addLayer(markers);

7、完整示例代码


<!doctype html>
<html lang="en"><head><meta charset="UTF-8"><title>leaflet使用markercluster实现聚合</title><link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css" /><style>html,body,#map {padding: 0;margin: 0;width: 100%;height: 100%;overflow: hidden;}</style><link rel="stylesheet" href=".css/MarkerCluster.css" /><link rel="stylesheet" href="./css/MarkerCluster.Default.css" /></head><body><div id="map"></div><script type="text/javascript" src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"></script><script src="./js/leaflet.markercluster-src.js"></script><script src="./js/realworld.388.js"></script><script type="text/javascript">var map = L.map('map').setView([36.09, 120.35], 13);L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {attribution: ''}).addTo(map);//实例化markerClustervar markers = L.markerClusterGroup();//循环将点marker添加进markerCluserGroupfor (var i = 0; i < addressPoints.length; i++) {var a = addressPoints[i];var title = a[2];//LatLng表示具有特定纬度和经度的地理点var marker = L.marker(new L.LatLng(a[0], a[1]), {title: title});//绑定点击弹窗事件marker.bindPopup(title);//将点marker添加进markerCluserGroupmarkers.addLayer(marker);}//将markerClusterGroup添加到地图上map.addLayer(markers);</script>
</body></html>

8、效果

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Leaflet中使用markerCluster实现点聚合效果

场景

实现

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