javascript markerclusterer 检查标记是否在集群中
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markerclusterer check if marker is in cluster
提问by jaget
I have a web based map that is using the jquery-ui-mapand markerclustererplugin to make a google map.
我有一个基于 web 的地图，它使用jquery-ui-map和markerclusterer插件来制作谷歌地图。
I filter out which markers should be shown or not then update the map.
我过滤掉哪些标记应该显示或不显示，然后更新地图。
I need to create a list of unclustered markers and so to this end need a way to check clusters against markers and find out which are not clustered.
我需要创建一个未聚类标记的列表，因此为此需要一种方法来根据标记检查聚类并找出哪些未聚类。
Is there any techniques to do this?
有什么技术可以做到这一点吗？
I have tried to cycle through clusters and manually check the markers against clusters but get an error telling me the clusters property var_clusterer.clusters_is not defined.
我试图循环遍历集群并针对集群手动检查标记，但收到错误消息，告诉我var_clusterer.clusters_未定义集群属性。
回答by hitautodestruct
NOTE: This solution uses the MarkerClustererPluslibrary
注意：此解决方案使用MarkerClustererPlus库
You can use the getClusters() method to dish out an array of all the cluster objects currently being handled by MarkerClusterer.
您可以使用 getClusters() 方法来分发当前由 MarkerClusterer 处理的所有集群对象的数组。
var clusterManager = new MarkerClusterer( googleMap, markersArray, clusterOptions ); // setup a new MarkerClusterer
var clusters = clusterManager.getClusters(); // use the get clusters method which returns an array of objects
for( var i=0, l=clusters.length; i<l; i++ ){
for( var j=0, le=clusters[i].markers_.length; j<le; j++ ){
marker = clusters[i].markers_[j]; // <-- Here's your clustered marker
}
}
After you get the array using getClusters() loop through the cluster objects. For each cluster you can pull the current markers_array and retrieve your clustered marker.
使用 getClusters() 获取数组后，循环遍历集群对象。对于每个集群，您可以拉取当前markers_数组并检索您的集群标记。
getClusters() is now in the docs: MarkerClustererPlus docs
getClusters() 现在在文档中：MarkerClustererPlus docs
回答by crazy_p
NOTE:using MarkerClustererPlusv2.1.10
注意：使用MarkerClustererPlusv2.1.10
isMarkerClustered(marker: Marker, clusterer: MarkerClusterer): boolean {
const clusters = clusterer.getClusters();
for (let i = 0, l = clusters.length; i < l; i++) {
const markers = clusters[i].getMarkers();
for (const m of markers) {
if (m === marker && markers.length > 1) {
return true;
}
}
}
return false;
}
回答by dklt
A slightly dump, but effective method....
一个略显笨拙但有效的方法......
You may insert markers individually to a Marker Clusterer Object, and immediately (1)before and (2)after, call its .getTotalCluster() method to see if the newly added marker will go into a cluster.
您可以将标记单独插入到标记聚类器对象中，并在 (1) 之前和 (2) 之后立即调用其 .getTotalCluster() 方法以查看新添加的标记是否会进入集群。
I use this method, after getClusters() didnt work for me, maybe Im not using it via jquery.
我使用这种方法，在 getClusters() 对我不起作用之后，也许我没有通过 jquery 使用它。
var old_cluster_val = markerCluster.getTotalClusters(); // <-----(1)
markerCluster.addMarker( marker );
var new_cluster_val = markerCluster.getTotalClusters(); // <-----(2)
if (old_cluster_val == new_cluster_val) {
in_a_cluster.push(marker);
} else {
not_in_cluster.push( marker );
}
