changeOnClusters 是什么内容呢

问题还没搞定，官方有人吗？

参考下我写的这部分代码，来实现聚合簇

this.mapCtx = wx.createMapContext('map')
this.clusterFunc()

首先获取map上下文

  /**
   * 点聚合
   */
  clusterFunc() {
    var that = this
    this.mapCtx.initMarkerCluster({
      enableDefaultStyle: false,//启用默认的聚合样式
      zoomOnClick: true,//点击已经聚合的标记点时是否实现聚合分离
      gridSize: 200,//聚合算法的可聚合距离，即距离小于该值的点会聚合至一起，以像素为单位
      complete(res) {
        console.log('点聚合初始化', res)
      }
    })
    this.mapCtx.on('markerClusterCreate', res => {
      console.log('聚合触发：', res.clusters)
      that.changeOnCluster(res.clusters)
      var clusters = res.clusters
      var markers = clusters.map(cluster => {
        const {
          center,
          clusterId,
          markerIds
        } = cluster
        return {
          ...center,
          canshow: true,
          width: 20,
          height: 20,
          clusterId, // 必须
          iconPath: '/images/place4.png',
          label: {
            content: '这里活跃着' + markerIds.length + '位朋友',
            color: '#3CB371',
            fontSize: 12,
            borderRadius: 30,
            borderWidth: 1,
            borderColor: '#dddddd',
            bgColor: '#ffffffbb',
            padding: 10,
            anchorX: -60,
            anchorY: -60,
          }
        }
      })
      this.mapCtx.addMarkers({
        markers,
        clear: false,//只改动了新增的聚合点，所以不用删除其他点
        complete(res) {
          console.log('clusterCreate addMarkers', res)
        }
      })
    })
  },

然后再往地图里面推送markers

          markers.push(
            {
              iconPath: '/images/place4.png',
              id: o,
              joinCluster: true,//是否参与聚合
              latitude: alumnusList[o].position.latitude,
              longitude: alumnusList[o].position.longitude,
              width: 20,
              height: 20,
              name: alumnusList[o].name,
              gender: alumnusList[o].gender,
             customCallout: {
                display: 'ALWAYS'
              }
            }
          )

最后这步需要把参与聚合的点，push的时候写为joinCluster为true