百度地图海量点添加标签

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/qq_38265784/article/details/84257453

为海量点的collextion中添加点击监听

pointCollection.addEventListener('click', function (e) {
                    var SITEID = "";
                    var TITLE = "";
                    for (var i = 0; i < info.length; i++) {
                        // 遍历所有的点匹配点击的经纬度，添加需要的标签信息
                        if (info[i].lng == e.point.lng && info[i].lat == e.point.lat) {
                            SITEID = info[i].SITEID;
                            TITLE = info[i].TITLE;
                            break;
                        }
                    } 
                    // 通过点击的坐标创建一个点对象，添加标签
                    var point = new BMap.Point(e.point.lng, e.point.lat);
                    var opts = {
                        title: "", 
                        enableMessage: false,
                    }
                    var infowindow = new BMap.InfoWindow("SITEID：" + SITEID + "<br/>TITLE：" + TITLE, opts);
                    map.openInfoWindow(infowindow, point);
                });

完整代码如下

d3.csv(('info.csv'), function (error, info) {
        if (error) {
            console.log(error);
        }
        else {
 
            if (document.createElement('canvas').getContext) {  // 判断当前浏览器是否支持绘制海量点
                var points = [];  // 添加海量点数据
                for (var i = 0; i < info.length; i++) {
                    points.push(new BMap.Point(info[i].lng, info[i].lat));
                }
                var options = {
                    size: BMAP_POINT_SIZE_BIG,
                    shape: BMAP_POINT_SHAPE_CIRCLE,
                    color: '#999999'
                }
                var pointCollection = new BMap.PointCollection(points, options); 
                pointCollection.addEventListener('click', function (e) {
                    var SITEID = "";
                    var TITLE = "";
                    for (var i = 0; i < info.length; i++) {
                        if (info[i].lng == e.point.lng && info[i].lat == e.point.lat) {
                            SITEID = info[i].SITEID;
                            TITLE = info[i].TITLE;
                            break;
                        }
                    }
                    var point = new BMap.Point(e.point.lng, e.point.lat);
                    var opts = {
                        title: "", // 信息窗口标题
                        enableMessage: false,//设置允许信息窗发送短息
                    }
                    var infowindow = new BMap.InfoWindow("SITEID：" + SITEID + "<br/>TITLE：" + TITLE, opts);
                    map.openInfoWindow(infowindow, point);
                });
                map.addOverlay(pointCollection);  // 添加Overlay
            } else {
                alert('请在chrome、safari、IE8+以上浏览器查看本示例');
            }
        }
    }
)