自动缩放地图以适应所有标记

Question

通过以下示例，您可以查看plunker的链接

无论在初始化地图时提供了什么缩放值，我都希望自动缩放地图，以便所有标记都在视图内。这是我的代码：

var tiles = L.tileLayer('http://{s}.tile.osm.org/{z}/{x}/{y}.png', {
        maxZoom: 18,
        attribution: '&copy; <a href="http://osm.org/copyright">OpenStreetMap</a> contributors, Points &copy 2012 LINZ'
    }),
    latlng = L.latLng(-37.82, 175.24);

var map = L.map('map', {center: latlng, zoom: 10, layers: [tiles]});

var markers = L.markerClusterGroup();

for (var i = 0; i < addressPoints.length; i++) {
    var a = addressPoints[i];
    var title = a[2];
    var marker = L.marker(new L.LatLng(a[0], a[1]), { title: title });
    marker.bindPopup(title);
    markers.addLayer(marker);
}

map.addLayer(markers);

var group = new L.featureGroup(markers);

map.fitBounds(group.getBounds());

- coure2011

Answer 1

您需要：

• 创建一个数组

• 将所有标记推入数组中

• 一旦所有标记都已添加到数组中，请创建一个 featureGroup
• 将您的标记数组添加到 featureGroup 中，然后缩放到其边界。

下面是修改后的代码

var markerArray = []; //create new markers array

for (var i = 0; i < addressPoints.length; i++) {
    var a = addressPoints[i];
    var title = a[2];
    var marker = L.marker(new L.LatLng(a[0], a[1]), { title: title });
    marker.bindPopup(title);
    markers.addLayer(marker);

    markerArray.push(marker); //add each markers to array

    if(i==addressPoints.length-1){//this is the case when all the markers would be added to array
        var group = L.featureGroup(markerArray); //add markers array to featureGroup
        map.fitBounds(group.getBounds());   
    }
}

这里是可工作的plunk

- muzaffar