将属性添加到将成为geojson选项的传单层

Question

让我们说我在地图集地图上绘制一个形状,并在绘图:crated事件上执行此操作:

 e.layer.properties = {};
 e.layer.properties.myId = 'This is myId';

如果我这样做featureGroup.toGeoJSON(),geojson功能有一个空的属性对象.有没有什么方法我配置一个传单层,以便当它转换为geoJson时,它将设置某些属性？

Answer 1

实际上,诀窍就是feature用它来定义图层type(必须是a "Feature")和properties(使用后者记录你需要的任何信息).

map.on('draw:created', function (event) {
    var layer = event.layer,
        feature = layer.feature = layer.feature || {}; // Initialize feature

    feature.type = feature.type || "Feature"; // Initialize feature.type
    var props = feature.properties = feature.properties || {}; // Initialize feature.properties
    props.myId = 'This is myId';
    drawnItems.addLayer(layer); // whatever you want to do with the created layer
});

另请参阅Leaflet Draw在将FeatureGroup转换为GeoJson时不采用属性并更新geojson的属性以将其与传单一起使用

Answer 2

您可以修改传单源代码或编写自己的函数来处理图层并设置您要查找的属性。