Question

当我在地图上添加新标记时，我添加了一个属性以便能够使用自定义图标。然后我保存了geoJson，但是当我看到保存的geojson时，我看到prperty设置在错误的位置。

这是代码：

function updtateMarker(t, layer) {

   // t is the value I need to save in property "iconSet"
   // layer is the layer ID

    var marker = featureGroup._layers[layer];
    console.log("### updtate Marker ###");

    // if marker already exists it works good
    if (marker.feature && marker.feature.properties && marker.feature.properties.iconSet) {

        marker.feature.properties.iconSet = t;
        marker.setIcon(arrayIcon[t]); //  update icon on Map

    } else {

        // Marker is new, it doesn't exist

        //  update marker icon on Map
        marker.setIcon(runnaloIcon[t]);

       marker.feature = {properties: {iconSet: t}};
       // *****   THIS IS WRONG: why? ******
       // this will be saved in "geometry" !??!

    }

}

这是错误的 geojson：

{
    "type": "Feature",
    "properties": {},
    "geometry": {
        "properties": {
            "iconSet": 2
        },
        "geometry": {
            "type": "Point",
            "coordinates": [9.672668, 44.934964]
        }
    }

这就是我需要的：

{
    "type": "Feature",
    "properties": {
        "iconSet": 2
    },
    "geometry": {
        "type": "Point",
        "coordinates": [9.672668, 44.934964]
    }
}

只是为了完成我的代码，这是保存部分

 var data = featureGroup.toGeoJSON();
 var convertedData = JSON.stringify(data);

感谢您的帮助！

Answer 1

I fixed it adding the property when I created the new Marker instead of when using it forst time.

map.on('draw:created', function (event) {

   // Each time a featuree is created, it's added to the over arching feature group

   if (event.layerType == "marker") {

       var layer = event.layer;

       // set the  first property
       feature = layer.feature = layer.feature || {};
       feature.type = feature.type || "Feature";
       var props = feature.properties = feature.properties || {};
       props.iconSet = 1;  // default value

   }

})

Mapbox更新属性以几何形式出现

1 个答案: