在Leaflet中可视化具有属性的线串

Question

我想要可视化下面的GeoJSON对象，它被发送到我的Leaflet/JavaScript应用程序。我如何可视化所有的线串，显示每个线串的properties.name参数(例如，通过ToolTip)。

{“功能”：[{“类型”：“功能”，“属性”：{“名称”：“0”}，“几何”：{“类型”：“LineString”，"coordinates":[10.941445541381836,52.438697814941406,10.941454124450684,52.4387092590332,10.941451263427734,52.43870544433594,10.941445541381836,52.438697814941406,10.941254806518555,52.440738677978516]}}，{“类型”：“功能”，“属性”：{“名称”：“0”}，“几何”：{“类型”：“LineString”，"coordinates":[10.941445541381836,52.438697814941406,10.941454124450684,52.4387092590332,10.941451263427734,52.43870544433594,10.941445541381836,52.438697814941406,10.941254806518555,52.440738677978516]}}}

任何帮助都是最好的！

谢谢

Answer 1

您没有正确使用GeoJSON。如果您有多个要素，则应使用要素集合：https://geojson.org/geojson-spec.html

然后使用此网站具有正确的格式：https://jsonformatter.curiousconcept.com/

然后，如果您想要添加工具提示，请参阅本教程：http://leafletjs.com/examples/geojson/

var geojsonFeature = {
   "type":"FeatureCollection",
   "features":[
      {
         "type":"Feature",
         "geometry":{
            "type":"LineString",
            "coordinates":[
               [
                  10.941445541381836,
                  52.438697814941406
               ],
               [
                  10.941454124450684,
                  52.4387092590332
               ],
               [
                  10.941451263427734,
                  52.43870544433594
               ],
               [
                  10.941445541381836,
                  52.438697814941406
               ],
               [
                  10.941254806518555,
                  52.440738677978516
               ]
            ]
         },
         "properties":{
            "name":"0"
         }
      },
      {
         "type":"Feature",
         "geometry":{
            "type":"LineString",
            "coordinates":[
               [
                  10.941445541381836,
                  52.438697814941406
               ],
               [
                  10.941454124450684,
                  52.4387092590332
               ],
               [
                  10.941451263427734,
                  52.43870544433594
               ],
               [
                  10.941445541381836,
                  52.438697814941406
               ],
               [
                  10.941254806518555,
                  52.440738677978516
               ]
            ]
        },
        "properties":{
           "name":"0"
        }
      }
   ]
};

function onEachFeature(feature, layer) {
    // This is where it loop through your features
    if (feature.properties) {
        // If there is a properties document we bind a tooltip with your property : name
        layer.bindTooltip(feature.properties.name);
    }
}

L.geoJSON(geojsonFeature, {
    onEachFeature: onEachFeature
}).addTo(map);