如何在 openlayers 中向 WKT 几何体添加可选参数

Question

我想为我的 WKT 点添加一些参数，例如 'name'、'population' 和 'rainfall'。
我的地图中缺少附加功能。

           // basic map
          .
          .
          .


          // add wkt point


            const wkt = 'POINT (8 50)';

            const format = new ol.format.WKT();

            const iconFeature = format.readFeature(wkt, {
              dataProjection: 'EPSG:4326',
              featureProjection: 'EPSG:3857',
              name: 'Aachen',
              population: 220000,
              rainfall: 500
            });
            console.log(iconFeature);

            map.addFeature(iconFeature);

Answer 1

你的 iconFeature 是一个 ol.Feature 你可以设置任何你想要的属性:

const iconFeature = format.readFeature(wkt, {
      dataProjection: 'EPSG:4326',
      featureProjection: 'EPSG:3857'
    });
iconFeature.set('name', 'Aachen');
iconFeature.set('population', '220000');
iconFeature.set('rainfall', '500');

见http://openlayers.org/en/latest/apidoc/ol.Feature.html and http://openlayers.org/en/latest/apidoc/ol.format.WKT.html

如何在 openlayers 中向 WKT 几何体添加可选参数

How to add optional parameters to WKT geometry in openlayers

openlayers