Add layerName and layers options to ol.source.TopoJSON

2017-05-16 16:19:33 +02:00
parent 342c49f0bb
commit 7ecb2c0185
6 changed files with 154 additions and 80 deletions
@@ -29,13 +29,14 @@ var style = new ol.style.Style({
 var vector = new ol.layer.Vector({
  source: new ol.source.Vector({
    url: 'data/topojson/world-110m.json',
-    format: new ol.format.TopoJSON(),
+    format: new ol.format.TopoJSON({
+      // don't want to render the full world polygon (stored as 'land' layer),
+      // which repeats all countries
+      layers: ['countries']
+    }),
    overlaps: false
  }),
-  style: function(feature) {
-    // don't want to render the full world polygon, which repeats all countries
-    return feature.getId() !== undefined ? style : null;
-  }
+  style: style
 });

 var map = new ol.Map({