如何绘制GeoJSON的一部分？

Question

I load all geojson (countries) in VectorSource by url. It is displayed instantly on the map.

But I need to display specific part of geojson. For example user selects USA country and the map have to draw only USA borderies.

How to do that in OpenLayers?

Answer 1

You should create new vector layer, and on select event add selected features from geojson file into new layer:

vectorCountires.getSource().clear(); vectorCountires.getSource().addFeatures(arrayOfFeatures);