OpenLayers 3: get the osm_id of the closesd point

Question

Is there a way to get osm_id of the point that is closest to a given coordinate.

The idea is to click on map and get the osm_id

 map.on('click', function(event) {
      window.alert(event.coordinate);
 });

Answer 1

You can by using ol.source getClosestFeatureToCoordindinate() and feature get().

Assuming your OpenStreetMap data is loaded into ol.source.Vector called osm.

map.on('click', function(event) {
  var osm_id = osm.getClosestFeatureToCoordinate(event.coordinate).get('osm_id');
  window.alert(osm_id);
)}

Answer 2

Returning objects at a given location is possible via Overpass API.

Unfortunately I don't have a full example. But if nobody else comes up with an example I can at least provide you some helpful links:

• How to build a custom POI map with OpenLayers and Overpass API
• Various example applications using OpenLayers and Overpass API