OpenLayers v3.5.0 map, loading features from a GeoJSON using bbox strategy

471 views Asked by At

I'm trying to use the approach described in this question, but instead of using jQuery to perform the ajax request, I'm using angularJS $http method. I've already verified and the features are being loaded into the source of the layer, but nothing is shown.

Here is the definition of the source:

var vectorSource = new ol.source.Vector({
  loader: function(extent, resolution){   
     $http.get(url).success(function(data){

     var formatGeo = new ol.format.GeoJSON();

     var features = formatGeo.readFeatures(data,
       {featureProjection: 'EPSG:4326'});

    vectorSource.addFeatures(features);
    console.log(vectorSource.getFeatures().length);
  })},
    strategy: ol.loadingstrategy.bbox
});

Is there any incompatibility problems with using angularJS and openlayers?

1

There are 1 answers

0
rokjoana On BEST ANSWER

The problem was the mismatch of the projection of the data in my GeoJSON (EPSG:4326) and of the map (OpenLayers3 default, EPSG:3857).

To solve the problem, I changed the projection of the data that I was using to build the GeoJSON to EPSG:3857. Since the data was stored in a postGis database, I used the function ST_Transform to change the projection of the geom column contaning the objects.