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    <p>Hi,</p>
    <p>since API v3.18.0 it's not longer possible to transform feature
      coordinates with defaultDataProjection and featureProjection:<br>
      <br>
        source: new ol.source.Vector({<br>
         format: new
ol.format.GeoJSON({defaultDataProjection:'EPSG:3857',featureProjection:'EPSG:25832'}),<br>
         url: '<span class="str">file.geojson'</span><br>
        })<br>
       <br>
      I can only transform with readFeatures():<br>
      <br>
      var e_bike = new ol.layer.Vector({<br>
       source: new ol.source.Vector()<br>
      });<br>
      $.ajax(<span class="str">'file.geojson'</span><span class="pun"></span>).then(function(response)
      {<br>
        var geojsonFormat = new ol.format.GeoJSON();<br>
        var features =
geojsonFormat.readFeatures(response,{dataProjection:'EPSG:25832',featureProjection:'EPSG:3857'});<br>
        e_bike.getSource().addFeatures(features);<br>
      });</p>
    <p><span>Tested up to v3.20.0 API.<br>
      </span></p>
    <p>Thanks for your help!</p>
    <p>Dietmar.
    </p>
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