title: OpenLayers 4 center map on city coordinates
body: <p>I have a problem with centering my map on creation.</p>
  
  <p>My javascript code is from the quick start guide, same goes for the html code.</p>
  
  <pre><code>var map = new ol.Map({
      target: 'map',
      layers: [
        new ol.layer.Tile({
          source: new ol.source.OSM()
        })
      ],
      view: new ol.View({
        center: ol.proj.transform([51.35847, 7.49918], 'EPSG:4326', 'EPSG:3857'),
        zoom: 4
      })
    });
  </code></pre>
  
  <p>It just won't center and I don't understand why? I did exactly as described in other questions and topics on stackoverflow....</p>
  
  <p>Fiddle:<a href="https://jsfiddle.net/gpo33ga6/" rel="nofollow noreferrer">https://jsfiddle.net/gpo33ga6/</a></p>