title: Converting coordinates from EPSG 3857 to 4326
body: <p>I have in my DB a list of coordinates in EPSG 3857 format.
  I need to convert them in EPSG 4326
  I'm trying to use DotSpatial but my code always retun a double array of Infinity.</p>
  
  <pre><code>public double[] ConvertCoodinates()
      {
          double[] xy = new double[2];
          xy[0] = 5085240.8300000000;
          xy[1] = 1530088.9600000000;
      //An array for the z coordinate
          double[] z = new double[1];
          z[0] = 0;
          ProjectionInfo pStart = KnownCoordinateSystems.Geographic.World.WGS1984;
          pStart.AuthorityCode = 3857;
          ProjectionInfo pEnd = KnownCoordinateSystems.Geographic.World.WGS1984;
          pEnd.AuthorityCode = 4326;
          Reproject.ReprojectPoints(xy, z, pStart, pEnd, 0, 1);
          return xy;
      }
  </code></pre>
  
  <p>The xy array always cointain infinity;
  Can someone help me?</p>