https://issues.apache.org/jira/browse/LUCENE-2519
If I change my code as per 2519 to have this - public double[] coords(double latitude, double longitude) { double rlat = Math.toRadians(latitude); double rlong = Math.toRadians(longitude); double nlat = rlong * Math.cos(rlat); return new double[]{nlat, rlong}; } return this - x = (gamma - gamma[0]) cos(phi) y = phi would it make it give correct results? Correct projections, tier ids? I am not talking about changing Lucene/Solr code, I can duplicate the classes to create my own version. Just wanted to be sure about the results. Pradeep