GridDataset gd = GridDataset.open( datasetLocation );
GeoGrid gg = gd.findGridByName( "hs" );
GridCoordSystem gridCoordSys = gg.getCoordinateSystem();
//gridCoordSys.getXHorizAxis().;
//gridCoordSys.getYHorizAxis();
LatLonPoint llPnt = gridCoordSys.getLatLon( 170, 62 );
Assert.assertEquals( lat, llPnt.getLatitude(), 0.001 );
Assert.assertEquals( lon, llPnt.getLongitude(), 0.001 );
}