* @return a geographic CoordinateReferenceSystem based on the datum of this CRS
*/
public CoordinateReferenceSystem createGeographic()
{
Datum datum = getDatum();
Projection geoProj = new LongLatProjection();
geoProj.setEllipsoid(getProjection().getEllipsoid());
geoProj.setUnits(Units.DEGREES);
geoProj.initialize();
return new CoordinateReferenceSystem("GEO-" + datum.getCode(), null, datum, geoProj);
}