'The HDOP is correctly determined from PDOP and VDOP.'

def test_positionAndVerticalSet(self):

    (pdop, vdop) = (2.0, 1.0)
    hdop = (((pdop ** 2) - (vdop ** 2)) ** 0.5)
    pe = base.PositionError(pdop=pdop, vdop=vdop)
    self._testDOP(pe, pdop, hdop, vdop)
