def toLatLon(self, height=None, LatLon=None, datum=None, **kwds):
'''Convert this n-vector to an C{Nvector}-based geodetic point.
@keyword height: Optional height, overriding this n-vector's
height (C{meter}).
@keyword LatLon: Optional (sub-)class to return the
point (L{LatLon}) or C{None}.
@keyword datum: Optional, spherical datum (C{Datum}).
@keyword kwds: Optional, additional C{name=value} pairs
for B{C{LatLon}} instance, provided
B{C{LatLon}} is not C{None}.
@return: The B{C{LatLon}} point (L{LatLon}) or if
C{B{LatLon}=None} or a L{LatLon3Tuple}C{(lat,
lon, height)} if B{C{LatLon}} is C{None}.
@raise TypeError: Invalid B{C{LatLon}}.
@example:
>>> v = Nvector(0.5, 0.5, 0.7071)
>>> p = v.toLatLon() # 45.0°N, 45.0°E
'''
h = self.h if height is None else height
d = datum or self.datum
# XXX use self.Cartesian(Cartesian=None) if h == self.h
# and d == self.datum, for better accuracy of the height
r = self.Ecef(d).forward(Vector3d.to2ll(self), height=h, M=True)
if LatLon is not None: # class or .classof
r = LatLon(r.lat, r.lon, r.height, datum=r.datum, **kwds)
return self._xnamed(r)
def _to3LLh(self, LL, height, **kwds):
'''(INTERNAL) Helper for C{subclass.toLatLon} and C{.to3llh}.
'''
h = self.h if height is None else height
r = Vector3d.to2ll(self) # LatLon2Tuple
if LL is None:
r = r._3Tuple(h) # already ._xnamed
else:
r = self._xnamed(LL(r.lat, r.lon, height=h, **kwds))
return r