'Returns the position vector of the origin of this coordinate
system with respect to another Point/CoordSys3D.
Parameters
other : Point/CoordSys3D
If other is a Point, the position of this system\'s origin
wrt it is returned. If its an instance of CoordSyRect,
the position wrt its origin is returned.
Examples
>>> from sympy.vector import CoordSys3D
>>> N = CoordSys3D(\'N\')
>>> N1 = N.locate_new(\'N1\', 10 * N.i)
>>> N.position_wrt(N1)
(-10)*N.i'

@cacheit
def position_wrt(self, other):

    return self.origin.position_wrt(other)
