nvector.objects.FrameE

class FrameE(a=None, f=None, name='WGS84', axes='e')

Earth-fixed frame

Parameters:

a: real scalar, default WGS-84 ellipsoid.

Semi-major axis of the Earth ellipsoid given in [m].

f: real scalar, default WGS-84 ellipsoid.

Flattening [no unit] of the Earth ellipsoid. If f==0 then spherical Earth with radius a is used in stead of WGS-84.

name: string

defining the default ellipsoid.

axes: ‘e’ or ‘E’

defines axes orientation of E frame. Default is axes=’e’ which means that the orientation of the axis is such that: z-axis -> North Pole, x-axis -> Latitude=Longitude=0.

See also

FrameN, FrameL, FrameB

Notes

The frame is Earth-fixed (rotates and moves with the Earth) where the origin coincides with Earth’s centre (geometrical centre of ellipsoid model).

__init__(self, a=None, f=None, name='WGS84', axes='e')

x.__init__(…) initializes x; see help(type(x)) for signature

Methods

ECEFvector(self, \*args, \*\*kwds)	Geographical position given as Cartesian position vector in frame E
GeoPoint(self, \*args, \*\*kwds)	Geographical position given as latitude, longitude, depth in frame E
Nvector(self, \*args, \*\*kwds)	Geographical position given as n-vector and depth in frame E
__init__(self[, a, f, name, axes])	x.__init__(…) initializes x; see help(type(x)) for signature
direct(self, lat_a, lon_a, azimuth, distance)	Return position B computed from position A, distance and azimuth.
inverse(self, lat_a, lon_a, lat_b, lon_b[, …])	Return ellipsoidal distance between positions as well as the direction.