The n-vector Approach to Geographical Position Calculations using an Ellipsoidal Model of Earth

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Documentation for package ‘nvctr’ version 0.1.4

• DESCRIPTION file.
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nvctr-package	nvctr: non-singular geographical position calculations
along_track_distance	Compute the along-track distance from a great circle arc
altitude_azimuth_distance	Calculate the altitude, azimuth and distance of B from A
cross_track_distance	Compute the cross-track distance from a great circle arc
cross_track_intersection	Calculate cross-track intersection
deg	Convert angle in radians to degrees
lat_lon2n_E	Convert (geodetic) latitude and longitude to n-vector
nvctr	nvctr: non-singular geographical position calculations
n_E2lat_lon	Convert n-vector to latitude and longitude
n_E2R_EN	Find the rotation matrix R_EN from n-vector
n_EA_E_and_n_EB_E2p_AB_E	Find the delta position from two positions A and B
n_EA_E_and_p_AB_E2n_EB_E	Find position B from position A and delta
n_EB_E2p_EB_E	Convert n-vector to cartesian position vector in meters
n_E_and_wa2R_EL	Find 'R_EL' from n-vector and wander azimuth angle
p_EB_E2n_EB_E	Convert cartesian position vector in meters to n-vector
R2xyz	Find the three rotation angles about new axes in the xyz order from a rotation matrix
R2zyx	Find the three angles about new axes in the zyx order from a rotation matrix
rad	Convert angle in degrees to radians.
R_Ee	Select the axes of the coordinate frame E
R_EL2n_E	Find n-vector from the rotation matrix (direction cosine matrix) 'R_EL'
R_EN2n_E	Find n-vector from R_E
unit	Make input vector unit length, i.e. norm == 1
xyz2R	Create a rotation matrix from 3 angles about new axes in the xyz order.
zyx2R	Create a rotation matrix from 3 angles about new axes in the zyx order.