Utilities
Interesting and useful applications of {nvctr}

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

R_EL2n_E()
 Find nvector from the rotation matrix (direction cosine matrix)
R_EL

R_EN2n_E()
 Find nvector from R_E

R_Ee()
 Select the axes of the coordinate frame E

lat_lon2n_E()
 Convert (geodetic) latitude and longitude to nvector

n_E2R_EN()
 Find the rotation matrix R_EN from nvector

n_E2lat_lon()
 Convert nvector to latitude and longitude

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 nvector to cartesian position vector in meters

n_E_and_wa2R_EL()
 Find
R_EL
from nvector and wander azimuth angle

nvctr
 nvctr: nonsingular geographical position calculations

p_EB_E2n_EB_E()
 Convert cartesian position vector in meters to nvector

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.

deg()
 Convert angle in radians to degrees

rad()
 Convert angle in degrees to radians.

unit()
 Make input vector unit length, i.e. norm == 1