EV2DCM {RSpincalc}

Convert from Euler Vectors to Direction Cosine Matrix

Description

EV2DCM converts from Euler Vectors (EV) to Direction Cosine Matrix (DCM).

Usage

EV2DCM(EV, tol = 10 * .Machine$double.eps, ichk = FALSE, ignoreAllChk = FALSE)

Arguments

EV

Euler Vectors (EV) vector [m1, m2, m3, MU].

tol

Tolerance from deviations from unity for the determinant of rotation matrices or the the vector length for unitary vectors.

ichk

Logical, FALSE=disables near-singularity warnings.

ignoreAllChk

Logical, TRUE=disables all warnings and error checks (use with caution!).

Value

Direction Cosine Matrix (DCM) 3x3xN.

Author(s)

Jose Gama

References

by John Fuller, 14 Jul 2008 SpinCalc, Function to Convert between DCM, Euler angles, Quaternions, and Euler vectors. http://www.mathworks.com/matlabcentral/fileexchange/20696-function-to-convert-between-dcm–euler-angles–quaternions–and-euler-vectors

Paolo de Leva, 01 May 2013 SpinConv, Conversion from a rotation representation type to another. http://www.mathworks.com/matlabcentral/fileexchange/41562-spinconv

See Also

DCM2EV

Examples

EV <- c(-0.1995301, -0.8765382, -0.4380279, 114.4324 * (pi/180))
EV2DCM(EV,1e-7)
#EV2DCM(EV)