RSpincalc (version 1.0.2)

EA2EA: Convert from Euler Angles to Euler Angles

Description

EA2EA converts from Euler Angles (EA) to Euler Angles (EA).

Usage

EA2EA(EA, EulerOrder1='zyx', EulerOrder2='zyx', tol = 10 * .Machine$double.eps, 
ichk = FALSE, ignoreAllChk = FALSE)

Arguments

EA

Euler Angles (EA) vector [psi, theta, phi].

EulerOrder1

Euler Order 1 (xyx, yzy, zxz, xzx, yxy, zyz, xyz, yzx, zxy, xzy, yxz, zyx)

EulerOrder2

Euler Order 2 (xyx, yzy, zxz, xzx, yxy, zyz, xyz, yzx, zxy, xzy, yxz, zyx)

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

Euler Angles (EA) vector [psi, theta, phi].

Details

Euler Angles (EA) xyz <=> x(roll) y(pitch) z(yaw) Type 1 Rotations (Tait-Bryan angles): xyz - xzy - yxz - yzx - zyx - zxy Singular if second rotation angle is -90 or 90 degrees. Type 2 Rotations (proper Euler angles): xyx - xzx - yxy - yzy - zxz - zyz Singular if second rotation angle is 0 or 180 degrees.

Euler angles [psi, theta, phi] range from -90 to 90 degrees. Tait-Bryan angles [psi, theta, phi] range from 0 to 180 degrees. Angles about Euler vectors range from 0 to 180 degrees.

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

EA2DCM, EA2Q, EA2EV

Examples

## Not run: 
# EAxyx <- c(-170.6607, 110.937, 136.2344)
# EA2EA(EAxyx,'xyx','xyz')
# EA2EA(EAxyx,'xyx','xzy')
# EA2EA(EAxyx,'xyx','yzx')
# EA2EA(EAxyx,'xyx','yxz')
# EA2EA(EAxyx,'xyx','zxy')
# EA2EA(EAxyx,'xyx','zyx')
# EA2EA(EAxyx,'xyx','xzx')
# EA2EA(EAxyx,'xyx','yxy')
# EA2EA(EAxyx,'xyx','yzy')
# EA2EA(EAxyx,'xyx','zxz')
# EA2EA(EAxyx,'xyx','zyz')
# ## End(Not run)