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Given a 3 x 3 rotation matrix, the angle and the axis of rotation are calculated.
Arotation(A)
A list including:
The angle of rotation expressed in degrees.
The axis of rotation. A vector of two components, latitude and longitude, expressed in degrees.
A 3 x 3 rotation matrix.
Michail Tsagris.
R implementation and documentation: Michail Tsagris mtsagris@uoc.gr and Giorgos Athineou <gioathineou@gmail.com>.
If the user does not supply a rotation matrix a message will appear.
Course webpage of Howard E. Haber. http://scipp.ucsc.edu/~haber/ph216/rotation_12.pdf
Ted Chang (1986). Spherical Regression. Annals of Statistics, 14(3): 907--924.
rot.matrix, rotation, rsop
ksi <- c(25.31, 24.29) theta <- 2.38 A <- rot.matrix(ksi, theta, rads = FALSE) A Arotation(A)
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