Difference between revisions of "Quat2anax.m"
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rot_axis - cartesian direction vector as a row | rot_axis - cartesian direction vector as a row | ||
with three real elements | with three real elements | ||
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rot_angle - rotation angle in radians | rot_angle - rotation angle in radians | ||
Revision as of 14:38, 26 December 2018
Converts a quaternion into angle-axis rotation parameters.
Syntax
[rot_axis,rot_angle]=quat2anax(q)
Arguments
q - quaternion, a structure with four fields
q.u, q.i, q.j, q.k giving the four compo-
nents of the quaternion
Outputs
rot_axis - cartesian direction vector as a row
with three real elements
rot_angle - rotation angle in radians
Notes
See the notes on rotation conventions for the basic definitions of rotations in Spinach.
See also
euler2dcm.m, wigner.m, quat2dcm.m, dcm2quat.m, anax2quat.m
Version 2.3, authors: Ilya Kuprov
