How to get the quaternions from coordinates in body and space framesgreenspun.com : LUSENET : quaternions : One Thread
I have molecule coordinates in body-frame and in space-frame, but i need calculate the quaternions that related both systems, how do you get the queternions?
-- Florianne Castillo (firstname.lastname@example.org), August 01, 2003
There is no universally agreed on way to define a body-frame or space-frame. It is rare to find two books that define Euler angles the same way.
There is a good paper on the topic of swtiching between 3D systems and quaternions available at my web site. The paper requires a careful read, but it should address the question.
-- Douglas Sweetser (email@example.com), August 03, 2003.