Difference between revisions of "Quat2anax.m"

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{{DISPLAYTITLE:quat2anax.m}} __NOTOC__
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#REDIRECT [[qter2anax.m]]
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Converts a quaternion representation of a rotation into angle-axis rotation parameters.
 
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==Syntax==
 
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    [rot_axis,rot_angle]=quat2anax(q)
 
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==Parameters==
 
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    q  -  quaternion, a structure with four fields
 
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            q.u, q.i, q.j, q.k giving the four compo-
 
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            nents of the quaternion
 
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==Outputs==
 
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    rot_axis  - cartesian direction vector as a row
 
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                with three real elements
 
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    rot_angle - rotation angle in radians
 
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==Notes==
 
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See the notes on [[rotation conventions]] for the basic definitions of rotations in ''Spinach''.
 
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==See also==
 
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[[euler2dcm.m]], [[wigner.m]], [[anax2quat.m]]
 
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''Version 2.3, authors: [[Ilya Kuprov]]''
 

Latest revision as of 09:29, 30 August 2026

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