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[Jan Stránský <question692998@xxxxxxxxxxxxxxxxxxxxx>]

Question #692998 on Yade changed:
https://answers.launchpad.net/yade/+question/692998

    Status: Open => Answered

Jan Stránský proposed the following answer:
> What does the eigenvector corresponding to the maximum moment of
inertia of clump mean?

It is the orientation (unit direction vector) of principle axis
corresponding to the maximum moment of inertia

Note that, the principle axis corresponding to minimum (not maximum)
moment of inertia would normally be closest to the "longest axis".

> and Is this eigenvector independent of the global coordinate system or
the local coordinate system?

It is a vector. As such, it is independent of any coordinate system.

But once again note that principle axes of inertia has no direct
relation to the "longest axis".

cheers
Jan

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