yade-dev team mailing list archive

[Anton Gladky <gladky.anton@xxxxxxxxx>]

We discussed it and decided, that WM3 calculates eigenDecomposition wrongly,
as I remember:

http://www.mail-archive.com/yade-dev@xxxxxxxxxxxxxxxxxxx/msg02718.html
http://www.mail-archive.com/yade-dev@xxxxxxxxxxxxxxxxxxx/msg02884.html

Maybe here too
http://www.mail-archive.com/yade-dev@xxxxxxxxxxxxxxxxxxx/msg02609.html

______________________________

Anton Gladkyy


2010/5/14 Václav Šmilauer <eudoxos@xxxxxxxx>

> Yes, I know they are straight. Their relative position is computed
> wrong, which seems to come from different rotation matrix ordering from
> Eigen in lib/base/Math.hpp, function matrixEigenDecomposition.
> https://bugs.launchpad.net/yade/+bug/577581
>
> If you could compare in depth (by source) what wm3 and eigen computes,
> that would be great. (BTW eigen has excellent docs, you don't have to go
> to sources for that one, I think: http://eigen.tuxfamily.org)
>
> Cheers, v.
>
>
>
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