anticlockwise rotation in .bioMod

[MennatallahRihan]

Hello!
I was wondering if there is any way to set the rotation of specific segments in the bioMod file to rotate anticlockwise. Maybe something like rotation -y. (but this line doesn't work)
Is this something implemented in biorbd or is there a workaround?

Thanks!

[pariterre]

Hi @MennatallahRihan
It is indeed not possible to reverse the direction of the rotation, there as design choices we made that would make this highly difficult to maintain. The main workaround is to prepare a sign vector and multiply the output of biorbd. That said, I would strongly suggest not doing that and simply accept that the sign are opposite sometimes and only swap the sign at the very end when producing figures and tables.