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[Jan Stránský <question455796@xxxxxxxxxxxxxxxxxxxxx>]

Question #455796 on Yade changed:
https://answers.launchpad.net/yade/+question/455796

    Status: Open => Answered

Jan Stránský proposed the following answer:
Hi Jabrane,

Is it possible to have the information about particles and contact (force,
> momentum, velocity, stiffenesses etc...) in a specific area of a numerical
> sample ?


of course:
forcesInCertainArea = [O.forces.f(b.id) for b in O.bodies if b.state.pos[2]
> 1.5] # to get forces from bodies with z coordinate > 1.5
avgForce = sum(forcesInCertainArea,Vector3.Zero) / len(forcesInCertainArea
# to average them

To get better answer about energies, please provide a MWE or specify more
in detail how you compute energy ("globally" does not really says much. Do
you use your own functions in Python? O.energy[...]?
Law2.someKindOfEnergy()? ......).

cheers
Jan

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