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[Jérôme Duriez <question622864@xxxxxxxxxxxxxxxxxxxxx>]

Question #622864 on Yade changed:
https://answers.launchpad.net/yade/+question/622864

    Status: Open => Answered

Jérôme Duriez proposed the following answer:
Hello,

1) Yes, this is correct (the order as well), see source code [1] to be sure. 
As a personal remark, note that such recording engines are probably less useful in YADE now that such kind of data can be easily accessed and saved through Python [2]. 
(Obviously, you may still use them though, if you're OK to spend time to know how these engines work)

3) The ForceRecorder is able to deal with several YADE bodies through its ids attribute [3], see also source code [1] to check that a cumulative value is stored.
Provided you know which (and how many) YADE bodies are created when you import this "mesh file", and that you correctly define this ids attribute, you should be able to do everything you want here.

Jerome

PS: I would recommend you open different Launchpad questions when you
have different questions, 2) being here quite distinct from 1)/3)

[1] https://github.com/yade/trunk/blob/e4e757f2e98a620e3177b7a36a1d10f69f6a6a28/pkg/dem/ForceTorqueRecorder.cpp#L14
[2] https://yade-dem.org/doc/tutorial-data-mining.html
[3] https://yade-dem.org/doc/yade.wrapper.html?highlight=forcerecorder#yade.wrapper.ForceRecorder.ids

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