[Getfem-users] nodal contact problem

[Hojae Yi]

Hello,

First of all, thank you so much for a great FEA package!

I am currently using GetFEM 5.1 using Python. I have been toying with 
provided 'demo_wheel_contact.py' and trying to apply 
add_nodal_contact_between_nonmatching_meshes_brick using two contact 
surfaces. However, when I run, it complains that rg1 (and rg2) should be 
a string. Python Interface reference explains that rg1 and rg2 as 
integers while User Document explains them as vectors.

Can someone kindly point me where I can find further information on how 
these rg1 and rg2 should be defined? Let me know if any further details 
are needed.

Thank you very much!

Hojae