How to get permutation matrix?

ronghong · June 22, 2019, 7:48am

Hi all,
When I use parameters['reorder_dofs_serial'] = True, I get a stiffness matrix.
And do not use parameters['reorder_dofs_serial'] = True, I get another stiffness matrix.
So how to obtain the permutation matrix between the two matrices?

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How to get permutation matrix?

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