Hello. this is a question regarding the legacy dolfin. I want to adopt some of my code to DOLFINX, in order to monitor the change I want to see the elements of the matrix, so I just want to ask what is the easist way to print a matrix in Legacy dolfin, say I have a bilinear form: a = (inner(grad(u…

Use A=dolfinx.fem.assemble_matrix(dolfinx.fem.form(a)) and then use either https://docs.fenicsproject.org/dolfinx/v0.7.3/python/generated/dolfinx.la.html#dolfinx.la.MatrixCSR.to_dense or https://docs.fenicsproject.org/dolfinx/v0.7.3/python/generated/dolfinx.la.html#dolfinx.la.MatrixCSR.to_scipy

No I mean in the Legacy DOLFIN, not DOLFINX

What is the easy way to view a matrix in Legacy DOLFIN

Legacy DOLFIN

dokken April 3, 2024, 1:17pm 4

This has already been answered at: How to access print assembled matrix from variational form - #2 by dokken

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What is the easy way to view a matrix in Legacy DOLFIN

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