Hello, I believe this is a simple question but have not found a solution. I have a fem.Function with a vector function space and I am trying to interpolate a constant value onto one of the subspaces. In this attempt, I get a long error message (pasted below) and the kernel keeps running, producing …

[image] dg0609: fem.Constant(domain, PETSc.ScalarType(1)) If you want to interpolate a constant you could either: # Map from a sub function (cheap, but only works for constants) Wx, map_to_W = W.sub(0).collapse() ux = dolfinx.fem.Function(V) ux.x.set(1) u.x.array[map_to_W] = ux.x.array # Map…

Error interpolating on sub of vector function

dolfinx

dokken February 1, 2023, 7:35pm 4

I cannot reproduce this with dolfinx v0.6.0. This has been fixed in `dolfinx.fem.Expression` containing only a `dolfinx.fem.Constant` fails · Issue #2342 · FEniCS/dolfinx · GitHub

Time dependent Dirichlet and Neumann BCs

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Error interpolating on sub of vector function

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