Hello there, Given some index i that I use to get the position on a mesh: x = mesh.coordinates()[i], is there a way to find out the index j (indices for non-scalar functions) such that u.vector()[j] = u(x)? from dolfin import * f = Expression('sin(x[0])*cos(x[1])', degree=2) mesh = UnitSquare…

Mapping from mesh.coordinates() to u.vector()

dokken February 10, 2021, 12:26pm 2

You can use the vertex_to_dof_map function, as used here: Bitbucket

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