I need to assign data from a mat file to a fem.Function, so that I can use it as the initial condition for my solver. I don’t know how to ensure that the values from my mat file are read in in the correct order, as I understand that the ordering of vertices in the mesh doesn’t correspond to the ord…

Consider something like the following code: from mpi4py import MPI import numpy as np import ufl from dolfinx import fem, mesh, io L = 2 W= 3 nx = 3 ny = 5 nz = 7 msh = mesh.create_box(comm=MPI.COMM_WORLD, points=((0.0, 0.0, 0.), (L, L, W)), n=(nx-1, ny-1, nz-1), …

Hi @dokken , thanks for the quick answer! Unfortunately I’m quite new to FEniCS so I’m struggling to understand your code and apply it to my case. My main questions are: How do I apply this to my case, ie to the case of having data in a matrix loaded in from a mat file, which I want to assign to t…

Thank you so much, I really appreciate it!

Assigning values to function: order issues

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dokken May 17, 2023, 4:10pm 2

See: Application of point forces, mapping vertex indices to corresponding DOFs - #2 by dokken

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Assigning values to function: order issues

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