I have a mesh file with values at each node. I can load the mesh into a getfem::mesh but when I apply P1 shape function to
the linked getfem::mesh_fem, the node are renumberer. How can I use the value in
the file in this case? I have seen interpolate function and interpolate
mesh but they do not correspond to what I want to do. Should I hack the
lib to make the renumbering optional, or to save it somewhere? or do you
see a better method? I suppose I could also traverse all the element and
try to find the renumbering afterward by matching coordinate, but it
seen a waste of computationnal time.
This seems like a standard operation to me, surely there is already
something available?