[Getfem-users] defining diffusion coefficients

[marco trevisan]

Hello,
I am working wit the Matlab interface on a simple diffusion-transport
problem on a rectangular domain. I am using a rectangular mesh and Q1
elements, so the nodes of the mesh and the dofs are the same quantity.
Since the diffusion coefficient A is not constant but varies strongly
within a specified "path" in the domain, I would like to know if there
is a method of defining this coefficient as a scalar function or
matrix over the domain and then converting it to a convenient object (
which, I suppose, is a vector of size [ 1 , number_of_dof ] ) .

Thank you in advance

Marco Trevisan