[Libmesh-users] GmshIO class additional functionality

[Vijay S. M. <vi...@gm...>]

Hi,

I have been using Gmsh to generate my multi-dimensional mesh files and
was delighted to find that libMesh supports the format. I eventually
realized though that the material numbers were not accounted for or
stored anywhere even though specified in the input msh file. And I had
to dig into the code and eventually modified the GmshIO class to
include these data and store it in a MeshData object based on the same
concepts from UNVIO class.

I have attached the patch and a sample test code along with the mail.
I would appreciate it if you can include this code in the current
developer version so that I do not have to maintain this separately
and worry about losing changes every time I update my codebase. Please
do verify that there are no bugs in the modifications also. Also, I
hope that other people will find this functionality useful since the
.unv file generation from Gmsh has its own issues and this IMO is a
little cleaner way of passing physical and elementary data to the end
user along with arbitrary number of attributes/element.

I am also interested in knowing how others have been passing the
material data from the mesh to the code for multi-region problems. Do
let me know if you have any comments.

Cheers,
Vijay