[Dune] Dune Digest, Vol 108, Issue 9

[Christian Engwer]

Hi Andreas,

> My question is now:
> does the gmsh reader store the boundary ds that it obtained from the
> gmsh file and does it have some method so that the user can extract
> them after grid creation
> something like gmshreader.boundaryData( intersection ) or whatever.

The gmsh reader read not only the mesh, but also a vector of ids,
associating these ids to the boundarysegementindex.

you can ascces the information using 
id_vector[intersection.boundarySegmentIndex()]
(recalling from memory)

Christian