[Gmsh] Bug report.

[Christophe Geuzaine]

Luca Heltai wrote:
> Dear Gmsh authors,
> 
> thanks for the very nice application that you provided! It has proved  
> very useful, and I am using it in my daily research.
> 
> I wrote an interface to read and write the Gmsh format for the  
> deal.II finite element library, and while I was playing around today,  
> I noticed an anomaly (at least in the version of gmsh for Mac OS X).
> 
> Reading the following mesh works ok, but if I turn on the  
> visualization of the physical groups on the lines (which should give  
> me 2,1,3), gmsh will only show 3 for each line element, unless I also  
> change the elementary entity on each of the line.
> Is this a feature or a bug?
> 


Hi Luca - It's a feature: physical groups are meant to be "groups of
elementary entities". So you cannot have the mesh of a single elementary
entity split into 3 physical groups. If you want to split the mesh of an
elementary entity, you should use a mesh partition (available in the 
.msh file format version 2).

Christophe


> I'm using version 2.0.1.
> 
> Thanks very much in advance!
> 
> Luca.
> 
> 
> $NOD
> 4
> 1  0 0 0
> 2  1 0 0
> 3  0 1 0
> 4  1 1 0
> $ENDNOD
> $ELM
> 4
> 1 3 1 0 4 1 2 4 3
> 2 1 2 1 2 2 1
> 3 1 1 1 2 4 2
> 4 1 3 1 2 3 4
> $ENDELM
> 
> 
> --
> Luca Heltai <luca.heltai at unipv.it>
> http://www-dimat.unipv.it/heltai
> University of Pavia, Dep. of Mathematics
> Phone : +39 0382 98 5680, Office: A10
> --
> There are no answers, only cross references.
> 
> 
> 
> _______________________________________________
> gmsh mailing list
> gmsh at geuz.org
> http://www.geuz.org/mailman/listinfo/gmsh
> 
> 


-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine