[Gmsh] [Freefempp] Import a 2D mesh

[Christophe Geuzaine]

Geordie McBain wrote:
> On Thu, Sep 3, 2009 at 5:56 AM, Christophe Geuzaine<cgeuzaine at ulg.ac.be> wrote:
>> Indeed, that should be easy. Currently we only save "Triangles",
>> "Quadrilaterals" and "Tetrahedra" in the MESH format. Is the format for the
>> edges similar? (What is the label?)
> 
>>From Frey (2001, p. 33, Section 7.2.1 `The mesh format', which I take
> to be the specification), the Edges block does look very much like the
> Vertices, Triangles, Quadrilaterals, and Tetrahedra blocks, viz.:
> 
> %<---
> Edges
> <n>
> <e11> <e21> <ref1>
> <e12> <e22> <ref2>
> ...
> <e1n> <e2n> <refn>
> %<---
> 
> where <n> is the number of edges, <e1i> and <e2i> are the identifiers
> of the terminal vertices of the i-th edge, and refi is its reference
> label.  (I suppose ultimately the latter should be the identifier of

Thanks for the explanation : we've just added this to the MESH writer.

> the Physical Line, but for present consistency with the triangles it
> should probably be the identifier of the elementary geometric identity
> - this was discussed 31 July  - 17 Aug. on the Gmsh list in the thread
> `New Mesh.BdfElementPID Option'.)
> 

OK.

Give tomorrow's nightly build a try: you should be able to save edges 
with either elementary, physical or parition tags.

Ch

> Reference:
> 
> Frey, P. J. (2001). MEDIT: An interactive mesh visualization software.
> Technical Report 253, INRIA, Rocquencourt.
> (PDF freely available from http://hal.inria.fr/inria-00069921/fr.)
> 
> _______________________________________________
> 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