[Gmsh] extracting boundary

[Christophe Geuzaine]

On 15 Nov 2012, at 19:16, Oluwaseun Sharomi <oluwaseun.sharomi at usask.ca> wrote:

> Hello,
> 
> I created a 2D slice from a 3D Geometry using paraview. I saved the slice into a Legacy file format. I was able to open it in gmsh.
> 
> The problem I'm having is that the 2D file has no boundary markers in it. I also noticed that if I use Reclassify2D in gmsh, it allows me to view the boundary.
> 
> My question is this: Is there a way to save the boundary points into a seperate file or How else can I deal with the files (vtk and msh file attached so that the boundary points are included.)
> 

Define only a Physical Line for the boundary lines: when saving the .msh Gmsh will ignore all other elements.


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