[Gmsh] Merging VTK or STL surfaces: unknow surfaces and missing boundaries

[Vincent Libertiaux]

Hi everyone,

I figured out what my problem was: one of the STL file was mis-written and
was empty.  I changed it and now everything is working fine !

Best regards,

V.


2014-03-12 17:34 GMT-05:00 Vincent Thierry Libertiaux <vlib at uab.edu>:

>  Greetings to the gmsh community,
>
> First of all, I would like to thank Mr Geuzaine and Remacle, and all the
> other contributors, for the constant development of the software and the
> great support to the community !
>
> I am back using gmsh after advocating using it as our main mesher when I
> was working at the University of Liege a few years ago !
>
> Here is the description of my problem:  I used vtk to produce surface
> meshes of different eye tissues.  Those meshes can be either in the vtk or
> stl format.  I then created a geo file for both type of format and run gmsh
> 2.8 from the command line with the -3 and -order 2 options.
>
> When I use the vtk files, I obtain what looks like a satisfactory result.
> However, when I look a the .msh file, the information relative to the
> physical surfaces/volumes is lost: it always puts the first label of my
> surface/volume list.
>
> When I use the stl files, it looks like the physical surfaces labels are
> correct, as is the first physical volume label, but I think that only this
> one is meshed (I have 5 volumes).
>
> In both cases, I have an error when I load the file indicating "unknown
> surface".  This happens only once for the stl files, and it is always the
> last one that is incriminated; and multiple times in the case of the vtk
> files.
>
> I researched for that kind of problem in the archives but unsuccessfully.
>
> I hope that someone will be able to help me with that issue.
>
> I joined all the files needed to make some tests.
>
> I thank you very much in advance,
>
> Best regards,
>
> Vincent
>
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