[Gmsh] Gmsh file format version 2.0/2.1 confusions as saved by Save As...?
Fabio Sacconi
sacconi at ing.uniroma2.it
Mon Nov 23 15:38:37 CET 2009
Hi,
I think this is a little bug:
since the mesh format is changed from previous versions, even
if the change is just the dimension info in $PhysicalNames, I
think it would be better to change the MeshFormat in the .msh
file too, to 2.1.
This would help a lot in the parsing of the mesh file for
reading into an external code.
Thank you in advance.
Bye
Fabio
> Hi,
>
> When I do with versions 2.4.2 and 2.4.3-svn as of today
>
> 1. start gmsh, load any .geo file, create mesh
> 2. File -> Save As..
> 3. choose Gmsh mesh (*.msh), enter file name, OK
> 4. choose Version 2.0 ASCII, OK
>
> Then the created .msh file does have the version 2.0 identifier in the
> $MeshFormat section but has extra dimension information that should be
> a new extension in 2.1 format in the $PhysicalNames section
>
> $MeshFormat
> 2 0 8
> $EndMeshFormat
> $PhysicalNames
> 2
> 2 1 "Surfaces"
> 3 2 "Volume"
> $EndPhysicalNames
>
> . Furthermore, if I choose Version 2.0 Binary instead, gmsh writes
>
> $MeshFormat
> 2.1 0 8
> $EndMeshFormat
> $PhysicalNames
> 2
> 2 1 "Surfaces"
> 3 2 "Volume"
> $EndPhysicalNames
>
> which seems valid this time, but contradicts with the "Version 2.0"
> menu item description.
>
> I see the behavior not only with the .geo files but with imported mesh
> files (at least) in MED format. Is this intended?
>
> Thanks,
> Takuya
>
> Takuya OSHIMA, Ph.D.
> Faculty of Engineering, Niigata University
> 8050 Ikarashi-Ninocho, Nishi-ku, Niigata, 950-2181, JAPAN
>
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>
>
--
Ing. Fabio Sacconi
Dip. Ing. Elettronica
Universita' di Roma II - Tor Vergata
Via del Politecnico, 1 - 00133 Roma
Tel. +39-06-72597781
Fax +39-06-2020519
E-mail : sacconi at ing.uniroma2.it