[Gmsh] MeshFormat Version number

[Christophe Geuzaine]

Geordie McBain wrote:
> On Mon, Aug 31, 2009 at 11:07 AM, Rui Maciel<rui.maciel at gmail.com> wrote:
>> Does anyone know what changed between the previous and the new file format
>> version?
> 
> The motivation,according to doc/VERSIONS.txt is `bumped mesh version
> format to 2.1
> (small change in the $PhysicalNames section, where the group dimension
> is now required)'.
> 

Exactly: it's a very small change, only affecting the optional 
$PhysicalNames/$EndPhysicalNames section.

The problem was that with version 2, we did not save a dimension (0D, 
1D, 2D or 3D) together with the name. Hence we could not guarantee a 
one-to-one mapping between physical names and physical numbers. Indeed, 
  physical numbers need only to be unique per dimension (you can have 
Physical Point(1) and Physical Line(1)).




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