[vtkusers] CGNS

[Gerard Gorman]

Berk Geveci wrote:
> I started writing one a few months ago but couldn't get far
> since I ran out of time. I know that someone has one that
> supports part of the cgns format. Were you planning to write one?
(warning: long winded reply to simple question) I have been looking into 
various file formats looking for something standard, useful for 
unstructured meshes and flexible enough to be used  with a numerical 
code (eg. finite element/volume). I had looked at the HDF5 Mesh API but 
it looks like an abandoned project. Also, a problem with its design is 
that it doesn't provide a way to define groups of nodes/elements which 
could be used to specify boundary conditions (eg. how hot a wall is). 
After a some more searching I found CGNS (who I believe are also 
planning to introduce HDF5 internally). So far it looks  like what I 
want and yes, if I can't find a ready made reader for it in my favorite 
visualization toolkit then I would plan to write one me self, which 
leads me to your next point...

> I would like to know how popular cgns is. 
So would I - but we do know that there are some big interests behind 
this standard (eg. NASA). The problem is that there are more file 
formats than codes but this looks good.

Anyhow, I'm really interested in hearing what people have to say about this.

Cheers
g

> 
> On Tue, 2003-10-21 at 11:54, Gerard Gorman wrote:
> 
>>Has anyone written (or is planning to write) a reader for CGNS 
>>(http://www.cgns.org/)?
>>
>>Cheers
>>g
> 
> 
> 


-- 
----------------------------------------------------------
Gerard Gorman
Applied Modelling and Computation Group
Earth Science and Engineering
Imperial College
Prince Consort Road		Tel. 00 44 +207 594 9323
London SW7 2BP			Fax. 00 44 +207 594 9321
U.K.                    o~o A good slogan beats a good solution.
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