[Paraview] Writing Binary files

[N Harrison]

Hi Renato N. Elias,

Thanks very much for all that information. I do seem to have more success
with the EnSight that I do with XML. Thanks very much for your advice on
this!
Yeah I'm reckon PV support for the unformatted files would open up more
options for us all!  :-)

Kind regards,
 

Noel




-----Original Message-----
From: Renato N. Elias [mailto:rnelias at nacad.ufrj.br] 
Sent: 21 February 2006 13:37
To: 'N Harrison'
Cc: paraview at paraview.org
Subject: RES: [Paraview] Writing Binary files



Hi Harrison,

It's hard to say about which file format is the best. It'll depend on your
application and your skills to implement it. I basically work with Ensight's
format because, I guess, this format is very easy to understand, implement
and I can also use my files with Ensight and PV without having to change
nothing in my program. 

Regarding the binary implementation, I could say that Ensight's binary is an
"ASCII file" opened as binary and without any format in the writing clause
(see the routines previously posted here by me
http://www.nacad.ufrj.br/~rnelias/public/EnsightFortranRoutines.zip,
Stephane and Sam). If you've been working with huge models certainly you'll
need to save your files in binary format or going further doing parallel
post processing. Regarding Fortran binary files, since PV can't read
unformatted files (it's only possible taking the approach proposed by
Stephane) you'll need to care about the binary Fortran form supported by
your compiler ("binary" or "unformatted") or wait the PV team give support
for unformatted files in PV's future releases ;-)

Regards

Renato N. Elias
===============================================
PhD student - http://www.nacad.ufrj.br/~rnelias
High Performance Computing Center
Federal University of Rio de Janeiro
Rio de Janeiro, Brazil
+55(21) 2562-8080


-----Mensagem original-----
De: paraview-bounces+rnelias=nacad.ufrj.br at paraview.org
[mailto:paraview-bounces+rnelias=nacad.ufrj.br at paraview.org] Em nome de N
Harrison
Enviada em: segunda-feira, 20 de fevereiro de 2006 08:45
Para: paraview at paraview.org
Assunto: [Paraview] Writing Binary files

Sam,Stephane,Renato
Thanks very much for your information to date. Seeing as you have tried
using VTK-XML and Ensight file format, which type would you recommend using
for large models? I am generating large models at the moment using FORTRAN
90 to create legacy ASCII VTK files and they are getting quite large. I have
started to write them in a binary format  because of their small file size.
I don't have any experience yet of XML or Ensight, what are their main
advantages/disadvantages in your opinion for displaying large models? Quite
a lot of information has been posted lately on this mailing service about
creating Ensight files, including your own responses (very helpful), so I
just wanted to see if this format was recommended over binary XML files.

Kind regards,
Noel


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