[vtkusers] Re: [Paraview] Re: Display of time dependent unstructured grid separating the pointdata and the grid definition?

[Antoine Dechaume]

I am interested too in the capability of storing the mesh once only,  
and all time dependent data in separate files, and in one of the vtk  
format.
I asked about this 1 month ago at vtkusers mailling list, Berk posted  
the trick to save data in individual vtk files as vtkDataObject and  
then merge the attributes with the geometry using  
vtkMergeDataObjectFilter. But unfortunately Paraview can't load such  
vtkDataObject files.

Boolegue.


On 22-Feb-08, at 7:36 AM, Berk Geveci wrote:

> It actually is (sort of :-). First of all, the vtu format supports
> multiple time steps in the same file. Unfortunately, this feature is
> not well documented. Mathieu is the original author, maybe he'll
> remember how it works.
> Second, Kent has modifications to the paraview source that allows vtu
> files to share the mesh when loading pvd files. I didn't have the time
> to look at his patch and incorporate it into paraview yet.
>
> -berk
>
> On 2/21/08, Alessandro Bellina <bellina at uiuc.edu> wrote:
>> Hi,
>> So basically the VTU format is not capable of this method?
>>
>> Thanks for your reply
>>
>>
>> Alessandro
>>
>>
>> On Thu, Feb 21, 2008 at 2:33 PM, montesino
>> <Stephane.Montesino at hmg.inpg.fr> wrote:
>>> Try the Ensight Gold File format, the mesh and the data are in 2  
>>> different
>>> files and an ascii file (.case) the name of the files and the  
>>> variable
>>>
>>> FORMAT
>>> type: ensight gold
>>>
>>> GEOMETRY
>>> model:     Electrodes-channel-**********.geo
>>>
>>> VARIABLE
>>> scalar per element: Electric_Polarity
>>> Electric_Polarity-Electrodes-channel-001-**********.scl
>>>
>>> TIME
>>> time set: 1
>>> number of steps:     8
>>> filename start number:         1
>>> filename increment:   1
>>> time values:
>>>          1.000
>>>          2.000
>>>          3.000
>>>          4.000
>>>          5.000
>>>          6.000
>>>          7.000
>>>          8.000
>>>
>>> Stéphane Montesino
>>>
>>>
>>> hello all,
>>> First of all, I have been using ParaView this year for grad work and
>>> it has really sped things up for me. Great tool!
>>>
>>> I am trying to visualize about 200 timesteps (using pvd  
>>> collection) of
>>> a 50,000 node unstructure grid FEM.  As far I as I understand it, I
>>> need to include in every vtu file (each timestep) both the mesh
>>> definition (i.e. node coords, connectivity, offsets, etc) and
>>> obviously the actual pointdata for that timestep. Now, this is  
>>> taking
>>> a little bit of time and was wondering if I could simplify this by
>>> breaking the mesh definition and point data into two different files
>>> somehow. I need my model to grow to millions of nodes!
>>>
>>> Thank you,
>>>
>>> Alessandro
>>>
>>>
>> _______________________________________________
>> ParaView mailing list
>> ParaView at paraview.org
>> http://www.paraview.org/mailman/listinfo/paraview
>>
> _______________________________________________
> This is the private VTK discussion list.
> Please keep messages on-topic. Check the FAQ at: http://www.vtk.org/Wiki/VTK_FAQ
> Follow this link to subscribe/unsubscribe:
> http://www.vtk.org/mailman/listinfo/vtkusers