[Paraview] Export of time-dependent data

[Utkarsh Ayachit]

Ah ok. Unfortunately, writers don't allow you to choose the quantities
to write. So an option would be write the full data out with the
derived quantities and then read back only the derived quantity you
are interested in.

Utkarsh

On Mon, Mar 14, 2011 at 11:10 AM, Martin Vymazal
<martin.vymazal at vki.ac.be> wrote:
> Hi Utkarsh,
>
>  let's say that my data set contains quantities a0,a1,a2,a3. I need to
> compute
> quantity bn by creating a (long) pipeline with a series of intermediate
> steps, where:
>
> b1 = function(a0,a1,a2,a3)
> b2 = function(b1,...)
> b3 = function(b2,b1,...)
>   ...
>
> bn = function(b_n-1,...)
>
> Reading only those quantities (bn) that I wish to plot is exactly what I
> would like to do. Unfortunately, they're not contained in the original file
> and I need to create this extra data set first. The question is: can
> paraview generate such an output file which stores these quantities? I
> prefer to wait at the beginning and let paraview write a new dataset instead
> of waiting every time I click and the pipeline is re-executed.
>
>  Best regards,
>
>   Martin
>
>
>
> Quoting Utkarsh Ayachit <utkarsh.ayachit at kitware.com>:
>
>> Martin,
>>
>> You should also be able to choose only the quantities you want to load
>> from the reader panel itself. Doesn't that help with performance. If
>> not, I don't think saving out new file with fewer quantities would
>> make much different either.
>>
>> Utkarsh
>>
>> On Sun, Mar 13, 2011 at 7:26 AM, Martin Vymazal
>> <martin.vymazal at vki.ac.be> wrote:
>>>
>>> Hello,
>>>
>>>  I have rather a large output (xdmf format) of an unsteady CFD
>>> simulation. I
>>> need to compute some other quantities in the computational domain which
>>> are
>>> a function of the variables stored in the original dataset. I created a
>>> pipeline, which works fine but is a bit slow to execute every time I want
>>> to
>>> obtain a plot for a new time step.
>>>  Is it possible to select only certain quantities from my pipeline and
>>> save
>>> them for all time steps (along with the mesh itself) in a new hdf/xdmf
>>> file?
>>> Thank you.
>>>
>>>  Best regards,
>>>
>>>  Martin Vymazal
>>>
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>
>
>
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