[Paraview] Vorticity computation from separated velocity array

[中田拓馬]

Karl,

Thank you very much.  The links really help me.

Makoto


2012/10/25 Karl König <kkoenig11 at web.de>

> Makoto,
>
> Please see
> http://www.paraview.org/Wiki/Beginning_Filters#Calculator_filter and
>
> http://www.paraview.org/Wiki/Advanced_Tips_and_Tricks#Creating_vectors_from_2_or_3_scalars
> on how to combine velocity vector components into a 3-components vector.
>
> Karl
>
>
> 中田拓馬 wrote, On 24.10.2012 18:17:
> > Dear all,
> >
> > I am trying to compute vorticity from separated velocity vectors, but
> > pre-installed filter of paraview seems to require 3-components vector as
> > an input. Then, I have tried to use the "Python Calculator" filter to
> > construct it.  I put "hstack([VelocityX, VelocityY, VelocityZ])" into
> > the "Expression" field following the wiki.  However, it created just a
> > copy of VelocityX instead of 3-components vector.  How can I construct
> > 3-components array form separated velocity vectors?
> >
> > I have also tried to use the "Programmable Filter".  But, it has been
> > really difficult for me and I could not just extract the vector from the
> > input.  The vectors live in vtkUnstructuredGrid in a
> > vtkMultiBlockDataSet and there are no function to extract Point Data
> > form it.
> >
> > Regards,
> >
> > Makoto
>
>
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