Karl, Thank you very much. The links really help me.
Makoto 2012/10/25 Karl König <[email protected]> > 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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