[Paraview] extract voriticy and follow it in time

[Ufuk Utku Turuncoglu (BE)]

Thanks Andy. I could try to implement a Programmable filter because even 
if i able to use Threshold filter it is hard to track multiple region 
produced by Threshold filter separately.

--ufuk

On 23.04.2018 09:54, Andy Bauer wrote:
> Hi Ufuk,
>
> The threshold filter operates on scalar/single component arrays only. 
> Also, underneath the covers it operates on cell data exclusively so if 
> you request thresholding on point data it will do a point data to cell 
> data operation as well.
>
> I'm not aware of any filters in PV that would allow you to track a 
> thresholded quantity. Unfortunately I can't think of any moderately 
> easy way to do this in PV either.
>
> Best,
> Andy
>
> On Fri, Apr 20, 2018 at 4:40 PM, Ufuk Turuncoglu 
> <u.utku.turuncoglu at be.itu.edu.tr 
> <mailto:u.utku.turuncoglu at be.itu.edu.tr>> wrote:
>
>     I could have vorticty as a new variable by using PythonCalculator.
>     now, i need to follow points extracted from vorticity field in
>     time and create poly line. so, I tried particle tracer and
>     particle path bu no luck yet!
>
>     Regards,
>
>     --ufuk
>
>     ----- Original Message -----
>     From: "Ufuk Utku Turuncoglu (BE)" <u.utku.turuncoglu at be.itu.edu.tr
>     <mailto:u.utku.turuncoglu at be.itu.edu.tr>>
>     To: "paraview" <paraview at paraview.org <mailto:paraview at paraview.org>>
>     Sent: Friday, April 20, 2018 3:09:35 PM
>     Subject: [Paraview] extract voriticy and follow it in time
>
>     Hi,
>
>     I would like to use Threshold filter for Vorticity field
>     calculated by
>     ComputeDreivatives but in the variables list i could not see
>     Vorticity
>     field. So, is it possible to do it with any other way such as
>     programmable filter etc. If i extract it from the whole data, then, i
>     would like to follow it to create polyline that represent path of the
>     selected region. So, is there any simple way to do that?
>
>     Best Regards,
>
>     --ufuk
>
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