[Paraview] Track massive particles over time, particle ID is known

[timcfagan .]

It seems strange that it's changing... The particles should move around but
their ID should remain the same. At least that's what I've found with the
vtk particle data I've used. If you're still stuck you I'd be happy to have
a look at a sample of your data and see if I can get it to work...

I haven't used the python utility actually so I can't help with that.

On Sun, Feb 8, 2015 at 1:39 AM, 303343023 <303343023 at qq.com> wrote:

> *Hi*
> *Thank you for your prompt reply.*
> *I have tried generate ids filter.However, the new generated id is
> changing every time step and it is hard for me to determine a threshhold.It
> is only at the beginning the particle I want to track locate all above z=0
> plane.*
> *The python utility in paraview seems to be very powerful. I now try to
> seek solution from it. It will be very appreciated if you have new ideas
> about this topic.*
> *Chenshu*
>
>
> ------------------ 原始邮件 ------------------
> *发件人:* "timcfagan .";<timcfagan at gmail.com>;
> *发送时间:* 2015年2月6日(星期五) 上午7:46
> *收件人:* ""<303343023 at qq.com>;
> *抄送:* "paraview"<paraview at paraview.org>;
> *主题:* Re: [Paraview] Track massive particles over time, particle ID is
> known
>
> I've tried to do the same thing Chenshu, this is how I ended up doing it:
>
> open vtk particle file
> generate ids (possibly apply it even if they already have ids)
> extract entire dataset with particles through
> threshold by generated ids for the particles you want
> (This can be done multiple times to select multiple sets of points, then
> append datasets to combine them to one)
> Temporal particles to pathlines
>
> Unfortunately I haven't found a better way to actually select the
> particles other than through selecting them by particle ids. Just
> extracting a selection doesn't work properly with the pathlines filter. But
> you can extract a selection and view their ids in spreadsheet form. I was
> doing this, writing it down and then applying the threshold. Also the
> generate id's filter was applying them in layers in z, so you may find
> thresholding for z>0 is easy as it might be one threshold in the id's. You
> just need to find the right id number.
>
> Maybe someone knows a better way though...
>
> On Fri, Feb 6, 2015 at 1:17 AM, 303343023 <303343023 at qq.com> wrote:
>
>> *Hi everyone*
>> *   It troubles me for times. *
>> *   I have a series of particles vtk files at different time step. And I
>> want to track certain particles and extract them or color them with a
>> uniform color. I tried to use "find data" and include the particle id with
>> "is one of " option. However, it crashed due to overload of compute
>> capacity. About 8 thousand particles is intended for tracking.*
>> *   Furthermore, at the begining, the particles of interest located at
>> the upper layer, coordinatesZ>0, for example. And I want to extract them
>> from the whole.*
>> *  Could any one help me? Thanks in advance!*
>>
>> Chenshu Hu
>>
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