[Paraview] get the sum of a cell or point variable (UNCLASSIFIED)

[Utkarsh Ayachit]

Simon,

As I am cleaning my inbox, I ran into this email. Since there have been
other emails about this I'll skip your original query :). Just wanted to
give you an update on recent developments in ParaView. We recently pushed
updates to VTK/ParaView to allow you to use Python calculator to compute
"sum" in parallel across all blocks in the dataset. e.g. for can.ex2, you
can apply the Python Calculator and select "Cell Data", with expression
"sum(EQPS)" the result array will have the true global sum. This also
includes operations like min/max/mean etc.

Utkarsh


On Wed, Jun 25, 2014 at 11:21 AM, Su, Simon M CTR USARMY ARL (US) <
simon.m.su.ctr at mail.mil> wrote:

> Classification: UNCLASSIFIED
> Caveats: NONE
>
> Hello,
>
> Running in PV client/server mode, is there a calculator function that will
> add up all the values of a variable (cell or point variable).
>
> I can use the programmable filter to write a python loop to iterate through
> all the cell/point of the variable and add them up. But, running in a
> client/server mode, how would you store that value? Can I just add a single
> value (not array) to the data? If so, what vtk data structure shall I use
> to
> store a double variable? vtk.vtkDouble()? Or is there a way to write that
> value out to a file. Running it in parallel, how would that be handled?
>
> Thanks
> -simon
>
> Classification: UNCLASSIFIED
> Caveats: NONE
>
>
>
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