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

[Su, Simon M CTR USARMY ARL (US)]

Classification: UNCLASSIFIED
Caveats: NONE

Errr.... what would be the equivalent to "menu->save" in python script? Sorry 
for making it difficult as the whole thing is a part of a elaborate automation 
from running simulation to getting the final result. Calling python calculator 
to calculate sum will be in a script run with pvbatch in parallel environment. 
Is CSV file format the best format if I just want to write that sum value out 
to a file? Any example script on writing 1 variable to CSV file format?

Thanks
-simon

-----Original Message-----
From: Utkarsh Ayachit [mailto:utkarsh.ayachit at kitware.com]
Sent: Tuesday, July 22, 2014 4:11 PM
To: Su, Simon M CTR USARMY ARL (US)
Cc: paraview at paraview.org
Subject: Re: [Paraview] get the sum of a cell or point variable (UNCLASSIFIED)

Hey, once the sum() is computed by the calculator, you can just use "save 
data" from the menu and save it out as a CSV :P.

Utkarsh


On Tue, Jul 22, 2014 at 3:49 PM, Su, Simon M CTR USARMY ARL (US) 
<simon.m.su.ctr at mail.mil> wrote:


	Classification: UNCLASSIFIED
	Caveats: NONE

	Hi Utkarsh,

	That's great. That will eliminate the programmable filter part of my 
pipeline.
	You didn't happen to also pushed update to VTK/ParaView that will write the
	expression "sum(EQPS)" to a file that will work in parallel, did you? :)

	Thanks
	-simon


	-----Original Message-----
	From: Utkarsh Ayachit [mailto:utkarsh.ayachit at kitware.com]
	Sent: Tuesday, July 22, 2014 3:43 PM
	To: Su, Simon M CTR USARMY ARL (US)
	Cc: paraview at paraview.org
	Subject: Re: [Paraview] get the sum of a cell or point variable 
(UNCLASSIFIED)

	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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	Classification: UNCLASSIFIED
	Caveats: NONE






Classification: UNCLASSIFIED
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