[Paraview] Programmable Filter Help, Part 2

[dennis_conklin at goodyear.com]

Andy,

A typical rookie mistake.   I was combining composite data set examples 
and non-composite examples from the wiki, and I got my output and my block 
intermixed.  It's very obvious now that you pointed it out.

Thanks very much, that works fine now. 

One question if I may:  since Nodes (or points) are common to multiple 
blocks at block boundaries I'm surprised that something strange didn't 
happen when I assigned PointData to some points multiple times - once for 
each block they are contained in.  It also seems strange that there isn't 
some master POINTS array of all points in the composite data set that I 
could have operated on, especially as I did nothing to the cells and it 
seems the blocks are mostly a cell thing.   Am I missing something there? 
How are points common to different blocks handled?

Thanks again

Dennis Conklin
RDE & Q Senior Engineer 
Engineering Mechanics
The Goodyear Tire & Rubber Company
200 Innovation Way, Akron, OH  44316
phone.330-796-5701
dennis_conklin at goodyear.com





From:   Andy Bauer <andy.bauer at kitware.com>
To:     dennis_conklin at goodyear.com
Cc:     "paraview at paraview.org" <paraview at paraview.org>
Date:   10/17/2013 01:19 PM
Subject:        Re: [Paraview] Programmable Filter Help, Part 2



Hi,

Where did you get the example from? 

I think your confusion is from the difference between multiblock data sets 
and regular data sets. The regular data set has points and the 
Programmable Filter gives a shortcut to access those points by using 
inputs[0].Points and output.Points but there is no concept of a group of 
points in a multiblock data set, only in the regular data set blocks of 
the multiblock data set. So for the process_block() method you'll want to 
do a block.GetPoints() to get the points. To make it more efficient you 
can use numpy. An example is at 
http://www.paraview.org/Wiki/Python_Programmable_Filter#Center_Data_using_numpy
. 

You can add print statements in the script but they'll be outputted to the 
output window (Tools->Output Window).

Regards,
Andy 


On Thu, Oct 17, 2013 at 10:35 AM, <dennis_conklin at goodyear.com> wrote:
My original post was truncated into oblivion, so here is my Second 
attempt. 

I'm trying to put together a Programmable filter that will add arrays of 
deformed and undeformed coordinates and undeformed angles to my PointData 
in 4.0.1