[Paraview] Changing array names

[Ann Moulding]

Well, I tried to run the filter below (entering it into the "Programmable
Filter") - but when I tried to run the calculator on the "filtered" dataset
- it again choked on the text field. (I need to note however that when I
look at the "filtered" dataset in spreadsheet view - the text field is still
there).  
I will go ahead and submit a "Bug" report.  
Any other ideas about how to "filter" out a non-numeric array is
appreciated.
Ann

-----Original Message-----
From: David E DeMarle [mailto:dave.demarle at kitware.com] 
Sent: Monday, February 27, 2012 4:49 PM
To: Ann Moulding
Cc: paraview at paraview.org
Subject: Re: [Paraview] Changing array names

Sounds like a bug in the calculator filter. Please file a bug report to help
us remember to fix it.

Until someone does fix it, try this Script in a python programmable filter,
placed somewhere before the calculator.

id = self.GetInput()
od = self.GetOutput()
od.ShallowCopy(id)
od.GetPointData().RemoveArray('Name')


David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909



On Sat, Feb 25, 2012 at 1:10 AM, Ann Moulding <geoflutist at gmail.com> wrote:
> I am a very new user of Paraview – and am just learning its 
> capabilities. I am importing a series of CSV  files – creating points 
> and Delaunay polygons – and then using the Calculator filter to create 
> vectors to plot with the Glyph tool.  But when I use the calculator – 
> one of the “Point Data” fields is not numeric – and when I write my 
> formula (which does not use the non-numeric field) and hit “Apply”  -  
> thje Output message says
>
> ERROR: In ..\..\..\..\source\VTK\Graphics\vtkArrayCalculator.cxx, line 
> 304
>
> vtkPVArrayCalculator (000000000B39EAE0): Invalid array name: 'Name'
>
> (the name of the non numeric field is “name”).
>
> I tried renaming this field in the input file – and this didn’t work.  
> So I removed the non-numeric field completely from the input file – 
> and the calculator did work.
>
> So, I have the option of editing all of my input files – so they don’t 
> have non-numeric fields – or there is some way of getting Paraview to 
> not choke on this field – or I’m missing something obvious right in front
of my nose?
> Any help is appreciated.
>
> Thanks.
>
> New2PV
>
>
>
>
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