[Paraview] use of global variables

[Felipe Bordeu]

Sven,

Thank very much for the info. With your filters an the changes to my 
home made paraview, I'm able to do what I want.

I put some changer in the bugs report.

changes to use fielddata in the pythoncalculator.
http://www.paraview.org/Bug/view.php?id=5626.
change to pass the fieldata
http://www.paraview.org/Bug/view.php?id=10787.

Felipe

On 09/10/2011 09:11, Sven Buijssen wrote:
> Felipe,
>
> The Calculator filter has no support for field data currently, see e.g.
> http://www.paraview.org/Bug/view.php?id=5626. Neither it is the only
> filter that does not pass field data, see e.g.
> http://www.paraview.org/Bug/view.php?id=10787.
>
> For operations involving field data, like plotting field data over time
> or some trivial calculations, I resort to the Programmable Filter.
>
> Here's an example pipeline that first adds a source, then adds some
> vector point data to operate on and a single scalar value as field data
> to eventually scale an input (point data) data array (stored in the
> first non-multi-block leaf of a multi-block dataset) by (the first
> component of) the first tuple of a given name data array stored as field
> data and add the result as a new data array.
>
>      Sources - Wavelet - Apply
>      Filters - Programmable Filter -
>          Script: see add.scalarValue.as.fieldData.py - Apply
>      Filters - Random Vectors - Apply
>      Filters - Programmable Filter -
>          Script: see scale.pointData.by.fieldDataValue.py - Apply
>
> It should get you started. Changing the script to work on cell data or
> with a different input data array/field data tuple is straightforward.
>
> Sven
>
>
>
> Felipe Bordeu wrote, On 07.10.2011 19:15:
>> Hello everybody,
>>
>> I have a custom reader, and I generate cells and points data correctly.
>> Now I am trying to put global data (like material propeties) in a
>> vtkFieldData using
>>
>> ouput->SetFieldData(my_vtkfielddata);
>>
>> This work properly and I can see the information in the information tab
>> (variable Y).
>>
>>
>> But the problem is I am unable to access this information in paraview, I
>> cant use the variable in the calculator, and if apply the calculator
>> filter the global fields are not passed to the output.
>>
>> How can I access this kind of information in the calculator??
>>
>> I am using the 3.12.0-RC2 from git in linux, and a custom reader in c++.
>>
>>
>> -- 
>>
>> Felipe Bordeu Weldt
>> Ingénieur de Recherche
>> -------------------------------------
>> Tél. : 33 (0)2 40 37 16 57
>> Fax. : 33 (0)2 40 74 74 06
>> Felipe.Bordeu at ec-nantes.fr
>> Institut GeM - UMR CNRS 6183
>> École Centrale Nantes
>> 1 Rue de La Noë, 44321 Nantes, FRANCE
>> -------------------------------------


-- 

Felipe Bordeu Weldt
Ingénieur de Recherche
-------------------------------------
Tél. : 33 (0)2 40 37 16 57
Fax. : 33 (0)2 40 74 74 06
Felipe.Bordeu at ec-nantes.fr
Institut GeM - UMR CNRS 6183
École Centrale Nantes
1 Rue de La Noë, 44321 Nantes, FRANCE
-------------------------------------