[Paraview] Export spreadsheet values through python scripting

[Masquelet, Matthieu (GE Global Research)]

Ok that makes sense. It worked great, thank you for the help.

Matthieu

-----Original Message-----
From: Utkarsh Ayachit [mailto:utkarsh.ayachit at kitware.com] 
Sent: Tuesday, March 19, 2013 2:20 PM
To: Masquelet, Matthieu (GE Global Research)
Cc: paraview at paraview.org
Subject: Re: [Paraview] Export spreadsheet values through python scripting

By "threshold", I meant the Python object representating the threshold filter you applied, not the string "threshold". So, in your script you must have the following somewhere:

> Threshold(....)

Save that to a vairable:

> threshold = Threshold(...)

Now pass that to CreateWriter(...).

After reading your email again, it seems you really want the result from the IntegrateVariable filter, so instead of passing the Threshold filer to CreateWriter, pass the variable corresponding to the IntegrateVariable filter.

If you're still having trouble, feel free to post the script and I can edit the script accordingly.

Utkarsh


On Tue, Mar 19, 2013 at 2:06 PM, Masquelet, Matthieu (GE Global
Research) <masquelet at ge.com> wrote:
> Hum, I tried your suggestion but I can't get it to work:
> - if I try "threshold" as argument for CreateWriter I get messages of the like:
> Traceback (most recent call last):
>   File "<string>", line 123, in <module>
>   File "/software/paraview-3.98.1/lib/paraview-3.98/site-packages/paraview/simple.py", line 208, in CreateWriter
>     writer_proxy = writer_factory.CreateWriter(filename, 
> proxy.SMProxy, proxy.Port)
> AttributeError: 'str' object has no attribute 'SMProxy'
> - if I don't bother and only put a filename, I don't think the CreateWriter instance is created correctly:
> Traceback (most recent call last):
>   File "<string>", line 125, in <module>
> AttributeError: 'NoneType' object has no attribute 'FieldAssociation'
>
> Does that mean my vtk install is not correct/up to date? (I'm not sure 
> what it is as this is managed by my sys admin...)
>
> Thanks in advance,
>
> Matthieu
>
> -----Original Message-----
> From: Utkarsh Ayachit [mailto:utkarsh.ayachit at kitware.com]
> Sent: Monday, March 18, 2013 10:32 PM
> To: Masquelet, Matthieu (GE Global Research)
> Cc: paraview at paraview.org
> Subject: Re: [Paraview] Export spreadsheet values through python 
> scripting
>
> Spreadsheet View is not available in python scripts. However, you can save the csv dataset as follows:
>
>> from paraview.simple import *
>> writer = CreateWriter("/tmp/foo.csv", threshold)  # 'threshold' is 
>> optional, if not specified
>
>   # active source is use
>> writer.FieldAssociation = "Points"                     # or "Cells"
>> writer.UpdatePipeline()
>
> Utkarsh
>
> On Mon, Mar 18, 2013 at 7:08 PM, Masquelet, Matthieu (GE Global
> Research) <masquelet at ge.com> wrote:
>> Dear all,
>>
>>
>>
>> Here is a rough outline of my python script:
>>
>> -          Load data
>>
>> -          Cut a slice
>>
>> -          Compute new variable on the slice
>>
>> -          Threshold the slice using new variable
>>
>> -          Perform integration of other variables on the thresholded slice
>>
>> -          Export results of the integration from the spreadsheet to a text
>> file
>>
>>
>>
>> Up to the last step, all is swell. I originally recorded a trace and 
>> built a more general script out of it. However, no python was 
>> generated for the last step. Actually the spreadsheet view does not 
>> even show up when I run the python script. Is there a way for me to 
>> script this part? Manually what I do is I select the spreadsheet 
>> panel and go to File>Save Data... and specify format and filename.
>>
>> I have many integrations to do over many parts of the slice so it 
>> will be a problem if I cannot automate this last part.
>>
>>
>>
>> Thanks in advance for your help.
>>
>>
>>
>> I'm running 3.98.1 64-bit on RHEL 5, the data is unstructured 
>> following Tecplot format.
>>
>>
>>
>> Matthieu Masquelet, PhD
>>
>> Mechanical Engineer
>>
>> Computational Combustion Laboratory
>>
>> Combustion Systems Organization
>>
>> Aerothermal and Mechanical Systems
>>
>> GE Global Research
>> One Research Circle, K1-2C36
>> Niskayuna, NY 12309 United States
>>
>> GE imagination at work
>>
>>
>>
>>
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