[Paraview] Script to save avg value in an array

[Rakesh Dhote]

Hi Utkarsh,

Thank you very much for the video and detailed instructions. It works fine
:)

One quick question: I found that the ensight case format does not support
the volume rendering.
Is there any filter or trick to plot the volume data ?

Warm regards,
Rakesh




On Fri, Aug 9, 2013 at 1:24 PM, Utkarsh Ayachit <utkarsh.ayachit at kitware.com
> wrote:

> Here are the steps:
>
> + Open Data file, hit apply
> + Create calculator with the reader selected. set the StressXX expression,
> hit apply
> + Create another calculator with the first calculator selected (this is
> different from your state file). Set the StrainXX expression; hit apply
> + Create "Integrate Variables" filter with the second calculator selected.
> Hit Apply. A spreadsheet view will be created with 1 row.
> + Select that 1 row my clicking on it. Now create "Plot Selection Over
> Time" filter. Hit apply. That will show the plot over time. You can change
> the variables plotted by using the Properties panel.
>
> The attached video demonstrates the same.
>
> Utkarsh
>
>  plotting_stress_strain.ogv<https://docs.google.com/a/kitware.com/file/d/0B26kKqqTZSgGQTB4NzFTME9vdkE/edit?usp=drive_web>
>
>
>
> On Fri, Aug 9, 2013 at 9:53 AM, Rakesh Dhote <rpd.toastmasters at gmail.com>wrote:
>
>> Hi Utkarsh,
>>
>> Please find the sample results file in the zip folder for the first 3
>> time steps. You can load the state to find the expression for stressxx
>>  (calculator1) and strainxx (calculator2).
>>
>> I would like to integrate the stress and strain separately over the whole
>> domain at each time step and save it in an arrays to plot the average
>> stress and avg. strain over time.
>> Later I would like to plot the stress-strain relationship.
>>
>> Please let me know how  to do it in Paraview.
>>
>>
>> On Wed, Aug 7, 2013 at 10:22 AM, Utkarsh Ayachit <
>> utkarsh.ayachit at kitware.com> wrote:
>>
>>> Do you have  sample dataset that you can share and the expression you
>>> want to use? That'll make it easier.
>>>
>>> On Wed, Aug 7, 2013 at 4:11 AM, Rakesh Dhote <rpd.toastmasters at gmail.com>
>>> wrote:
>>> > Hi,
>>> >
>>> > I need a small favor in writing a small python script. I calculate
>>> average
>>> > stress in the domain based on the strain values using an analytical
>>> > expression. The avg. stress value is calculated at one time instant.
>>> >
>>> > I need to save the average stress at every time instant  in an array ,
>>> which
>>> > will later be plotted to obtain the avg. stress value with time.
>>> >
>>> > I am not conversant with the Paraview scripting. Please let me know
>>> how to
>>> > write a script to acheive above task.
>>> >
>>> > The results are plotted in paraview in the ensight case format.
>>> >
>>> > Warm regards,
>>> > Rakesh
>>> >
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>>
>>
>>
>
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