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[General] ParaView volume integral

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Old   November 23, 2012, 04:56
Question ParaView volume integral
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Hello!

Does somebody knows how to calculate volume integral result in ParaView? I have a unstructured mesh with scale energy source. I would like to calculate the integral energy over the whole mesh.

Thanks in advance!
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Old   November 26, 2012, 15:35
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Greetings yiphome,

I think what you're looking for is the filter "Integrate Variables": http://cmake.org/Wiki/ParaView/Users...rate_Variables

Best regards,
Bruno
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Old   March 27, 2013, 01:20
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THanks for your help
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Old   April 3, 2013, 07:07
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Hi,

I have the same problem. The "Integrate Variables" filter in Paraview is apparently rather disfunctional: it only works for lines and surfaces. Its failure on volumes can be easily demonstrated by integrating over a 1x1x1 cube. However, the underyling VTK library does support volume integration, so it could be just a matter of invoking the VTK function through the Paraview Python interface.

Any Paraview nerds that can help out with this? I already tried the Paraview-users mailing list, but got no response.

Cheers!
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Old   April 19, 2013, 20:09
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I am sorry to disagree but ParaView is able to integrate variables on lines, surfaces and volumes. To verify, try:

Sources -> Wavelet (creates a 20x20x20 grid)
Filters -> Integrate variables

This will result in a volume of 8000 as well as RTData integrated over the volume.
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