[Paraview] Volume Render Plot - Unreasonable results with vector components or magnitude

[Cory Quammen]

Hi Mathias and Andrew,

Volume rendering by vector component should be fixed in the ParaView
5.2 release, due out in the next two weeks.

See https://gitlab.kitware.com/paraview/paraview/merge_requests/1105

Thanks,
Cory

On Thu, Nov 3, 2016 at 7:06 AM, Andrew <antech777 at gmail.com> wrote:
> Hello. I noticed the same behaviour in ParaView 4.3 on CentOS 6.7. Looks
> like bug. Worked around with calculating the velocity magnitude as scalar.
> There is also another bug or feature of volume rendering: I couldn't make it
> render for all domains, it only renders one domain (for example, when I load
> a CFD study results in EnSight Gold format).
>
> 2016-11-03 13:51 GMT+03:00 Dietzel Mathias <M.Dietzel at iab-weimar.de>:
>>
>> Hello everyone,
>>
>>
>>
>> I am using Paraview’s Volume Render plot to visualize a velocity field
>> inside some technical equipment. In case of plotting a component of the
>> vector field or the magnitude of the vector (both from the drop-down menu)
>> with volume render I get unreasonable results, e.g. minimum or maximum zones
>> are not shown correctly or the flow direction seems wrong. However, if I
>> calculate a scalar value from the vector that corresponds to the component
>> or to the magnitude (e.g. using the calculator filter in Paraview) and then
>> plot by volume render, the fluid field is represented correctly.
>>
>>
>>
>> The data itself seems OK since a surface or slice plot leads to the same
>> (correct) results, no matter  whether I use the vector component directly or
>> the scalar value. I tested the behavior with several data sets. I am using
>> Paraview 4.3.1 64-bit and Paraview 5.1.2 64-bit – both show the same
>> behavior.
>>
>>
>>
>> I appreciate any comment.
>>
>>
>>
>> Best regards
>>
>> Mathias Dietzel
>>
>>
>>
>>
>>
>>
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>
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the ParaView Wiki at:
> http://paraview.org/Wiki/ParaView
>
> Search the list archives at: http://markmail.org/search/?q=ParaView
>
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-- 
Cory Quammen
Staff R&D Engineer
Kitware, Inc.