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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">8 months ago I pushed what I thought was a fix for a problem where data read from the CGNS reader was not properly mirrored by, e.g., the vtkReflectionFilter. The data from the CGNS files we use contains multiple vector fields (velocity,
shear stress, you name it).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">What I did was to set the vtkDataSetAttributes::VECTORS attribute on all vector fields in the dataset (thinking that with that attribute set, the vtkReflectionFilter would work properly). Indeed, my (it turns out incomplete) tests showed
that it did, I was happy, and my fix was merged. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Unfortunately, the users find problems: <a href="http://public.kitware.com/pipermail/paraview/2016-October/038152.html">
http://public.kitware.com/pipermail/paraview/2016-October/038152.html</a> <o:p></o:p></p>
<p class="MsoNormal">Origin of the problem: my “fix”…. It turns out that if you call dsa->SetVectors(arr) on multiple arrays, only the last array on which it was called remains in the list of data arrays. The previous array for which this attribute was set
is removed from the dataset attributes object. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">So, my question is: how to do this properly? Looking at the code of the vtkReflectionFilter I see that it gets “the vectors” from the dataset. Unfortunately, in our case there is no concept of “the vectors”. There are multiple vector fields
that ALL NEED TO GET MIRRORED by the reflection filter.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Any insight here is very welcome :-)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="NL">Best wishes,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="NL"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="NL"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="NL">Menno Deij – van Rijswijk<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="NL"><o:p> </o:p></span></p>
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<font style="font-family:Verdana;font-size:8pt;color:#7D7D7D;font-weight:bold;">dr. ir.</font><font style="font-family:Verdana;font-size:8pt;color:#7D7D7D;font-weight:bold;">
</font><font style="font-family: Verdana;font-size:8pt;color:#7D7D7D;font-weight:bold;">Menno A.</font><font style="font-family: Verdana;font-size:8pt;color:#7D7D7D;font-weight:bold;">
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