Hi Noah, See answers and questions for you inlined below.
> 1) My original data extends beyond the x=0 symmetry plane by two data > points. And I have no data point on x=0 itself. This is because in the > simulation, there is a third-order polynomial element centered on x=0. > What would you like to see on x=0? > 2) My data is represented as Structured Curvilinear Grid (.VTS files) > though in actuality, it is rectilinear. > Shouldn't be a problem. > 3) Some data arrays have odd symmetry, such that f(x<0) = -f(x>0) > The Reflect filter doesn't support this, but you obviously know that. > Here’s what I’ve tried. > A) Use the Reflect filter, reflect about x=0. Works quite well for even > symmetry data, but the odd-symmetry data is misrepresented with opposite > sign for (x<0). Also, there are glitches with the doubled-up mesh points > about x=0. That becomes obvious when I tried to add a calculator to > correct the odd symmetry based on (x<0) boolean expression. > Could you describe the glitches? I couldn't understand them from just the images you attached. > B) Manually select data points with (x>0); Extract Selection; Reflect that > extraction; Group original and new selection. Problem: I end up with a > band of missing data for the cell centered on x=0. > Again, what do you expect to see at x=0 if your original data doesn't have anything at x = 0? Thanks, Cory > Ideally, I want to end up with a consistent full-domain representation > such that I can perform stream line traces across the x=0 mid-plane. > > I’d be very grateful if anyone could point out a working solution. > Here’s one of my data files and some screenshots of my failed attempts. ( > The scalar data item EM_field_n_c4 is a good odd-symmetry example. ) > > VTS data file 800 kB > <https://dl.dropboxusercontent.com/u/54478577/supporting%20forum%20posts/paraview_odd_symmetry_help/harris_current_sheet_equilibreum_2.vts> > > Existing Curvilinear Mesh representation > <https://dl.dropboxusercontent.com/u/54478577/supporting%20forum%20posts/paraview_odd_symmetry_help/By.jpg> > > ProblemA demonstration of missing band about x=0 > <https://dl.dropboxusercontent.com/u/54478577/supporting%20forum%20posts/paraview_odd_symmetry_help/missingband.jpg> > > ProblemB demonstration of glitch at centerline > <https://dl.dropboxusercontent.com/u/54478577/supporting%20forum%20posts/paraview_odd_symmetry_help/glitch_at_centerline.jpg> > > > Best Regards, > > Noah Reddell > University of Washington > > > _______________________________________________ > 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 > > Follow this link to subscribe/unsubscribe: > http://public.kitware.com/mailman/listinfo/paraview > > -- Cory Quammen R&D Engineer Kitware, Inc.
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