<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi,<div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>I’ve simulated a problem in 2D where an odd symmetry boundary condition is applied across the x=0 plane. I now want to visualize the full domain.</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>There seem to be three complications making Paraview capabilities that I currently know about not workable. Maybe other’s can point out a pipeline that works. If I need a programmable filter, so far I am lost at what to implement.</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>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.</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>2) My data is represented as Structured Curvilinear Grid (.VTS files) though in actuality, it is rectilinear.</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>3) Some data arrays have odd symmetry, such that f(x<0) = -f(x>0)</div><div class=""><br class=""></div><div class="">Here’s what I’ve tried.</div><div class="">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.</div><div class="">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.</div><div class=""><br class=""></div><div class="">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.</div><div class=""><br class=""></div><div class="">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. )</div><div class=""><br class=""></div><div class=""><a href="https://dl.dropboxusercontent.com/u/54478577/supporting%20forum%20posts/paraview_odd_symmetry_help/harris_current_sheet_equilibreum_2.vts" class="">VTS data file 800 kB</a></div><div class=""><br class=""></div><div class=""><a href="https://dl.dropboxusercontent.com/u/54478577/supporting%20forum%20posts/paraview_odd_symmetry_help/By.jpg" class="">Existing Curvilinear Mesh representation</a></div><div class=""><br class=""></div><div class=""><a href="https://dl.dropboxusercontent.com/u/54478577/supporting%20forum%20posts/paraview_odd_symmetry_help/missingband.jpg" class="">ProblemA demonstration of missing band about x=0</a></div><div class=""><br class=""></div><div class=""><a href="https://dl.dropboxusercontent.com/u/54478577/supporting%20forum%20posts/paraview_odd_symmetry_help/glitch_at_centerline.jpg" class="">ProblemB demonstration of glitch at centerline</a></div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">Best Regards,</div><div class=""><br class=""></div><div class="">Noah Reddell</div><div class="">University of Washington</div><div class=""><br class=""></div></body></html>