Hi Shuhao, In ParaView, the connectivity filter is available to assign a region id to each of closed loops and generate a RegionId array. And then the threshold filter can be used to separate them.
Thanks 2018-02-20 6:12 GMT+09:00 Shuhao Wu <[email protected]>: > Hello All, > > I'm currently using the Contour filter on a 2D slice. This contour gives me > a series of closed loops at arbitrary locations of my plot. Does > Paraview/VTK already expose a way to group the points associated with each > of these closed loops? > > If not, I have two possible strategies to detect these points: > > 1. I think the contour filter outputs the points of each closed loops in > sequential order in the point array. I could compare the geometric distance > between two sequential points in the array and detect a "large jump" > followed by a "large decrease" to detect the transition from one loop to the > next. > > 2. I could employ some sort of cluster finding algorithm, although I'm not > sure which one as I do not know how many of these loops are and likely need > something that optimizes for boundaries as opposed to centroids. > > Are these ideas sane if PV doesn't already expose some functionalities that > I do not know about? > > Thanks, > Shuhao > _______________________________________________ > 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: > https://public.kitware.com/mailman/listinfo/paraview _______________________________________________ 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: https://public.kitware.com/mailman/listinfo/paraview
