On Wed, Jun 29, 2016 at 10:43 AM, Junchao Zhang <junchao.zh...@gmail.com> wrote:
> > On Wed, Jun 29, 2016 at 11:28 AM, John Peterson <jwpeter...@gmail.com> > wrote: > >> >> >> On Wed, Jun 29, 2016 at 10:00 AM, Junchao Zhang <junchao.zh...@gmail.com> >> wrote: >> >>> I usually dump a mesh into a GMVIO file and then view it with ParaView. >>> Suppose I find a cell is weird and want to examine it in debugger. I can >>> get the cell ID in ParaView, which I guess is a sequential number for >>> active elements. Then, how can I locate the cell (get the pointer to it) >>> in >>> debugger? Suppose we use ReplicatedMesh. >>> >> >> The cell number in Paraview (make sure you select GlobalElementId, not >> PedigreeElementID) is typically off-by-one (libmesh is zero-based, Exodus >> is one-based) from the numbering in libmesh when you are using >> ReplicatedMesh, unless renumbering happens in your simulation, then all >> bets are off... >> >> > ParaView gives a 0-based ID for elements dumped by libmesh. > I'm curious why you think this. I just wrote out a 1 element mesh and checked the element ID in paraview. It's 1, not 0. Image: https://drive.google.com/file/d/0B9BK7pg8se_iSG80NGwxUkJiX0E/view?usp=sharing > For adaptive mesh, they are only active elements. Hope libmesh could > provide an interface to query active elements, otherwise it is very > inconvenient to debug AMR code. > libmesh provides many such interfaces. Paul already described how to print element IDs in the debugger. If you want to print them from code, just add print statements to do that (loop over active elements, etc). -- John ------------------------------------------------------------------------------ Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San Francisco, CA to explore cutting-edge tech and listen to tech luminaries present their vision of the future. This family event has something for everyone, including kids. Get more information and register today. http://sdm.link/attshape _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
