Thank you, Cody. This makes sense. -Xujun
On Mon, Nov 2, 2015 at 9:15 AM, Cody Permann <codyperm...@gmail.com> wrote: > Xujun, > > The full data structure is populated all at once so finding them one by > one really isn't an issue. If you are working with an unstructured mesh > there's not really a better way. > > Cody > > On Fri, Oct 30, 2015 at 10:39 AM Xujun Zhao <xzha...@gmail.com> wrote: > >> Maybe it is more clear to illustrate it in another way: >> My original aim is to build springs between all the nodes and their >> connected neighbors. Each spring has its own equilibrium length at which >> the spring force is zero. Is it possible to directly build these spring >> connections instead of find the nodal neighbors one by one? >> >> Thanks, >> Xujun >> >> >> On Fri, Oct 30, 2015 at 11:25 AM, Xujun Zhao <xzha...@gmail.com> wrote: >> >> > Hi John, >> > >> > I also found these two functions. I am working on it ;-) >> > Thank you very much. >> > >> > Cheers, >> > Xujun >> > >> > On Fri, Oct 30, 2015 at 11:22 AM, John Peterson <jwpeter...@gmail.com> >> > wrote: >> > >> >> >> >> >> >> On Fri, Oct 30, 2015 at 9:50 AM, Xujun Zhao <xzha...@gmail.com> wrote: >> >> >> >>> Hi all, >> >>> >> >>> I want to find the neighboring nodes that are connected with an >> specific >> >>> node i. Does libMesh have functions to do this? Thank you very much. >> >> >> >> >> >> Yes. >> >> >> >> // find_nodal_neighbors() needs a data structure which is prepared by >> >> another function >> >> std::vector<std::vector<const Elem*> > nodes_to_elem_map; >> >> MeshTools::build_nodes_to_elem_map(mesh, nodes_to_elem_map); >> >> >> >> // Then you can call (*node is a reference to the node whose neighbors >> >> you want): >> >> std::vector<const Node*> neighbors; >> >> MeshTools::find_nodal_neighbors(mesh, *node, nodes_to_elem_map, >> >> neighbors); >> >> >> >> -- >> >> John >> >> >> > >> > >> >> ------------------------------------------------------------------------------ >> _______________________________________________ >> Libmesh-users mailing list >> Libmesh-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/libmesh-users >> > ------------------------------------------------------------------------------ _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
