Johan, Thanks, that is what I was hoping to hear :)
On Mon, Mar 14, 2011 at 6:06 PM, Johan Hake <[email protected]> wrote: > On Monday March 14 2011 08:44:19 Neilen Marais wrote: >> Johan, >> >> On Mon, Mar 14, 2011 at 5:21 PM, Johan Hake <[email protected]> wrote: >> > On Monday March 14 2011 04:36:29 Neilen Marais wrote: >> > If you have an already tetrahedralized structure, typically given by a >> > coordinate array and an array of conductivities between cells and >> > vertices, you can use MeshEditor. That is what MeshEditor really is for. >> > >> > >> > I think the advice of not using MeshEditor is when you use it to >> > construct the vertices and connectivities by hand. >> >> I guess I'm just worrying about performance in python, since I would >> have to do one method call for each vertex and one for each tet. I may >> be prematurely optimising here, but IIRC even method calls to SWIG >> wrapped C++ classes have a fair amount of overhead. Since I already >> have the vertex coordinates and cell -> vertex connectivity data in >> arrays, it is obviously much faster to just stuff them directly into >> the dolfin structures? > > Sure you are right that it might come with some overhead. Not sure it will be > significant though, as this would probably be a one time thing? > > But after reading your post one more time I realize what you asked for :P, and > the answer is yes! You can perfectly do what you did. mesh.cells() and > mesh.coordinates() each return a NumPy array view of the actuall data. Your > syntax works because NumPy allows it. > > I would do this in a separate script once for each mesh, and then save it to > file so you do not have to do this each time you read in a mesh. > > Johan > >> > Johan >> >> Best regards >> Neilen >> >> _______________________________________________ >> Mailing list: https://launchpad.net/~dolfin >> Post to : [email protected] >> Unsubscribe : https://launchpad.net/~dolfin >> More help : https://help.launchpad.net/ListHelp > _______________________________________________ Mailing list: https://launchpad.net/~dolfin Post to : [email protected] Unsubscribe : https://launchpad.net/~dolfin More help : https://help.launchpad.net/ListHelp
