Re: [Getfem-users] DOFs of a node

[Konstantinos Poulios]

Hi,

this is the answer Yves had given to a similar question of mine:

> Normally, you should only work with dof number, not point number.
> A point is a vertex of an element in the mesh. You do not have necessary
> a correspondance between vertex of the mesh and dofs (think to non-coformal
> P1 for instance).

I hope it helps. Something else that I consider as relevant is a
snippet given in:

bgeot_kdtree.h
see:
http://download.gna.org/getfem/doc/getfem_reference/bgeot__kdtree_8h_source.html

which shows a way to implement a mapping between dofs and point numbers.

In my case I had finally found a solution which didn't require this mapping.

Best Regards

Kostas



On Fri, Jul 16, 2010 at 4:53 PM, Roman Putanowicz <address@hidden> wrote:
> Hello,
>
> I haven't found a function that would give DOFs associated with
> given node. Is this because there was no reason to write such
> function or are there some subtle issues related to writing it?
>
> One problem I can see is that a node can be adjacent to elements
> (convexes) that have different finite element methods set on them.
> That would require iteration on convexes adjacent to a node and
> sorting somehow the DOFs.
>
> Regards,
>
> Roman
> --
> Roman Putanowicz, PhD  < address@hidden  >
> Institute for Computational Civil Engng (L-5)
> Dept. of Civil Engng, Cracow Univ. of Technology
> www.l5.pk.edu.pl, tel. +48 12 628 2569, fax 2034
>
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