ffc team mailing list archive

[Marie Rognes <meg@xxxxxxxxx>]

Kristian Oelgaard wrote:
> On 28 January 2010 22:12, Garth N. Wells <gnw20@xxxxxxxxx> wrote:
> > Kristian Oelgaard wrote:
> > > On 28 January 2010 21:16, Garth N. Wells <gnw20@xxxxxxxxx> wrote:
> > > > Anders Logg wrote:
> > > > > On Thu, Jan 28, 2010 at 07:51:52PM +0100, Kristian Oelgaard wrote:
> > > > > > On 28 January 2010 19:18, Anders Logg <logg@xxxxxxxxx> wrote:
> > > > > > > Update:
> > > > > > >
> > > > > > >  ElementRestriction.ufl
> > > > > > Could you have a look at and comment on the discussion about element
> > > > > > restrictions? It was posted a couple of days ago on the list. It
> > > > > > would be nice to get right the first time.
> > > > > >
> > > > > > Kristian
> > > > >
> > > > > I can't find the discussion about element restrictions.
> > > > >
> > > > > What is the status of getting ElementRestriction working? I haven't
> > > > > looked at restrictions at all so I don't know how it should be
> > > > > handled.
> > > > >
> > > > > And shouldn't the name of the element be RestrictedElement rather 
> > > > > than
> > > > > ElementRestriction?
> > > >
> > > > I should probably be 'FacetRestriction'.
> > >
> > > No, because we can restrict elements to Cell, Measure and possibly
> > > SubDomain.
> >
> > 'Can' or 'would like to'? ;)
>
> OK, so it is 'could' in the old FFC for restrictions onto facets and 
> to Measure (the *dc that Mehdi uses), the sub-domains business is easy 
> to switch on i UFL, but harder to implement in FFC and it is currently 
> unsupported in both old and new FFC. And it wouldn't like to be able 
> to restrict elements to SubDomains and the moment :)


Could somebody fill me in on precisely what the

   "Restrictions to Measure"

and

   "Restrictions to SubDomains"

mean?

(Math wanted ;) )

--
Marie