fiat team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Mon, Dec 04, 2006 at 09:35:48AM -0600, Kirby, Robert C wrote:
> 1.) yes, and their derivatives up to and including order.  
> It does not compute normal or tangential
> components; this is up to the caller to do appropriate dot products.

Good.

> 2.) Yes, points should be specified on the reference element of
> the dimension of the facet being evaluated on.  So, if 
> facet_shape == 1, then the points should be one-dimensional.

Good.

> 3.) It should be; if the orderings were different, the local-to-global
> mapping FFC generates wouldn't work and the error would be immediately
> noticeable.

ok.

/Anders


> 
> Robert C. Kirby
> Associate Professor
> Department of Mathematics and Statistics
> Texas Tech University
> 
> "Mathematical software should be mathematical"
> 
> 
> 
> -----Original Message-----
> From: fiat-dev-bounces@xxxxxxxxxx on behalf of Anders Logg
> Sent: Mon 12/4/2006 9:31 AM
> To: Discussion of FIAT development
> Subject: [FIAT-dev] trace_tabulate_jet
>  
> A couple of quick questions about trace_tabulate_jet:
> 
>   trace_tabulate_jet(facet_shape, facet, order, points)
> 
> 1. Does this tabulate the basis functions on the facet with the given
> number?
> 
> 2. If the points are given as a subset of the reference cell of one
> dimension lower (unit interval for facet on a triangle), then are the
> points mapped to a subset of the facet in question?
> 
> 3. Does FIAT have the same numbering of facets as FFC/DOLFIN?
> (The one in Appendix in the manuals.)
> 
> /Anders
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