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[Robert Kirby <robert.c.kirby@xxxxxxxxx>]

Yes.  The columns of the coeff matrix correspond to the orthogonal basis
functions.You need those to construct the 9 "non-bubble" bases.



On Tue, Aug 18, 2009 at 2:37 PM, Anders Logg <logg@xxxxxxxxx> wrote:

> On Tue, Aug 18, 2009 at 09:12:49PM +0200, Kristian Oelgaard wrote:
> >
> >
> > Hello,
> >
> > I want to eliminate a basis function value (i.e. not generate code for
> it) for
> > evaluate_basis() (and evaluate_basis_derivative()).
> >
> > Calling tabulate(x) on the FIAT element FiniteElement("CG", "triangle",
> 3)
> > will return the dot product of the expansion coefficients (a matrix) and
> the
> > bvals (an array) which is evaluated at the point x.
> >
> > In the current case the coefficients is a 10x10 matrix and the bvals is a
> 10x1.
> > If I just want to return the first 9 basis function values should I
> remove the
> > last row of the coefficient matrix only, or should I also remove the last
> > column as well along with the last row in the bvals?
> >
> > Kristian
>
> I think you should remove the last row to get a 9x10 matrix which you
> multiply with a 10x1 vector to get a 9x1 vector with the values.
>
> --
> Anders
>
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