ufl team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Thu, Jan 01, 2009 at 07:21:28PM +0100, Martin Sandve Alnæs wrote:
> On Thu, Jan 1, 2009 at 5:54 PM, Anders Logg <logg@xxxxxxxxx> wrote:
> > On Thu, Jan 01, 2009 at 04:43:24PM +0100, Martin Sandve Alnæs wrote:
> >> UFL supports absolute values of any scalar expression.
> >>
> >> Martin
> >
> > What about vectors/tensors?
> >
> > Perhaps we could add a mechanism for applying scalar-to-scalar
> > operators to all elements of a tensor (like .* etc in MATLAB).
> >
> > Maybe something like this:
> >
> >  _.abs(expression)
> >
> > We can have a module named _ that contains special versions of all
> > operators.
> 
> With current features, this can be expressed like:
> 
> as_tensor(abs(expression[i,j]), (i,j))

Nice. That should be enough.

-- 
Anders


> But in the case of abs, abs(expression) should be fine.

Attachment: signature.asc
Description: Digital signature