ufl team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Sat, Jan 10, 2009 at 03:14:02PM +0100, UFL wrote:
> One or more new changesets pushed to the primary ufl repository.
> A short summary of the last three changesets is included below.
> 
> changeset:   492:982082a9d9df0fad6ceab20e57f7a734d7aae9ea
> tag:         tip
> user:        "Martin Sandve Alnæs <martinal@xxxxxxxxx>"
> date:        Sat Jan 10 15:14:29 2009 +0100
> files:       ufl/algorithms/ufl2latex.py ufl/classes.py ufl/differentiation.py ufl/exproperators.py ufl/indexing.py ufl/tensors.py
> description:
> Removed AxisType, simplifying MultiIndex and related code a bit.
> Indexing with an axis is now represented differently:
> 
>   A = <rank 2 tensor expression>
>   b = A[i,:] # rank 1 expression with one free index
> 
> is the same as
> 
>   b = as_tensor(A[i,j], (j,))
> 
> or
> 
>   b = A[i,j](j)

The first one looks good to have (move from free-indexed expression to
tensor) but is it something that it should be mapped to __call__?

__call__ can be saved for other things like for example

  A[i,j](x)

which would be the value at a specific point x.

-- 
Anders


> using the previously checked in experimental syntax.
> 
> 
> changeset:   491:a040706efebd95438b1bed69ac26258884f051da
> user:        "Martin Sandve Alnæs <martinal@xxxxxxxxx>"
> date:        Sat Jan 10 14:03:56 2009 +0100
> files:       test/test.py ufl/exproperators.py ufl/indexing.py
> description:
> Experimental syntax feature: using A(i,j) as short for as_tensor(A, (i,j)).
> Example:
> 
> A = <rank 2 tensor expression>
> a = A[i,j] # a represents the set of all scalar components of A
> C = a(j,i) # C is a rank 2 tensor again (transpose of A actually)
> 
> Is this confusing? Obviously must be documented.
> 
> 
> changeset:   490:e7cf673d1ce6df800e11e8f3117e0d3255315167
> user:        "Martin Sandve Alnæs <martinal@xxxxxxxxx>"
> date:        Fri Jan 09 15:46:54 2009 +0100
> files:       ufl/algorithms/old_ad.py
> description:
> removed old_ad.py
> 
> ----------------------------------------------------------------------
> For more details, visit http://www.fenics.org/hg/ufl

> _______________________________________________
> UFL-dev mailing list
> UFL-dev@xxxxxxxxxx
> http://fenics.org/mailman/listinfo/ufl-dev

Attachment: signature.asc
Description: Digital signature