RE: Project progress

[marco Vassallo]

> But why do you say you don't trust nnz returned by the data() method?
> c.

It is just that I checked the value of nnz as given from the data method and 
sometimes it is really higher then the final value and sometimes really closer.
For example,
                                  data-> nnz  |  final value in octave
Poisson problem   |     7361          |  5119
Darcy-Stokes        |      2681009   |  1283503
Mixed-Poisson      |      88320        |  81440

But as it is always an upper bound maybe we can just use it and avoid the if 
statement.

Marco