dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Fri, Oct 16, 2009 at 03:14:24PM +0200, Johan Hake wrote:
> On Friday 16 October 2009 15:09:03 Anders Logg wrote:
> > Here's another problem I just ran into:
>
> You just keep bring it on do you!! ;)
>
> I wonder why I keep thinking:
>
>    unittest, unittest, unittest ...

Good idea. :-)

> > class BoundaryValue(Expression):
> >     def eval(self, values, x):
> >         values[0] = ...
> >
> > This works:
> >
> >   g = BoundaryValue(V)
> >
> > or
> >
> >   g = BoundaryValue(V=V)
> >
> > But this does not work:
> >
> >   g = BoundaryValue(element=element)
> >
> > I get this error:
> >
> > Exception: Swig director method error. Error detected when calling
> > 'Expression.eval_data'
> >
> > when calling bc.apply() with the above function as argument (which
> > results in a call to eval).
>
> Could you pass a minimal script that reproduce it so I can look into it?

Sorry, my fault. I forgot that the "Swig director method" error
signals that I have done something wrong inside the eval function
which I had or rather I had initialized with the wrong element so I
wasn't allowed to set values[1]...

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