dolfin team mailing list archive

[Johan Hake <johan.hake@xxxxxxxxx>]

On Wednesday 16 December 2009 10:18:50 David Beacham wrote:
> Johan Hake wrote:
> > On Wednesday 16 December 2009 09:28:21 David Beacham wrote:
> >> Hi,
> >>
> >> I'm not sure if it's my relative inexperience with python, but I can't
> >> find the coordinates x in data, when overloading eval_data in
> >> Expression. I'm guessing from doxygen/pydoc that they should be
> >> available?
> >
> > Have you tried:
> >
> >   x = data.x()
> 
> No, I don't seem to have the Data.x() method either:
> 
> (Pdb) p data.x()
> *** AttributeError: AttributeError("'Data' object has no attribute 'x'",)
> 
> although everything else from the cpp side is showing up and is useable:
> 
> (Pdb) p dir(data)
> ['__class__', '__delattr__', '__dict__', '__doc__', '__format__',
> '__getattribute__', '__hash__', '__init__', '__module__', '__new__',
> '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__',
> '__str__', '__subclasshook__', '__swig_destroy__', '__weakref__',
> 'cell', 'clear', 'facet', 'geometric_dimension', 'normal', 'on_facet',
> 'set', 'this', 'thisown', 'ufc_cell']
> 
> FWIW, I can get Data.x to work in cpp.

Ahh!

I see that Data.x has not been updated to the new Array interface. The old 
mapping was just out commented, so that's why it does not work. 

I can fix this later this day. Thanks for the report!

Johan

> > We needed to make the x attribute a method returning the x array in
> > Python.
> >
> > Johan
> >
> >> David
> >>
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