dolfin team mailing list archive

[Johan Jansson <johanjan@xxxxxxxxxxxxxxxx>]

On Thu, Feb 16, 2006 at 12:02:35AM -0600, Anders Logg wrote:
> I suggest that we update the interface for Function input so it works
> the same as for other objects, so we change from
> 
>     File file("function.xml");
>     Function f;
>     functionfile.parse(f, element);
> 
> to 
> 
>     File file("function.xml");
>     file >> f;
> 
> While reading the Function, the input checks the type of finite
> element and attaches it appropriately if found (only P1 for now).
> Otherwise, it generates a warning that the element could not be found
> so it needs to be supplied by the user by
> 
>     f.attach(element);
> 
> For this to work (automatically creating and attaching an element
> while reading), we need to let a Function keep a local FiniteElement
> in the same way as it can keep a local Vector (element_local == true,
> same as vector_local == true in DiscreteFunction).
> 
> Any objections?
> 
> /Anders
> 

This is a good idea. I didn't think having to attach the element
before reading a file was a very intuitive interface, but if we can
detect and attach common elements automatically then it's not so
important.

  Johan