dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Wed, Mar 11, 2009 at 10:21:52AM +0100, Patrick Riesen wrote:
> > hello
> > 
> > So my Etafunction is now being correctly constructed and there are the 
> > correct values in the dof-vector(). i did this by a function class 
> > definition and a call to Eta as
> > 
> > 
> > class Eta: public Function
> > {
> >    Eta (Mesh& mesh, Function& gamma, Form& form, ...) : Function(mesh, 
> > form, argument_id)
> > { constructor....something as above }
> > 
> > and then i call it as
> > 
> > f_eta = new Eta(.....);
> > 
> > in the main program.
> > 
> > calling Eta as Function(mesh,form,id) i thought this should create a 
> > discrete function for f_eta, but the type of the f_eta function is 
> > 'user'. this gives me an error at the assembly, "missing eval() for 
> > user-defined function..."
> > do i have to add an dummy eval() function to my Eta-class, or what do i 
> > have to change that no eva()-missing error is raised and my f_eta 
> > function is of type discrete?
> > 
> > thanks for your help,
> > patrick
> > 
> 
> sorry, i found an error, now the Eta is of type discrete (all 3 argument 
> functions of my form are now discrete). but the eval() error at assembly 
> of the form is still present.

Have you called vector() inside the constructor of Eta? That should
make it discrete and the assembler should not complain. Perhaps there
is some other function in you form that is missing an eval (or a
vector).

-- 
Anders

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