Anders Logg wrote:
> 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).
>
hi anders,
yes i did that, and now i found the error fortunately. i did not
initialize the bilinear form correctly with some placeholder function
for Eta. now the assembly is working, so i can go on.
thank you & regards,
patrick
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