fenics team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Thu, Feb 19, 2009 at 11:05:26AM -0600, Brandon Chabaud wrote:
> Hello,
> 
> I am trying to define a variational form for a PDE system using the
> VariationalProblem function.  I define the bilinear form A and the linear form
> L with no difficulties.  All boundary conditions are imposed weakly, so the
> DirichletBC function is not used, for example.  The boundary is divided into
> two parts corresponding to different boundary conditions.  These parts are
> marked using MeshFunction and labeled by dirichlet_boundary_function and
> neumann_boundary_function, similar to what is done in the elastodynamics demo. 
> However, when I type in
> 
> VariationalProblem pde(a,L,&dirichlet_boundary_function,&
> neumann_boundary_function),
> 
> I get a "no matching function for call" error upon compiling.  How do I fix
> this?  Thank you.

You are calling VariationalProblem the wrong way. Take a look at the
following demos that all use VariationalProblem:

demo/function/eval/cpp/main.cpp
demo/pde/bcs/cpp/main.cpp
demo/pde/dg/advection-diffusion/cpp/main.cpp
demo/pde/dg/poisson/cpp/main.cpp
demo/pde/elasticity/cpp/main.cpp
demo/pde/elastodynamics/cpp/main.cpp
demo/pde/mixed-poisson/cpp/main.cpp
demo/pde/nonlinear-poisson/cpp/main.cpp
demo/pde/periodic/cpp/main.cpp
demo/pde/poisson1D/cpp/main.cpp
demo/pde/poisson/cpp/main.cpp
demo/pde/stokes/stabilized/cpp/main.cpp
demo/pde/stokes/taylor-hood/cpp/main.cpp

Further questions should be directed to dolfin-dev.

Thanks
-- 
Anders

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