dolfin team mailing list archive

["Garth N. Wells" <g.n.wells@xxxxxxxxxx>]

Create a Vector, and then you can then access the underlying uBlasVector 
to perform specific operations,

  Vector x;
  uBlasVector& xx = x.vec();

Garth

Alessio Quaglino wrote:
> Ok I understand the second group of errors then. But the Function.h
> interface is made using the Vector and not uBlasVector, so how can I use
> both the constructor dolfin::Function::Function(dolfin::Mesh&,
> dolfin::Vector&, const dolfin::Form&, dolfin::uint) and not lose the
> functionalities of uBlas? Thanks.
>
> Alessio
>
>
> > This is a result of a (small but important) interface change in the
> DOLFIN linear algebra library.
> > Before (until 0.7.0-1) Vector was a typedef for either a PETScMatrix or
> a uBlasMatrix. As a result, the things you could do with a Vector
> depended on how you had configured DOLFIN.
> > Now, Vector is a (very lightweight) wrapper for either a PETScMatrix or
> a uBlasMatrix that only supports the functionality of the GenericVector
> interface. So, no matter how you configure DOLFIN (with PETSc or uBlas),
> the code will always compile.
> > Your problem is that you have used Vector, but have used uBlas-specific
> functions that are not available in the common Vector interface.
> > So, you need to either just use the functions in Vector or change from
> Vector to uBlasVector if you need to use functionality that is
> > uBlas-specific.
> >
> > /Anders
> >
> >
> > Alessio Quaglino wrote:
> > > I've cloned the latest repository of dolfin. I'm compiling my code against
> > > it but I'm not able to solve the following errors:
> > >
> > > ElasticityUpdatedSolver.cpp:41: error: no matching function for call to
> 'dolfin::Function::Function(dolfin::Mesh&, dolfin::uBlasVector&,
> dolfin::Form&, int)'
> > > ../../../src/kernel/function/dolfin/Function.h:63: note: candidates
> are: dolfin::Function::Function(const dolfin::Function&)
> > > ../../../src/kernel/function/dolfin/Function.h:60: note:
> > > dolfin::Function::Function(std::string)
> > > ../../../src/kernel/function/dolfin/Function.h:57: note:
> > > dolfin::Function::Function(dolfin::SubFunction)
> > > ../../../src/kernel/function/dolfin/Function.h:54: note:
> > > dolfin::Function::Function(dolfin::Mesh&, dolfin::Vector&, const
> dolfin::Form&, dolfin::uint)
> > > ../../../src/kernel/function/dolfin/Function.h:51: note:
> > > dolfin::Function::Function(dolfin::Mesh&, dolfin::real)
> > > ../../../src/kernel/function/dolfin/Function.h:48: note:
> > > dolfin::Function::Function(dolfin::Mesh&)
> > > ../../../src/kernel/function/dolfin/Function.h:45: note:
> > > dolfin::Function::Function()
> > >
> > > ElasticityUpdatedSolver.cpp:203: error: 'class dolfin::Vector' has no
> member named 'copy'
> > > ElasticityUpdatedSolver.cpp:204: error: 'class dolfin::Vector' has no
> member named 'copy'
> > > ElasticityUpdatedSolver.cpp:207: error: 'class dolfin::Vector' has no
> member named 'axpy'
> > > It seems that dolfin sees the class Vector as incompatible with
> uBlasVector. What can I do to fix this in my code? Thanks.
> > > Regards,
> > > Alessio Quaglino
> > >
> > > _______________________________________________
> > > DOLFIN-dev mailing list
> > > DOLFIN-dev@xxxxxxxxxx
> > > http://www.fenics.org/mailman/listinfo/dolfin-dev
>
>
>
>
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