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[Johan Hake <question125426@xxxxxxxxxxxxxxxxxxxxx>]

Question #125426 on DOLFIN changed:
https://answers.launchpad.net/dolfin/+question/125426

    Status: Open => Answered

Johan Hake proposed the following answer:
On Tuesday September 14 2010 13:52:06 Joe Morris wrote:
> Question #125426 on DOLFIN changed:
> https://answers.launchpad.net/dolfin/+question/125426
> 
>     Status: Answered => Open
> 
> Joe Morris is still having a problem:
> Excellent. In c++ I tried achieving this with:
> 
>     SubSpace V0(*V,0);
>     DirichletBC bcLeftRightFixedU(V0, leftRightFixedU,
> onLeftRightBoundary); bcs.push_back(&bcLeftRightFixedU);
> 
> But at runtime I get the complaint that:
> 
> Error: Unable to create boundary condition. Reason: Illegal value 1 for
> value rank, should be 0.

It looks like you passed a vector constant as leftRightFixedU.

It should be:

  Constant leftRightFixedU(0.);

Johan

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