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[Johan Hake <question112556@xxxxxxxxxxxxxxxxxxxxx>]

Question #112556 on DOLFIN changed:
https://answers.launchpad.net/dolfin/+question/112556

Johan Hake posted a new comment:
Array is included in the dolfin namespace. Exchange Array with dolfin::Array, 
or remove all dolfin:: from your code by including 

  using namespace dolfin;

Have a look in any of the included C++ demos and you get a hint.

Johan

On Tuesday May 31 2011 10:15:57 Nguyen Van Dang wrote:
> Question #112556 on DOLFIN changed:
> https://answers.launchpad.net/dolfin/+question/112556
> 
> Nguyen Van Dang posted a new comment:
> I tried a simple program as following:
> #include <iostream>
> #include <dolfin.h>
> int main()
> {
>  //declare and initialise
>  int degree = 4;
>  Array<double> x(degree + 1);
>  Array<double> y(degree + 1);
>  dolfin::Vector Y(degree + 1);
>  //generate test points
>  x[0] = 0;
>  y[0] = 0;
>  x[1] = 1;
>  y[1] = -2;
>  x[2] = 2;
>  y[2] = -1;
>  x[3] = 3;
>  y[3] = -2;
>  x[4] = 4;
>  y[4] = 0;
>  //set vector
>  Y.set_local(y);
> }
> I got the error: 'Array' was not declared in this scope. Can you help me
> again?
> Thanks a lot.
> Nguyen Van Dang
> 
> On Tue, May 31, 2011 at 6:55 PM, Johan Hake <
> 
> question112556@xxxxxxxxxxxxxxxxxxxxx> wrote:
> > Question #112556 on DOLFIN changed:
> > https://answers.launchpad.net/dolfin/+question/112556
> > 
> > Johan Hake posted a new comment:
> > 
> > On Tuesday May 31 2011 09:31:05 Nguyen Van Dang wrote:
> > > Question #112556 on DOLFIN changed:
> > > https://answers.launchpad.net/dolfin/+question/112556
> > > 
> > > Nguyen Van Dang posted a new comment:
> > > Hello,
> > > When running this program on Windows, I got the following error:
> > > no matching function for call to 'dolfin:Vector::set_local(double*&)'
> > > candidate is: virtual void dolfin::Vector::set_local(const
> > > dolfin::Array<double>&) Can you help me to solve this problem?
> > > Thanks in advance.
> > > Nguyen Van Dang
> > 
> > You need to let x and y to be of type Array<double> instead of C-arrays.
> > Exchange these lines
> > 
> >  double *x = new double[degree + 1];
> >  double *y = new double[degree + 1];
> > 
> > with
> > 
> >  Array<double> x(degree + 1);
> >  Array<double> y(degree + 1);
> > 
> > and you can remove the cleaning of the arrays as well.
> > 
> > Johan
> > 
> > --
> > You received this question notification because you are a direct
> > subscriber of the question.

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