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[Nguyen Van Dang <question112556@xxxxxxxxxxxxxxxxxxxxx>]

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
>
> --
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>


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Nguyen Van Dang

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