how to only set the boundary condition for part of the axis.

[judy2016hh]

Thanks for your great code!
I met a little problem and didn't find the solution in the document. I try to solve a 2D Laplace problem, where the boundary condition is inhomogeneous and is given by an array when x>1 and no constraint when x<1.

Is there any way to implement this kind of boundary condition?

[david-zwicker]

Please specify more details of your problem together with example code. As written right now, I have no idea what you're trying to achieve.

[judy2016hh]

Thank for your response. It is a 2D Laplace problem for $u(x,y)$, $x,y \in [0,2]$. The boundary condition is $u(x,y=0)=1$ when $x \in [1,2]$.

[david-zwicker]

Please provide example code of what you have tried.