[petsc-users] A quest about the coordinate and normal of faces at boundaries

[leejearl]

Hi, all:

     I am struggling to use PETSc for some numerical problems. I found 
that the coordinate and normal of

faces at the boundary are all zeros. It seems that PETSc does not 
compute them. How can I get the coordinate

and normal of faces at boundaries in PETSc, or must I compute it by myself?

    Thanks

leejearl