[petsc-users] nonzero prescribed boundary condition

[Tian(ICT)]

Dear all,

I got this question long ago and searched the prior posting but did not find 
the solution.
The question is about nonzero prescribed boundary condition.
My understanding is that MatZeroRows() works only for zero prescribed value, 
not non-zero value.
For the non-zero values, we have to remove the rows associated with the 
boundary, but this
will lead to a zero dignal and accordingly the rows in r.h.s should also be 
removed.
My question is that does MatZeroRows() also works for nonzero prescribed 
boundary and if so how to do it simply?

Rong