[petsc-users] Ouput matrix and rhs to files

[Qin Lu]

Hello,
 
Are there any PETSc subroutines to output the matrix and right-hand-side to 
files in CRS for MATLAB format? There seems to be PetscViewerASCIIOpen 
subroutine, does it also output rhs? Is there any example code for this?
 
Many thanks,
Qin