[petsc-users] Matrix assebly

[Barry Smith]

   You would simply call MatSetValues() to change those values (or MatSetValuesBlocked, etc). There are no special routines for changing columns.

  Barry

> On Apr 20, 2015, at 3:05 AM, siddhesh godbole <siddhesh4godbole at gmail.com> wrote:
> 
> Hello,
> 
> I have created a matrix with initial values and i want to change the elements of the same matrix and in the iterations column wise. how do i insert new columns into the matrix when calls for assembly begin and end have already been made?
> 
> I have used MatGetColumnVector to select which column to edit but how do i store it back into the same matrix? because it seems it does not happen otherwise.
> 
> Siddhesh M Godbole
> 
> 5th year Dual Degree,
> Civil Eng & Applied Mech.
> IIT Madras