[petsc-users] Forming a matrix from vectors

[Eda Oktay]

Hello all,

I am trying to form a matrix whose columns are eigenvectors I have
calculated before U = [v1,v2,v3]. Is there any easy way of forming this
matrix? My matrix should be parallel and I have created vectors as below,
where nev i s the number of requested eigenvalues. So each V[i] represents
an eigenvector and I should form a matrix by using V.

Vec *V;
  VecDuplicateVecs(vr,nev,&V);
  for (i=0; i<nev;i++){
  ierr = EPSGetEigenpair(eps,i,&kr,NULL,V[i],NULL);
  }

Thanks!

Eda