On Tue, Jun 16, 2009 at 5:38 AM, tog <guillaume.alleon at gmail.com> wrote:
> Hi there > > This is a kind of newbie question :) > I have a vector which is the solution of my simulation, I want then to > extract the p indices corresponding to the p biggest values in my vector. Is > there a way to do this with PETSc ? You can get p=1 with VecMax(). > > What if I want to sort my vector to get the indices in ascending order of > their values ? The p=2+ and permutation cases are sophisticated in parallel and not present. In serial, you can use VecGetArray() and PetscSortReal()/SortRealWithPermutation(). Matt > > Thanks > Guillaume > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20090616/eb69dfa7/attachment.htm>
