VecStrideSubSetScatter#
Scatters components from a vector into a subset of components of a multi-component vector.
Synopsis#
#include "petscvec.h" 
PetscErrorCode VecStrideSubSetScatter(Vec s, PetscInt nidx, const PetscInt idxs[], const PetscInt idxv[], Vec v, InsertMode addv)
Collective
Input Parameters#
- s - the smaller-component vector 
- nidx - the number of indices in idx 
- idxs - the indices of the components in the smaller-component vector, 0 <= idxs[0] …idxs[nidx-1] < bs(s) they need not be sorted, may be null if nidx == bs(s) or is - PETSC_DETERMINE
- idxv - the indices of the components in the larger-component vector, 0 <= idx[0] …idx[nidx-1] < bs(v) they need not be sorted 
- addv - one of - ADD_VALUES,- INSERT_VALUES,- MAX_VALUES
Output Parameter#
- v - the location where the subvector is into scattered (the multi-component vector) 
Notes#
One must call VecSetBlockSize() on the vectors before this
routine to set the stride  information, or use a vector created from a multicomponent DMDA.
The parallel layout of the vector and the subvector must be the same;
Not optimized; could be easily
See Also#
Vec, VecStrideNorm(), VecStrideGather(), VecStrideSubSetGather(), VecStrideMin(), VecStrideMax(), VecStrideGatherAll(),
VecStrideScatterAll()
Level#
advanced
Location#
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages