:orphan:
# 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()`, `VecStrideGather()`, `VecStrideSubSetGather()`, `VecStrideMin()`, `VecStrideMax()`, `VecStrideGatherAll()`,
`VecStrideScatterAll()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/utils/vinv.c.html#VecStrideSubSetScatter">src/vec/vec/utils/vinv.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/vec/vec/utils/vinv.c)


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