:orphan:
# VecNestSetSubVec
Set a single component vector in a nest vector at specified index. 
## Synopsis
```
#include "petscvec.h"   
PetscErrorCode VecNestSetSubVec(Vec X, PetscInt idxm, Vec sx)
```
Not Collective


## Input Parameters

- ***X  -*** nest vector
- ***idxm -*** index of the vector within the nest vector
- ***sx -*** vector at index `idxm` within the nest vector





## Note
The new vector `sx` does not have to be of same size as X[idxm]. Arbitrary vector layouts are allowed.


## See Also
 `VECNEST`,  [](ch_vectors), `Vec`, `VecType`, `VecNestSetSubVecs()`, `VecNestGetSubVec()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/nest/vecnest.c.html#VecNestSetSubVec">src/vec/vec/impls/nest/vecnest.c</A>

## Implementations

<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/nest/vecnest.c.html#VecNestSetSubVec_Nest">VecNestSetSubVec_Nest in src/vec/vec/impls/nest/vecnest.c</A><BR>


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


[Index of all Vec routines](index.md)  
[Table of Contents for all manual pages](/manualpages/index.md)  
[Index of all manual pages](/manualpages/singleindex.md)