# ISLocalToGlobalMappingApply
Takes a list of integers in a local numbering and converts them to the global numbering. 
## Synopsis
```
#include "petscis.h"  
PetscErrorCode ISLocalToGlobalMappingApply(ISLocalToGlobalMapping mapping, PetscInt N, const PetscInt in[], PetscInt out[])
```
Not collective


## Input Parameters

- ***mapping -*** the local to global mapping context
- ***N -*** number of integers
- ***in -*** input indices in local numbering



## Output Parameter

- ***out -*** indices in global numbering





## Note
The in and out array parameters may be identical.


## See Also
 [](sec_scatter), `ISLocalToGlobalMapping`, `ISLocalToGlobalMappingApplyBlock()`, `ISLocalToGlobalMappingCreate()`, `ISLocalToGlobalMappingDestroy()`,
`ISLocalToGlobalMappingApplyIS()`, `AOCreateBasic()`, `AOApplicationToPetsc()`,
`AOPetscToApplication()`, `ISGlobalToLocalMappingApply()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/is/utils/isltog.c.html#ISLocalToGlobalMappingApply">src/vec/is/utils/isltog.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/is/is/tutorials/ex4.c.html">src/vec/is/is/tutorials/ex4.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/is/is/tutorials/ex5.c.html">src/vec/is/is/tutorials/ex5.c.html</A><BR>


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


[Index of all IS routines](index.md)  
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[Index of all manual pages](/docs/manualpages/singleindex.md)  
