# ISLocalToGlobalMappingApplyIS
Creates from an `IS` in the local numbering a new index set using the global numbering defined in an `ISLocalToGlobalMapping` context. 
## Synopsis
```
#include "petscis.h"  
PetscErrorCode ISLocalToGlobalMappingApplyIS(ISLocalToGlobalMapping mapping, IS is, IS *newis)
```
Collective on mapping


## Input Parameters

- ***mapping -*** mapping between local and global numbering
- ***is -*** index set in local numbering



## Output Parameter

- ***newis -*** index set in global numbering





## Note
The output `IS` will have the same communicator of the input `IS`.


## See Also
 [](sec_scatter), `ISLocalToGlobalMappingApply()`, `ISLocalToGlobalMappingCreate()`,
`ISLocalToGlobalMappingDestroy()`, `ISGlobalToLocalMappingApply()`

## Level
advanced

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


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