# VecTaggerRelativeGetBox
Get the relative box defining the values to be tagged by the tagger, where relative boxess are subsets of [0,1] (or [0,1]+[0,1]i for complex scalars), where 0 indicates the smallest value present in the vector and 1 indicates the largest. 
## Synopsis
```
#include "petscvec.h" 
PetscErrorCode VecTaggerRelativeGetBox(VecTagger tagger, const VecTaggerBox **box)
```
Logically Collective


## Input Parameter

- ***tagger -*** the VecTagger context



## Output Parameter

- ***box -*** a blocksize list of VecTaggerBox boxes





## See Also
 `VecTaggerRelativeSetBox()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/utils/tagger/impls/relative.c.html#VecTaggerRelativeGetBox">src/vec/vec/utils/tagger/impls/relative.c</A>


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


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