:orphan:
# PetscDSGetFieldIndex
Returns the index of the given field 
## Synopsis
```
#include "petscds.h" 
PetscErrorCode PetscDSGetFieldIndex(PetscDS prob, PetscObject disc, PetscInt *f)
```
Not Collective


## Input Parameters

- ***prob -*** The `PetscDS` object
- ***disc -*** The discretization object



## Output Parameter

- ***f -*** The field number





## See Also
 `PetscDS`, `PetscGetDiscretization()`, `PetscDSGetNumFields()`, `PetscDSCreate()`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/dt/interface/dtds.c.html#PetscDSGetFieldIndex">src/dm/dt/interface/dtds.c</A>


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