:orphan:
# DMDATSSetIJacobianLocal
set a local residual evaluation function for use with `DMDA` 
## Synopsis
```
#include "petscdmda.h" 
#include "petscts.h" 
PetscErrorCode DMDATSSetIJacobianLocal(DM dm, DMDATSIJacobianLocal func, void *ctx)
```
Logically Collective


## Input Parameters

- ***dm   -*** `DM` to associate callback with
- ***func -*** local residual evaluation
- ***ctx   -*** optional context for local residual evaluation



## Calling sequence of `func`
```none
PetscErrorCode func(DMDALocalInfo *info, PetscReal t, void* x, void *xdot, PetscScalar shift, Mat J, Mat B, void *ctx)
```

- ***info -*** defines the subdomain to evaluate the residual on
- ***t    -*** time at which to evaluate the jacobian
- ***x    -*** array of local state information
- ***xdot -*** time derivative at this state
- ***shift -*** see `TSSetIJacobian()` for the meaning of this parameter
- ***J    -*** Jacobian matrix
- ***B    -*** preconditioner matrix; often same as `J`
- ***ctx  -*** optional context passed above





## See Also
 [](ch_ts), `DMDA`, `DMTSSetJacobian()`, `DMDATSSetIFunctionLocal()`, `DMDASNESSetJacobianLocal()`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/utils/dmdats.c.html#DMDATSSetIJacobianLocal">src/ts/utils/dmdats.c</A>


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


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