# DMDASNESSetJacobianLocal
set a local Jacobian evaluation function for use with `DMDA` 
## Synopsis
```
#include "petscdmda.h" 
#include "petscsnes.h" 
PetscErrorCode DMDASNESSetJacobianLocal(DM dm, PetscErrorCode (*func)(DMDALocalInfo *, void *, Mat, Mat, void *), void *ctx)
```
Logically Collective


## Input Parameters

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



## Calling sequence
For PetscErrorCode (*func)(DMDALocalInfo *info,void *x,Mat J,Mat M,void *ctx),

- ***info -*** `DMDALocalInfo` defining the subdomain to evaluate the Jacobian at
- ***x -*** dimensional pointer to state at which to evaluate Jacobian (e.g. PetscScalar *x or **x or ***x)
- ***J -*** Mat object for the Jacobian
- ***M -*** Mat object for the Jacobian preconditioner matrix
- ***ctx -*** optional context passed above





## See Also
 `DMDA`, `DMDASNESSetFunctionLocal()`, `DMSNESSetJacobian()`, `DMDACreate1d()`, `DMDACreate2d()`, `DMDACreate3d()`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/utils/dmdasnes.c.html#DMDASNESSetJacobianLocal">src/snes/utils/dmdasnes.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/tutorials/ex15.c.html">src/snes/tutorials/ex15.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/tutorials/ex16.c.html">src/snes/tutorials/ex16.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/tutorials/ex48.c.html">src/snes/tutorials/ex48.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/tutorials/ex5.c.html">src/snes/tutorials/ex5.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/tutorials/ex55.c.html">src/snes/tutorials/ex55.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/tutorials/ex5f.F90.html">src/snes/tutorials/ex5f.F90.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/tutorials/ex9.c.html">src/snes/tutorials/ex9.c.html</A><BR>


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


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