:orphan:
# TaoADMMSetMisfitConstraintJacobian
Set the constraint matrix B for the `TAOADMM` algorithm. Matrix B constrains the z variable.
## Synopsis
```
#include "petsctao.h"
PetscErrorCode TaoADMMSetMisfitConstraintJacobian(Tao tao, Mat J, Mat Jpre, PetscErrorCode (*func)(Tao, Vec, Mat, Mat, void *), void *ctx)
```
Collective
## Input Parameters
- ***tao -*** the Tao solver context
- ***J -*** user-created regularizer constraint Jacobian matrix
- ***Jpre -*** user-created regularizer Jacobian constraint matrix for constructing the preconditioner, often this is `J`
- ***func -*** function pointer for the regularizer constraint Jacobian update function
- ***ctx -*** user context for the regularizer Hessian
## See Also
`TaoADMMSetRegularizerCoefficient()`, `TaoADMMSetRegularizerConstraintJacobian()`, `TAOADMM`
## Level
advanced
## Location
src/tao/constrained/impls/admm/admm.c
## Examples
src/tao/constrained/tutorials/tomographyADMM.c
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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/tao/constrained/impls/admm/admm.c)
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