# MATCOLORINGID
implements the ID (incidence degree) coloring routine 


## Notes
Supports only distance two colorings (for computation of Jacobians)

This is a sequential algorithm


## References

- **** -*** TF Coleman and J More, "Estimation of sparse Jacobian matrices and graph coloring," SIAM Journal on Numerical Analysis, vol. 20, no. 1,
pp. 187-209, 1983.



## See Also
 `MatColoringCreate()`, `MatColoring`, `MatColoringSetType()`, `MATCOLORINGGREEDY`, `MatColoringType`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/color/impls/minpack/color.c.html#MATCOLORINGID">src/mat/color/impls/minpack/color.c</A>


---
[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/mat/color/impls/minpack/color.c)


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