petsc-3.7.3 2016-07-24
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# DMCoarsenHierarchy

Coarsens a DM object, all levels at once

### Synopsis

    #include "petscdm.h"
    #include "petscdmlabel.h"
    PetscErrorCode  DMCoarsenHierarchy(DM dm, PetscInt nlevels, DM dmc[])

Collective on DM

### Input Parameter

| dm | - the DM object
| nlevels | - the number of levels of coarsening

### Output Parameter

dmc -the coarsened DM hierarchy

### See Also

DMRefineHierarchy(), DMDestroy(), DMView(), DMCreateGlobalVector(), DMCreateInterpolation()

Level:developer
Location: src/dm/interface/dm.c
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages

### Examples

src/ksp/ksp/examples/tutorials/ex42.c.html