petsc-3.8.4 2018-03-24

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DMCreateAggregates

Gets the aggregates that map between grids associated with two DMs.

Synopsis

#include "petscdm.h"          
#include "petscdmlabel.h"     
#include "petscds.h"     
PetscErrorCode  DMCreateAggregates(DM dmc, DM dmf, Mat *rest)

Collective on DM

Input Parameters

	dmc	- the coarse grid DM
	dmf	- the fine grid DM

Output Parameters

rest -the restriction matrix (transpose of the projection matrix)

Keywords

interpolation, restriction, multigrid

See Also

DMRefine(), DMCreateInjection(), DMCreateInterpolation()

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