VarOrderingCreateSubset

This function creates a new global variable ordering from an existing one on a subset of the fields.

#include "grid.h" 
int VarOrderingCreateSubset(VarOrdering order, int numFields, int *fields, PetscTruth contract, VarOrdering *newOrder)

Collective on Grid

	order	- The original ordering
	numFields	- The number of fields in the new ordering
	fields	- The fields in the new ordering
	contract	- The flag for contracting the indices

newOrder -The new ordering

If contract is PETSC_FALSE, this function returns a copy of the original ordering, but with some fields no longer active.

variable ordering, create