ISLocalToGlobalMappingCreate

Creates a mapping between a local (0 to n) ordering and a global parallel ordering.

#include "petscsys.h" 
#include "petscis.h"  
int ISLocalToGlobalMappingCreate(MPI_Comm cm,int n,const int indices[],ISLocalToGlobalMapping *mapping)

Not Collective, but communicator may have more than one process

	comm	- MPI communicator
	n	- the number of local elements
	indices	- the global index for each local element

mapping -new mapping data structure