SDAGetCorners

Returns the global (x,y,z) indices of the lower left corner of the local region, excluding ghost points.

#include "da.h"   
int SDAGetCorners(SDA da,int *x,int *y,int *z,int *m,int *n,int *p)

da -the distributed array

x,y,z -the corner indices

   y and z are optional (used for 2D and 3D problems)

m,n,p -widths in the corresponding directions

   n and p are optional (used for 2D and 3D problems)

Any of y, z, n, and p should be set to PETSC_NULL if not needed.

distributed array, get, corners, nodes, local indices