petsc-3.7.5 2017-01-01

DMDAVecGetArrayDOFRead

Returns a multiple dimension array that shares data with the underlying vector and is indexed using the global dimensions.

Synopsis

#include "petscdmda.h"   
PetscErrorCode  DMDAVecGetArrayDOFRead(DM da,Vec vec,void *array)

Not Collective

Input Parameter

	da	- the distributed array
	vec	- the vector, either a vector the same size as one obtained with DMCreateGlobalVector() or DMCreateLocalVector()

Output Parameter

array -the array

Notes

Call DMDAVecRestoreArrayDOFRead() once you have finished accessing the vector entries.

In C, the indexing is "backwards" from what expects: array[k][j][i][DOF] NOT array[i][j][k][DOF]!

In Fortran 90 you do not need a version of DMDAVecRestoreArrayDOF() just use DMDAVecRestoreArrayReadF90() and declare your array with one higher dimension, see src/dm/examples/tutorials/ex11f90.F

Keywords