DMDAGetRay#
Returns a vector on process zero that contains a row or column of the values in a DMDA vector
Synopsis#
#include "petscdmda.h"
PetscErrorCode DMDAGetRay(DM da, DMDirection dir, PetscInt gp, Vec *newvec, VecScatter *scatter)
Collective on DMDA
Input Parameters#
da - the distributed array
dir - Cartesian direction, either DM_X, DM_Y, or DM_Z
gp - global grid point number in this direction
Output Parameters#
newvec - the new vector that can hold the values (size zero on all processes except process 0)
scatter - the VecScatter that will map from the original vector to the slice
Notes#
All processors that share the DMDA must call this with the same gp value
Level#
advanced
Location#
Index of all DMDA routines
Table of Contents for all manual pages
Index of all manual pages