petsc-3.7.3 2016-07-24
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# DMCompositeGetAccessArray

Allows one to access the individual packed vectors in their global representation.

### Synopsis

    #include "petscdmcomposite.h"
    PetscErrorCode  DMCompositeGetAccessArray(DM dm,Vec pvec,PetscInt nwanted,const PetscInt *wanted,Vec *vecs)

Collective on DMComposite

### Input Parameters

| dm | - the packer object
| pvec | - packed vector
| nwanted | - number of vectors wanted
| wanted | - sorted array of vectors wanted, or NULL to get all vectors

### Output Parameters

vecs -array of requested global vectors (must be allocated)

Notes: Use DMCompositeRestoreAccessArray() to return the vectors when you no longer need them

### See Also

DMCompositeGetAccess(), DMCompositeGetEntries(), DMCompositeScatter(), DMCompositeGather()

Level:advanced
Location: src/dm/impls/composite/pack.c
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages