petsc-3.14.5 2021-03-03
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# DMSwarmCreateGlobalVectorFromField

Creates a Vec object sharing the array associated with a given field

### Synopsis

    #include "petscdmswarm.h"
    PetscErrorCode DMSwarmCreateGlobalVectorFromField(DM dm,const char fieldname[],Vec *vec)

Collective on dm

### Input parameters

| dm | - a DMSwarm
| fieldname | - the textual name given to a registered field

### Output parameter

| vec | - the vector

### Notes

The vector must be returned using a matching call to DMSwarmDestroyGlobalVectorFromField().

### See Also

DMSwarmRegisterPetscDatatypeField(), DMSwarmDestroyGlobalVectorFromField()

### Level

beginner

### Location

src/dm/impls/swarm/swarm.c

### Examples

src/dm/tutorials/swarm_ex1.c.html
src/dm/tutorials/swarm_ex2.c.html
Index of all DMSWARM routines
Table of Contents for all manual pages
Index of all manual pages