Function ReadIndexSet

Function Documentation

PetscErrorCode ReadIndexSet(MPI_Comm COMM, PetscViewer viewer, char *varname, IS *newIS, PetscInt *n)

Read data from a PetscViewer into an IS (Index Set, i.e. integer) object.

Parameters
  • COMM: The MPI communicator, PETSC_COMM_SELF or PETSC_COMM_WORLD.
  • viewer: A PetscViewer instance.
  • *varname: The new IS will have this name. For reading from hdf5 files, this name must match the dataset name in the file.
  • *newIS: The new IS object.
  • *n: The number of entries in the new object.