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-! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
-! Copyright by The HDF Group. *
-! Copyright by the Board of Trustees of the University of Illinois. *
-! All rights reserved. *
-! *
-! This file is part of HDF5. The full HDF5 copyright notice, including *
-! terms governing use, modification, and redistribution, is contained in *
-! the files COPYING and Copyright.html. COPYING can be found at the root *
-! of the source code distribution tree; Copyright.html can be found at the *
-! root level of an installed copy of the electronic HDF5 document set and *
-! is linked from the top-level documents page. It can also be found at *
-! http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
-! access to either file, you may request a copy from help@hdfgroup.org. *
-! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
-!
-! This example shows how to create and write a dataset attribute.
-! It opens the existing file 'dset.h5', obtains the identifier of
-! the dataset "/dset", defines attribute's dataspace,
-! creates dataset attribute, writes the attribute, and then closes
-! the attribute's dataspace, attribute, dataset, and file.
-
- PROGRAM ATTREXAMPLE
-
-
- USE HDF5 ! This module contains all necessary modules
-
- IMPLICIT NONE
-
- CHARACTER(LEN=8), PARAMETER :: filename = "dsetf.h5" ! File name
- CHARACTER(LEN=4), PARAMETER :: dsetname = "dset" ! Dataset name
- CHARACTER(LEN=9), PARAMETER :: aname = "attr_long" ! Attribute name
-
- INTEGER(HID_T) :: file_id ! File identifier
- INTEGER(HID_T) :: dset_id ! Dataset identifier
- INTEGER(HID_T) :: attr_id ! Attribute identifier
- INTEGER(HID_T) :: aspace_id ! Attribute Dataspace identifier
- INTEGER(HID_T) :: atype_id ! Attribute Dataspace identifier
- INTEGER(HSIZE_T), DIMENSION(1) :: adims = (/2/) ! Attribute dimension
- INTEGER :: arank = 1 ! Attribure rank
- INTEGER(SIZE_T) :: attrlen ! Length of the attribute string
-
- CHARACTER(LEN=80), DIMENSION(2) :: attr_data ! Attribute data
-
- INTEGER :: error ! Error flag
- INTEGER(HSIZE_T), DIMENSION(1) :: data_dims
-
-
- !
- ! Initialize attribute's data
- !
- attr_data(1) = "Dataset character attribute"
- attr_data(2) = "Some other string here "
- attrlen = 80
- !
- ! Initialize FORTRAN interface.
- !
- CALL h5open_f(error)
-
- !
- ! Open an existing file.
- !
- CALL h5fopen_f (filename, H5F_ACC_RDWR_F, file_id, error)
-
- !
- ! Open an existing dataset.
- !
- CALL h5dopen_f(file_id, dsetname, dset_id, error)
-
- !
- ! Create scalar data space for the attribute.
- !
- CALL h5screate_simple_f(arank, adims, aspace_id, error)
- !
- ! Create datatype for the attribute.
- !
- CALL h5tcopy_f(H5T_NATIVE_CHARACTER, atype_id, error)
- CALL h5tset_size_f(atype_id, attrlen, error)
-
- !
- ! Create dataset attribute.
- !
- CALL h5acreate_f(dset_id, aname, atype_id, aspace_id, &
- attr_id, error)
-
- !
- ! Write the attribute data.
- !
- data_dims(1) = 2
- CALL h5awrite_f(attr_id, atype_id, attr_data, data_dims, error)
-
- !
- ! Close the attribute.
- !
- CALL h5aclose_f(attr_id, error)
-
- !
- ! Terminate access to the data space.
- !
- CALL h5sclose_f(aspace_id, error)
-
- !
- ! End access to the dataset and release resources used by it.
- !
- CALL h5dclose_f(dset_id, error)
-
- !
- ! Close the file.
- !
- CALL h5fclose_f(file_id, error)
-
- !
- ! Close FORTRAN interface.
- !
- CALL h5close_f(error)
-
- END PROGRAM ATTREXAMPLE
-