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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. *
+! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+!
+!
+! The following example shows how to write and read to/from an existing dataset.
+! It opens the file created in the previous example, obtains the dataset
+! identifier, writes the data to the dataset in the file,
+! then reads the dataset to memory.
+!
+! This example is used in the HDF5 Tutorial.
+
+PROGRAM H5_RDWT
+
+ 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
+
+ INTEGER(HID_T) :: file_id ! File identifier
+ INTEGER(HID_T) :: dset_id ! Dataset identifier
+
+ INTEGER :: error ! Error flag
+ INTEGER :: i, j
+
+ INTEGER, DIMENSION(4,6) :: dset_data, data_out ! Data buffers
+ INTEGER(HSIZE_T), DIMENSION(2) :: data_dims
+
+ !
+ ! Initialize the dset_data array.
+ !
+ DO i = 1, 4
+ DO j = 1, 6
+ dset_data(i,j) = (i-1)*6 + j
+ END DO
+ END DO
+
+ !
+ ! 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)
+
+ !
+ ! Write the dataset.
+ !
+ data_dims(1) = 4
+ data_dims(2) = 6
+ CALL h5dwrite_f(dset_id, H5T_NATIVE_INTEGER, dset_data, data_dims, error)
+
+ !
+ ! Read the dataset.
+ !
+ CALL h5dread_f(dset_id, H5T_NATIVE_INTEGER, data_out, data_dims, error)
+
+ !
+ ! Close the dataset.
+ !
+ CALL h5dclose_f(dset_id, error)
+
+ !
+ ! Close the file.
+ !
+ CALL h5fclose_f(file_id, error)
+
+ !
+ ! Close FORTRAN interface.
+ !
+ CALL h5close_f(error)
+
+END PROGRAM H5_RDWT
+
+
+