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+!
+! This example shows how to create a dataset in a particular group.
+! It opens the file created in the previous example and creates two datasets.
+! Absolute and relative dataset names are used.
+!
+
+
+ PROGRAM GRPDSETEXAMPLE
+
+ USE HDF5 ! This module contains all necessary modules
+
+ IMPLICIT NONE
+
+ CHARACTER(LEN=10), PARAMETER :: filename = "groupsf.h5" ! File name
+ CHARACTER(LEN=15), PARAMETER :: groupname = "MyGroup/Group_A" ! Group name
+ CHARACTER(LEN=13), PARAMETER :: dsetname1 = "MyGroup/dset1" ! Dataset name
+ CHARACTER(LEN=5), PARAMETER :: dsetname2 = "dset2" ! dataset name
+
+ INTEGER(HID_T) :: file_id ! File identifier
+ INTEGER(HID_T) :: group_id ! Group identifier
+ INTEGER(HID_T) :: dataset_id ! Dataset identifier
+ INTEGER(HID_T) :: dataspace_id ! Data space identifier
+
+ INTEGER :: i, j
+ INTEGER :: error ! Error flag
+
+ INTEGER, DIMENSION(3,3) :: dset1_data ! Data arrays
+ INTEGER, DIMENSION(2,10) :: dset2_data !
+
+ INTEGER(HSIZE_T), DIMENSION(2) :: dims1 = (/3,3/) ! Datasets dimensions
+ INTEGER(HSIZE_T), DIMENSION(2) :: dims2 = (/2,10/)!
+
+ INTEGER :: rank = 2 ! Datasets rank
+
+ !
+ !Initialize dset1_data array
+ !
+ do i = 1, 3
+ do j = 1, 3
+ dset1_data(i,j) = j;
+ end do
+ end do
+
+
+ !
+ !Initialize dset2_data array
+ !
+ do i = 1, 2
+ do j = 1, 10
+ dset2_data(i,j) = j;
+ end do
+ end do
+
+ !
+ ! Initialize FORTRAN predefined datatypes.
+ !
+ CALL h5open_f(error)
+
+ !
+ ! Open an existing file.
+ !
+ CALL h5fopen_f (filename, H5F_ACC_RDWR_F, file_id, error)
+
+ !
+ ! Create the data space for the first dataset.
+ !
+ CALL h5screate_simple_f(rank, dims1, dataspace_id, error)
+
+ !
+ ! Create a dataset in group "MyGroup" with default properties.
+ !
+ CALL h5dcreate_f(file_id, dsetname1, H5T_NATIVE_INTEGER, dataspace_id, &
+ dataset_id, error)
+
+ !
+ ! Write the first dataset.
+ !
+ CALL h5dwrite_f(dataset_id, H5T_NATIVE_INTEGER, dset1_data, error)
+
+ !
+ ! Close the dataspace for the first dataset.
+ !
+ CALL h5sclose_f(dataspace_id, error)
+
+ !
+ ! Close the first dataset.
+ !
+ CALL h5dclose_f(dataset_id, error)
+
+ !
+ ! Open an existing group in the specified file.
+ !
+ CALL h5gopen_f(file_id, groupname, group_id, error)
+
+ !
+ !Create the data space for the second dataset.
+ !
+ CALL h5screate_simple_f(rank, dims2, dataspace_id, error)
+
+ !
+ ! Create the second dataset in group "Group_A" with default properties.
+ !
+ CALL h5dcreate_f(group_id, dsetname2, H5T_NATIVE_INTEGER, dataspace_id, &
+ dataset_id, error)
+
+ !
+ ! Write the second dataset.
+ !
+ CALL h5dwrite_f(dataset_id, H5T_NATIVE_INTEGER, dset2_data, error)
+
+ !
+ ! Close the dataspace for the second dataset.
+ !
+ CALL h5sclose_f(dataspace_id, error)
+
+ !
+ ! Close the second dataset.
+ !
+ CALL h5dclose_f(dataset_id, error)
+
+ !
+ ! Close the group.
+ !
+ CALL h5gclose_f(group_id, error)
+
+ !
+ ! Close the file.
+ !
+ CALL h5fclose_f(file_id, error)
+
+ !
+ ! Close FORTRAN predefined datatypes.
+ !
+ CALL h5close_f(error)
+
+ END PROGRAM GRPDSETEXAMPLE