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!
! This example shows how to write and read a hyperslab.
!
PROGRAM SELECTEXAMPLE
USE HDF5 ! This module contains all necessary modules
IMPLICIT NONE
CHARACTER(LEN=7), PARAMETER :: filename = "sdsf.h5" ! File name
CHARACTER(LEN=8), PARAMETER :: dsetname = "IntArray" ! Dataset name
INTEGER(HID_T) :: file_id ! File identifier
INTEGER(HID_T) :: dset_id ! Dataset identifier
INTEGER(HID_T) :: dataspace ! Dataspace identifier
INTEGER(HID_T) :: memspace ! memspace identifier
INTEGER(HSIZE_T), DIMENSION(3) :: dimsm = (/7,7,3/) ! Dataset dimensions
! in memory
INTEGER(HSIZE_T), DIMENSION(2) :: dims_out ! Buffer to read in dataset
! dimesions
INTEGER(HSIZE_T), DIMENSION(2) :: dimsf = (/5,6/) ! Dataset dimensions.
INTEGER(HSIZE_T), DIMENSION(2) :: count = (/3,4/)
! Size of the hyperslab in the file
INTEGER(HSIZE_T), DIMENSION(2) :: offset = (/1,2/)
!hyperslab offset in the file
INTEGER(HSIZE_T), DIMENSION(3) :: count_out = (/3,4,1/)
!Size of the hyperslab in memory
INTEGER(HSIZE_T), DIMENSION(3) :: offset_out = (/3,0,0/)
!hyperslab offset in memory
INTEGER, DIMENSION(5,6) :: data ! Data to write
INTEGER, DIMENSION(7,7,3) :: data_out ! Output buffer
INTEGER :: dsetrank = 2 ! Dataset rank ( in file )
INTEGER :: memrank = 3 ! Dataset rank ( in memory )
INTEGER :: rank
INTEGER :: i, j, k
INTEGER :: error, error_n ! Error flags
!
! Write data to the HDF5 file.
!
!
! Data initialization.
!
do i = 1, 5
do j = 1, 6
data(i,j) = (i-1) + (j-1);
end do
end do
!
! 0, 1, 2, 3, 4, 5
! 1, 2, 3, 4, 5, 6
! 2, 3, 4, 5, 6, 7
! 3, 4, 5, 6, 7, 8
! 4, 5, 6, 7, 8, 9
!
!
! Initialize FORTRAN predefined datatypes
!
CALL h5init_types_f(error)
!
! Create a new file using default properties.
!
CALL h5fcreate_f(filename, H5F_ACC_TRUNC_F, file_id, error)
!
! Create the data space for the dataset.
!
CALL h5screate_simple_f(dsetrank, dimsf, dataspace, error)
!
! Create the dataset with default properties.
!
CALL h5dcreate_f(file_id, dsetname, H5T_NATIVE_INTEGER, dataspace, &
dset_id, error)
!
! Write the dataset.
!
CALL h5dwrite_f(dset_id, H5T_NATIVE_INTEGER, data, error)
!
! Close the dataspace for the dataset.
!
CALL h5sclose_f(dataspace, error)
!
! Close the dataset.
!
CALL h5dclose_f(dset_id, error)
!
! Close the file.
!
CALL h5fclose_f(file_id, error)
!
! This part of the code reads the hyperslab from the sds.h5 file just
! created, into a 2-dimensional plane of the 3-dimensional dataset.
!
!
! Initialize data_out array.
!
do i = 1, 7
do j = 1, 7
do k = 1,3
data_out(i,j,k) = 0;
end do
end do
end do
!
! Open the file.
!
CALL h5fopen_f (filename, H5F_ACC_RDONLY_F, file_id, error)
!
! Open the dataset.
!
CALL h5dopen_f(file_id, dsetname, dset_id, error)
!
! Get dataset's dataspace identifier.
!
CALL h5dget_space_f(dset_id, dataspace, error)
!
! Select hyperslab in the dataset.
!
CALL h5sselect_hyperslab_f(dataspace, H5S_SELECT_SET_F, &
offset, count, error)
!
! Create memory dataspace.
!
CALL h5screate_simple_f(memrank, dimsm, memspace, error)
!
! Select hyperslab in memory.
!
CALL h5sselect_hyperslab_f(memspace, H5S_SELECT_SET_F, &
offset_out, count_out, error)
!
! Read data from hyperslab in the file into the hyperslab in
! memory and display.
!
CALL H5Dread_f(dset_id, H5T_NATIVE_INTEGER, data_out, error, &
memspace, dataspace)
!
! Display data_out array
!
do i = 1, 7
print *, (data_out(i,j,1), j = 1,7)
end do
! 0 0 0 0 0 0 0
! 0 0 0 0 0 0 0
! 0 0 0 0 0 0 0
! 3 4 5 6 0 0 0
! 4 5 6 7 0 0 0
! 5 6 7 8 0 0 0
! 0 0 0 0 0 0 0
!
!
! Close the dataspace for the dataset.
!
CALL h5sclose_f(dataspace, error)
!
! Close the memoryspace.
!
CALL h5sclose_f(memspace, error)
!
! Close the dataset.
!
CALL h5dclose_f(dset_id, error)
!
! Close the file.
!
CALL h5fclose_f(file_id, error)
!
! Close FORTRAN predefined datatypes.
!
CALL h5close_types_f(error)
END PROGRAM SELECTEXAMPLE
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