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! ************************************************************
!
! This example shows how to read and write data to a
! dataset. The program first writes integers to a dataset
! with dataspace dimensions of DIM0xDIM1, then closes the
! file. Next, it reopens the file, reads back the data, and
! outputs it to the screen.
!
! This file is intended for use with HDF5 Library version 1.8
!
! ************************************************************
PROGRAM main
USE HDF5
IMPLICIT NONE
CHARACTER(LEN=14), PARAMETER :: filename = "h5ex_d_rdwr.h5"
CHARACTER(LEN=3) , PARAMETER :: dataset = "DS1"
INTEGER , PARAMETER :: dim0 = 4
INTEGER , PARAMETER :: dim1 = 7
INTEGER :: hdferr
INTEGER(HID_T) :: file, space, dset ! handles
INTEGER(HSIZE_T), DIMENSION(1:2) :: dims = (/dim0, dim1/) ! size read/write buffer
INTEGER , DIMENSION(1:dim0,1:dim1) :: wdata, & ! Write buffer
rdata ! Read buffer
INTEGER :: i, j
!
! Initialize FORTRAN interface.
!
CALL h5open_f(hdferr)
!
! Initialize data.
!
DO i = 1, dim0
DO j = 1, dim1
wdata(i,j) = (i-1)*(j-1)-(j-1)
ENDDO
ENDDO
!
! Create a new file using the default properties.
!
CALL h5fcreate_f(filename, H5F_ACC_TRUNC_F, file, hdferr)
!
! Create dataspace. Setting size to be the current size.
!
CALL h5screate_simple_f(2, dims, space, hdferr)
!
! Create the dataset. We will use all default properties for this
! example.
!
CALL h5dcreate_f(file, dataset, H5T_STD_I32LE, space, dset, hdferr)
!
! Write the data to the dataset.
!
CALL h5dwrite_f(dset, H5T_NATIVE_INTEGER, wdata, dims, hdferr)
!
! Close and release resources.
!
CALL h5dclose_f(dset , hdferr)
CALL h5sclose_f(space, hdferr)
CALL h5fclose_f(file , hdferr)
!
! Now we begin the read section of this example.
!
!
! Open file and dataset using the default properties.
!
CALL h5fopen_f(filename, H5F_ACC_RDONLY_F, file, hdferr)
CALL h5dopen_f (file, dataset, dset, hdferr)
!
! Read the data using the default properties.
!
CALL h5dread_f(dset, H5T_NATIVE_INTEGER, rdata, dims, hdferr)
!
! Output the data to the screen.
!
WRITE(*, '(/,A,":")') dataset
DO i=1, dim0
WRITE(*,'(" [")', ADVANCE='NO')
WRITE(*,'(80i3)', ADVANCE='NO') rdata(i,:)
WRITE(*,'(" ]")')
ENDDO
WRITE(*, '(/)')
!
! Close and release resources.
!
CALL h5dclose_f(dset , hdferr)
CALL h5fclose_f(file , hdferr)
END PROGRAM main
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