!************************************************************ ! ! This example shows how to read and write integer datatypes ! to a dataset. The program first writes integers to a ! dataset with a dataspace 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 ! with --enable-fortran2003 ! !************************************************************ PROGRAM main USE HDF5 USE ISO_C_BINDING IMPLICIT NONE CHARACTER(LEN=17), PARAMETER :: filename = "h5ex_t_int_F03.h5" CHARACTER(LEN=3) , PARAMETER :: dataset = "DS1" INTEGER , PARAMETER :: dim0 = 4 INTEGER , PARAMETER :: dim1 = 7 INTEGER(HID_T) :: file, space, dset ! Handles INTEGER :: hdferr INTEGER(hsize_t), DIMENSION(1:2) :: dims = (/dim0, dim1/) INTEGER, DIMENSION(1:dim0, 1:dim1), TARGET :: wdata ! Write buffer INTEGER, DIMENSION(:,:), ALLOCATABLE, TARGET :: rdata ! Read buffer INTEGER(HSIZE_T), DIMENSION(1:2) :: maxdims INTEGER :: i, j TYPE(C_PTR) :: f_ptr ! ! 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 maximum size to be the current size. ! CALL h5screate_simple_f(2, dims, space, hdferr) ! ! Create the dataset and write the integer data to it. In this ! example we will save the data as 64 bit big endian integers, ! regardless of the native integer type. The HDF5 library ! automatically converts between different integer types. ! CALL h5dcreate_f(file, dataset, H5T_STD_I64BE, space, dset, hdferr) f_ptr = C_LOC(wdata(1,1)) CALL h5dwrite_f(dset, H5T_NATIVE_INTEGER, f_ptr, hdferr) ! ! Close and release resources. ! CALL h5dclose_f(dset , hdferr) CALL h5sclose_f(space, hdferr) CALL h5fclose_f(file , hdferr) ! ! Open file and dataset. ! CALL h5fopen_f(filename, H5F_ACC_RDONLY_F, file, hdferr) CALL h5dopen_f(file, dataset, dset, hdferr) ! ! Get dataspace and allocate memory for read buffer. ! CALL h5dget_space_f(dset,space, hdferr) CALL h5sget_simple_extent_dims_f(space, dims, maxdims, hdferr) ALLOCATE(rdata(1:dims(1),1:dims(2))) ! ! Read the data. ! f_ptr = C_LOC(rdata(1,1)) CALL h5dread_f( dset, H5T_NATIVE_INTEGER, f_ptr, hdferr) ! ! Output the data to the screen. ! WRITE(*, '(A,":")') dataset DO i=1, dims(1) WRITE(*,'(" [")', ADVANCE='NO') WRITE(*,'(80i3)', ADVANCE='NO') rdata(i,1:dims(2)) WRITE(*,'(" ]")') ENDDO ! ! Close and release resources. ! DEALLOCATE(rdata) CALL h5dclose_f(dset , hdferr) CALL h5sclose_f(space, hdferr) CALL h5fclose_f(file , hdferr) END PROGRAM main