! ************************************************************ ! ! This example shows how to read and write data to a compact ! dataset. The program first writes integers to a compact ! 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 verion 1.8 ! ! ************************************************************ PROGRAM main USE HDF5 IMPLICIT NONE CHARACTER(LEN=17), PARAMETER :: filename = "h5ex_d_compact.h5" CHARACTER(LEN=3) , PARAMETER :: dataset = "DS1" INTEGER , PARAMETER :: dim0 = 4 INTEGER , PARAMETER :: dim1 = 7 INTEGER :: hdferr INTEGER :: layout INTEGER(HID_T) :: file, space, dset, dcpl ! Handles INTEGER(HSIZE_T), DIMENSION(1:2) :: dims = (/dim0, dim1/) 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 maximum size to NULL sets the maximum ! size to be the current size. ! CALL h5screate_simple_f(2, dims, space, hdferr) ! ! Create the dataset creation property list, set the layout to ! compact. ! CALL h5pcreate_f(H5P_DATASET_CREATE_F, dcpl, hdferr) CALL h5pset_layout_f(dcpl, H5D_COMPACT_F, hdferr) ! ! Create the dataset. We will use all default properties for this ! example. ! CALL h5dcreate_f(file, dataset, H5T_STD_I32LE, space, dset, hdferr, dcpl) ! ! Write the data to the dataset. ! CALL h5dwrite_f(dset, H5T_NATIVE_INTEGER, wdata, dims, hdferr) ! ! Close and release resources. ! CALL h5pclose_f(dcpl , hdferr) 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) ! ! Retrieve the dataset creation property list, and print the ! storage layout. ! CALL h5dget_create_plist_f(dset, dcpl, hdferr) CALL h5pget_layout_f(dcpl, layout, hdferr) WRITE(*,'(/,"Storage layout for ", A," is: ")', ADVANCE='NO') dataset IF(layout.EQ.H5D_COMPACT_F)THEN WRITE(*,'("H5D_COMPACT_F",/)') ELSE IF (layout.EQ.H5D_CONTIGUOUS_F)THEN WRITE(*,'("H5D_CONTIGUOUS_F",/)') ELSE IF (layout.EQ.H5D_CHUNKED_F)THEN WRITE(*,'("H5D_CHUNKED",/)') ENDIF ! ! 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 ! ! Close and release resources. ! CALL h5pclose_f(dcpl , hdferr) CALL h5dclose_f(dset , hdferr) CALL h5fclose_f(file , hdferr) END PROGRAM main