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+! ************************************************************
+!
+! 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 version 1.8
+!
+! ************************************************************
+
+! An optional example for determining the correct HDF5 version
+! for picking the correct HDF5 API parameters. This is not
+! part of the HDF5 library.
+#include "h5_version.h"
+
+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_F",/)')
+#if H5_VERSION_GE(1,12,0)
+ ELSE IF (layout.EQ.H5D_VIRTUAL_F)THEN
+ WRITE(*,'("H5D_VIRTUAL_F",/)')
+#endif
+ ELSE
+ WRITE(*,'("Layout Error",/)')
+ 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