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+!************************************************************
+!
+! This example shows how to read and write data to a
+! dataset by hyberslabs. The program first writes integers
+! in a hyperslab selection 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. Finally it reads the data again using a
+! different hyperslab selection, and outputs the result to
+! the screen.
+!
+! This file is intended for use with HDF5 Library version 1.8
+!
+! ************************************************************/
+PROGRAM main
+
+ USE HDF5
+
+ IMPLICIT NONE
+
+ CHARACTER(LEN=15), PARAMETER :: filename = "h5ex_d_hyper.h5"
+ CHARACTER(LEN=3) , PARAMETER :: dataset = "DS1"
+ INTEGER , PARAMETER :: dim0 = 6
+ INTEGER , PARAMETER :: dim1 = 8
+
+ INTEGER(HID_T) :: file, space, dset ! Handles
+ INTEGER :: hdferr
+ INTEGER(HSIZE_T), DIMENSION(1:2) :: dims = (/dim0, dim1/)
+ INTEGER(HSIZE_T), DIMENSION(1:2) :: start, stride, count, block
+
+ INTEGER, DIMENSION(1:dim0, 1:dim1) :: wdata, & ! Write buffer
+ rdata ! Read buffer
+ INTEGER :: i, j
+
+ !
+ ! Initialize FORTRAN interface.
+ !
+ CALL h5open_f(hdferr)
+ ! Initialize data to "1", to make it easier to see the selections.
+ !
+ wdata = 1
+ !
+ ! Print the data to the screen.
+ !
+ WRITE(*, '(/,"Original Data:")')
+ DO i=1, dim0
+ WRITE(*,'(" [")', ADVANCE='NO')
+ WRITE(*,'(80i3)', ADVANCE='NO') wdata(i,:)
+ WRITE(*,'(" ]")')
+ 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. We will use all default properties for this
+ ! example.
+ !
+ CALL h5dcreate_f(file, dataset, H5T_STD_I32LE, space, dset, hdferr)
+ !
+ ! Define and select the first part of the hyperslab selection.
+ !
+ start = 0
+ stride = 3
+ count(1:2) = (/2,3/)
+ block = 2
+ CALL h5sselect_hyperslab_f (space, H5S_SELECT_SET_F, start, count, &
+ hdferr, stride, block)
+ !
+ ! Define and select the second part of the hyperslab selection,
+ ! which is subtracted from the first selection by the use of
+ ! H5S_SELECT_NOTB
+ !
+ block = 1
+ CALL h5sselect_hyperslab_f (space, H5S_SELECT_NOTB_F, start, count, &
+ hdferr, stride, block)
+ !
+ ! Write the data to the dataset.
+ !
+ CALL h5dwrite_f(dset, H5T_NATIVE_INTEGER, wdata, dims, hdferr, file_space_id=space)
+ !
+ ! 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(*, '(/,"Data as written to disk by hyberslabs:")')
+ DO i=1, dim0
+ WRITE(*,'(" [")', ADVANCE='NO')
+ WRITE(*,'(80i3)', ADVANCE='NO') rdata(i,:)
+ WRITE(*,'(" ]")')
+ ENDDO
+ !
+ ! Initialize the read array.
+ !
+ rdata = 0
+ !
+ ! Define and select the hyperslab to use for reading.
+ !
+ CALL h5dget_space_f(dset, space, hdferr)
+
+ start(1:2)=(/0,1/)
+ stride = 4
+ count = 2
+ BLOCK(1:2)=(/2,3/)
+
+ CALL h5sselect_hyperslab_f (space, H5S_SELECT_SET_F, start, count, &
+ hdferr, stride, block)
+ !
+ ! Read the data using the previously defined hyperslab.
+ !
+ CALL h5dread_f(dset, H5T_NATIVE_INTEGER, rdata, dims, hdferr, file_space_id=space)
+ !
+ ! Output the DATA to the screen.
+ !
+ WRITE(*, '(/,"Data as read from disk by hyberslabs:")')
+ 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 h5sclose_f(space, hdferr)
+ CALL h5fclose_f(file , hdferr)
+
+END PROGRAM main