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! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
! Copyright by The HDF Group. *
! Copyright by the Board of Trustees of the University of Illinois. *
! All rights reserved. *
! *
! This file is part of HDF5. The full HDF5 copyright notice, including *
! terms governing use, modification, and redistribution, is contained in *
! the COPYING file, which can be found at the root of the source code *
! distribution tree, or in https://www.hdfgroup.org/licenses. *
! If you do not have access to either file, you may request a copy from *
! help@hdfgroup.org. *
! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
!
!
! This program creates two files, copy1.h5, and copy2.h5.
! In copy1.h5, it creates a 3x4 dataset called 'Copy1',
! and write 0's to this dataset.
! In copy2.h5, it create a 3x4 dataset called 'Copy2',
! and write 1's to this dataset.
! It closes both files, reopens both files, selects two
! points in copy1.h5 and writes values to them. Then it
! uses an H5Scopy to write the same selection to copy2.h5.
! Program reopens the files, and reads and prints the contents of
! the two datasets.
!
PROGRAM SELECTEXAMPLE
USE HDF5 ! This module contains all necessary modules
IMPLICIT NONE
CHARACTER(LEN=8), PARAMETER :: filename1 = "copy1.h5" ! File name
CHARACTER(LEN=8), PARAMETER :: filename2 = "copy2.h5" !
CHARACTER(LEN=5), PARAMETER :: dsetname1 = "Copy1" ! Dataset name
CHARACTER(LEN=5), PARAMETER :: dsetname2 = "Copy2" !
INTEGER, PARAMETER :: RANK = 2 ! Dataset rank
INTEGER(SIZE_T), PARAMETER :: NUMP = 2 ! Number of points selected
INTEGER(HID_T) :: file1_id ! File1 identifier
INTEGER(HID_T) :: file2_id ! File2 identifier
INTEGER(HID_T) :: dset1_id ! Dataset1 identifier
INTEGER(HID_T) :: dset2_id ! Dataset2 identifier
INTEGER(HID_T) :: dataspace1 ! Dataspace identifier
INTEGER(HID_T) :: dataspace2 ! Dataspace identifier
INTEGER(HID_T) :: memspace ! memspace identifier
INTEGER(HSIZE_T), DIMENSION(1) :: dimsm = (/2/)
! Memory dataspace dimensions
INTEGER(HSIZE_T), DIMENSION(2) :: dimsf = (/3,4/)
! File dataspace dimensions
INTEGER(HSIZE_T), DIMENSION(RANK,NUMP) :: coord ! Elements coordinates
! in the file
INTEGER, DIMENSION(3,4) :: buf1, buf2, bufnew ! Data buffers
INTEGER, DIMENSION(2) :: val = (/53, 59/) ! Values to write
INTEGER :: memrank = 1 ! Rank of the dataset in memory
INTEGER :: i, j
INTEGER :: error ! Error flag
INTEGER(HSIZE_T), DIMENSION(2) :: data_dims
!
! Create two files containing identical datasets. Write 0's to one
! and 1's to the other.
!
!
! Data initialization.
!
do i = 1, 3
do j = 1, 4
buf1(i,j) = 0;
end do
end do
do i = 1, 3
do j = 1, 4
buf2(i,j) = 1;
end do
end do
!
! Initialize FORTRAN interface.
!
CALL h5open_f(error)
!
! Create file1, file2 using default properties.
!
CALL h5fcreate_f(filename1, H5F_ACC_TRUNC_F, file1_id, error)
CALL h5fcreate_f(filename2, H5F_ACC_TRUNC_F, file2_id, error)
!
! Create the data space for the datasets.
!
CALL h5screate_simple_f(RANK, dimsf, dataspace1, error)
CALL h5screate_simple_f(RANK, dimsf, dataspace2, error)
!
! Create the datasets with default properties.
!
CALL h5dcreate_f(file1_id, dsetname1, H5T_NATIVE_INTEGER, dataspace1, &
dset1_id, error)
CALL h5dcreate_f(file2_id, dsetname2, H5T_NATIVE_INTEGER, dataspace2, &
dset2_id, error)
!
! Write the datasets.
!
data_dims(1) = 3
data_dims(2) = 4
CALL h5dwrite_f(dset1_id, H5T_NATIVE_INTEGER, buf1, data_dims, error)
CALL h5dwrite_f(dset2_id, H5T_NATIVE_INTEGER, buf2, data_dims, error)
!
! Close the dataspace for the datasets.
!
CALL h5sclose_f(dataspace1, error)
CALL h5sclose_f(dataspace2, error)
!
! Close the datasets.
!
CALL h5dclose_f(dset1_id, error)
CALL h5dclose_f(dset2_id, error)
!
! Close the files.
!
CALL h5fclose_f(file1_id, error)
CALL h5fclose_f(file2_id, error)
!
! Open the two files. Select two points in one file, write values to
! those point locations, then do H5Scopy and write the values to the
! other file. Close files.
!
!
! Open the files.
!
CALL h5fopen_f (filename1, H5F_ACC_RDWR_F, file1_id, error)
CALL h5fopen_f (filename2, H5F_ACC_RDWR_F, file2_id, error)
!
! Open the datasets.
!
CALL h5dopen_f(file1_id, dsetname1, dset1_id, error)
CALL h5dopen_f(file2_id, dsetname2, dset2_id, error)
!
! Get dataset1's dataspace identifier.
!
CALL h5dget_space_f(dset1_id, dataspace1, error)
!
! Create memory dataspace.
!
CALL h5screate_simple_f(memrank, dimsm, memspace, error)
!
! Set the selected point positions. Because Fortran array index starts
! from 1, so add one to the actual select points in C.
!
coord(1,1) = 1
coord(2,1) = 2
coord(1,2) = 1
coord(2,2) = 4
!
! Select the elements in file space.
!
CALL h5sselect_elements_f(dataspace1, H5S_SELECT_SET_F, RANK, NUMP,&
coord, error)
!
! Write value into the selected points in dataset1.
!
data_dims(1) = 2
CALL H5dwrite_f(dset1_id, H5T_NATIVE_INTEGER, val, data_dims, error, &
mem_space_id=memspace, file_space_id=dataspace1)
!
! Copy the daspace1 into dataspace2.
!
CALL h5scopy_f(dataspace1, dataspace2, error)
!
! Write value into the selected points in dataset2.
!
data_dims(1) = 2
CALL H5dwrite_f(dset2_id, H5T_NATIVE_INTEGER, val, data_dims, error, &
mem_space_id=memspace, file_space_id=dataspace2)
!
! Close the dataspace for the datasets.
!
CALL h5sclose_f(dataspace1, error)
CALL h5sclose_f(dataspace2, error)
!
! Close the memoryspace.
!
CALL h5sclose_f(memspace, error)
!
! Close the datasets.
!
CALL h5dclose_f(dset1_id, error)
CALL h5dclose_f(dset2_id, error)
!
! Close the files.
!
CALL h5fclose_f(file1_id, error)
CALL h5fclose_f(file2_id, error)
!
! Open both files and print the contents of the datasets.
!
!
! Open the files.
!
CALL h5fopen_f (filename1, H5F_ACC_RDWR_F, file1_id, error)
CALL h5fopen_f (filename2, H5F_ACC_RDWR_F, file2_id, error)
!
! Open the datasets.
!
CALL h5dopen_f(file1_id, dsetname1, dset1_id, error)
CALL h5dopen_f(file2_id, dsetname2, dset2_id, error)
!
! Read dataset from the first file.
!
data_dims(1) = 3
data_dims(2) = 4
CALL h5dread_f(dset1_id, H5T_NATIVE_INTEGER, bufnew, data_dims, error)
!
! Display the data read from dataset "Copy1"
!
write(*,*) "The data in dataset Copy1 is: "
do i = 1, 3
print *, (bufnew(i,j), j = 1,4)
end do
!
! Read dataset from the second file.
!
CALL h5dread_f(dset2_id, H5T_NATIVE_INTEGER, bufnew, data_dims, error)
!
! Display the data read from dataset "Copy2"
!
write(*,*) "The data in dataset Copy2 is: "
do i = 1, 3
print *, (bufnew(i,j), j = 1,4)
end do
!
! Close datasets.
!
CALL h5dclose_f(dset1_id, error)
CALL h5dclose_f(dset2_id, error)
!
! Close files.
!
CALL h5fclose_f(file1_id, error)
CALL h5fclose_f(file2_id, error)
!
! Close FORTRAN interface.
!
CALL h5close_f(error)
END PROGRAM SELECTEXAMPLE
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