1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
! 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 files COPYING and Copyright.html. COPYING can be found at the root *
! of the source code distribution tree; Copyright.html can be found at the *
! root level of an installed copy of the electronic HDF5 document set and *
! is linked from the top-level documents page. It can also be found at *
! http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
! access to either file, you may request a copy from help@hdfgroup.org. *
! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
!
!
! The following example shows how to write and read to/from an existing dataset.
! It opens the file created in the previous example, obtains the dataset
! identifier, writes the data to the dataset in the file,
! then reads the dataset to memory. Uses updated Fortran 2003 interface
! with different KINDs of integers and reals.
!
PROGRAM RWDSET_FORTRAN2003
USE ISO_C_BINDING
USE HDF5 ! This module contains all necessary modules
IMPLICIT NONE
INTEGER, PARAMETER :: int_kind_1 = SELECTED_INT_KIND(Fortran_INTEGER_1) !should map to INTEGER*1 on most modern processors
INTEGER, PARAMETER :: int_kind_4 = SELECTED_INT_KIND(Fortran_INTEGER_2) !should map to INTEGER*2 on most modern processors
INTEGER, PARAMETER :: int_kind_8 = SELECTED_INT_KIND(Fortran_INTEGER_4) !should map to INTEGER*4 on most modern processors
INTEGER, PARAMETER :: int_kind_16 = SELECTED_INT_KIND(Fortran_INTEGER_8) !should map to INTEGER*8 on most modern processors
INTEGER, PARAMETER :: real_kind_7 = SELECTED_REAL_KIND(Fortran_REAL_4) !should map to REAL*4 on most modern processors
INTEGER, PARAMETER :: real_kind_15 = SELECTED_REAL_KIND(Fortran_REAL_8) !should map to REAL*8 on most modern processors
CHARACTER(LEN=8), PARAMETER :: filename = "dsetf.h5" ! File name
CHARACTER(LEN=5), PARAMETER :: dsetname1 = "dset1" ! Dataset name
CHARACTER(LEN=5), PARAMETER :: dsetname2 = "dset2" ! Dataset name
CHARACTER(LEN=5), PARAMETER :: dsetname4 = "dset4" ! Dataset name
CHARACTER(LEN=5), PARAMETER :: dsetname8 = "dset8" ! Dataset name
CHARACTER(LEN=6), PARAMETER :: dsetnamer4 = "dsetr4" ! Dataset name
CHARACTER(LEN=6), PARAMETER :: dsetnamer8 = "dsetr8" ! Dataset name
INTEGER(HID_T) :: file_id ! File identifier
INTEGER(HID_T) :: dset_id1 ! Dataset identifier
INTEGER(HID_T) :: dset_id4 ! Dataset identifier
INTEGER(HID_T) :: dset_id8 ! Dataset identifier
INTEGER(HID_T) :: dset_id16 ! Dataset identifier
INTEGER(HID_T) :: dset_idr4 ! Dataset identifier
INTEGER(HID_T) :: dset_idr8 ! Dataset identifier
INTEGER :: error ! Error flag
INTEGER :: i
! Data buffers:
INTEGER(int_kind_1), DIMENSION(1:4), TARGET :: dset_data_i1
INTEGER(int_kind_4), DIMENSION(1:4), TARGET :: dset_data_i4, data_out_i4
INTEGER(int_kind_8), DIMENSION(1:4), TARGET :: dset_data_i8, data_out_i8
INTEGER(int_kind_16), DIMENSION(1:4), TARGET :: dset_data_i16, data_out_i16
INTEGER(int_kind_8), DIMENSION(1:4), TARGET :: data_out_i8a
REAL(real_kind_7), DIMENSION(1:4), TARGET :: dset_data_r7, data_out_r7
REAL(real_kind_15), DIMENSION(1:4), TARGET :: dset_data_r15, data_out_r15
INTEGER(HSIZE_T), DIMENSION(1:1) :: data_dims = (/4/)
INTEGER(HID_T) :: dspace_id ! Dataspace identifier
TYPE(C_PTR) :: f_ptr
!
! Initialize FORTRAN interface.
!
CALL h5open_f(error)
!
! Initialize the dset_data array.
!
DO i = 1, 4
dset_data_i1(i) = i
dset_data_i4(i) = i
dset_data_i8(i) = i
dset_data_i16(i) = i
dset_data_r7(i) = (i)*100.
dset_data_r15(i) = (i)*1000.
END DO
CALL h5fcreate_f(filename, H5F_ACC_TRUNC_F, file_id, error)
!
! Create dataspaces for datasets
!
CALL h5screate_simple_f(1, data_dims , dspace_id, error)
!
! Create the dataset.
!
CALL H5Dcreate_f(file_id, dsetname1, h5kind_to_type(int_kind_1,H5_INTEGER_KIND), dspace_id, dset_id1, error)
CALL H5Dcreate_f(file_id, dsetname2, h5kind_to_type(int_kind_4,H5_INTEGER_KIND), dspace_id, dset_id4, error)
CALL H5Dcreate_f(file_id, dsetname4, h5kind_to_type(int_kind_8,H5_INTEGER_KIND), dspace_id, dset_id8, error)
CALL H5Dcreate_f(file_id, dsetname8, h5kind_to_type(int_kind_16,H5_INTEGER_KIND), dspace_id, dset_id16, error)
CALL H5Dcreate_f(file_id, dsetnamer4, h5kind_to_type(real_kind_7,H5_REAL_KIND), dspace_id, dset_idr4, error)
CALL H5Dcreate_f(file_id, dsetnamer8, h5kind_to_type(real_kind_15,H5_REAL_KIND), dspace_id, dset_idr8, error)
!
! Write the dataset.
!
f_ptr = C_LOC(dset_data_i1(1))
CALL h5dwrite_f(dset_id1, h5kind_to_type(int_kind_1,H5_INTEGER_KIND), f_ptr, error)
f_ptr = C_LOC(dset_data_i4(1))
CALL h5dwrite_f(dset_id4, h5kind_to_type(int_kind_4,H5_INTEGER_KIND), f_ptr, error)
f_ptr = C_LOC(dset_data_i8(1))
CALL h5dwrite_f(dset_id8, h5kind_to_type(int_kind_8,H5_INTEGER_KIND), f_ptr, error)
f_ptr = C_LOC(dset_data_i16(1))
CALL h5dwrite_f(dset_id16, h5kind_to_type(int_kind_16,H5_INTEGER_KIND), f_ptr, error)
f_ptr = C_LOC(dset_data_r7(1))
CALL h5dwrite_f(dset_idr4, h5kind_to_type(real_kind_7,H5_REAL_KIND), f_ptr, error)
f_ptr = C_LOC(dset_data_r15(1))
CALL h5dwrite_f(dset_idr8, h5kind_to_type(real_kind_15,H5_REAL_KIND), f_ptr, error)
!
! Close the file
!
CALL h5fclose_f(file_id, error)
! Open the file
CALL h5fopen_f(filename, H5F_ACC_RDWR_F, file_id, error)
!
! Read the dataset.
!
! Read data back into an integer size that is larger then the original size used for
! writing the data
f_ptr = C_LOC(data_out_i8a(1))
CALL h5dread_f(dset_id1, h5kind_to_type(int_kind_8,H5_INTEGER_KIND), f_ptr, error)
f_ptr = C_LOC(data_out_i4(1))
CALL h5dread_f(dset_id4, h5kind_to_type(int_kind_4,H5_INTEGER_KIND), f_ptr, error)
f_ptr = C_LOC(data_out_i8(1))
CALL h5dread_f(dset_id8, h5kind_to_type(int_kind_8,H5_INTEGER_KIND), f_ptr, error)
f_ptr = C_LOC(data_out_i16(1))
CALL h5dread_f(dset_id16, h5kind_to_type(int_kind_16,H5_INTEGER_KIND), f_ptr, error)
f_ptr = C_LOC(data_out_r7(1))
CALL h5dread_f(dset_idr4, h5kind_to_type(real_kind_7,H5_REAL_KIND), f_ptr, error)
f_ptr = C_LOC(data_out_r15(1))
CALL h5dread_f(dset_idr8, h5kind_to_type(real_kind_15,H5_REAL_KIND), f_ptr, error)
! memory type
WRITE(*,'(A,4i8)' )'SELECTED_INT_KIND(Fortran_INTEGER_1): ',data_out_i8a
WRITE(*,'(A,4i8)' )'SELECTED_INT_KIND(Fortran_INTEGER_4): ',data_out_i4
WRITE(*,'(A,4i8)' )'SELECTED_INT_KIND(Fortran_INTEGER_8): ',data_out_i8
WRITE(*,'(A,4i8)' )'SELECTED_INT_KIND(Fortran_INTEGER_16): ',data_out_i16
WRITE(*,'(A,4(1x,f9.4))' )'SELECTED_REAL_KIND(Fortran_REAL_7): ',data_out_r7
WRITE(*,'(A,4(1x,f16.10))' )'SELECTED_REAL_KIND(Fortran_REAL_15): ',data_out_r15
!
! Close the dataset.
!
CALL h5dclose_f(dset_id1, error)
CALL h5dclose_f(dset_id4, error)
CALL h5dclose_f(dset_id8, error)
CALL h5dclose_f(dset_id16, error)
CALL h5dclose_f(dset_idr4, error)
CALL h5dclose_f(dset_idr8, error)
!
! Close the file.
!
CALL h5fclose_f(file_id, error)
!
! Close FORTRAN interface.
!
CALL h5close_f(error)
END PROGRAM RWDSET_FORTRAN2003
|
