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
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
! 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 example shows how to write and read a hyperslab.
!
PROGRAM SELECTEXAMPLE
USE HDF5 ! This module contains all necessary modules
IMPLICIT NONE
CHARACTER(LEN=7), PARAMETER :: filename = "sdsf.h5" ! File name
CHARACTER(LEN=8), PARAMETER :: dsetname = "IntArray" ! Dataset name
INTEGER(HID_T) :: file_id ! File identifier
INTEGER(HID_T) :: dset_id ! Dataset identifier
INTEGER(HID_T) :: dataspace ! Dataspace identifier
INTEGER(HID_T) :: memspace ! memspace identifier
INTEGER(HSIZE_T), DIMENSION(3) :: dimsm = (/7,7,3/) ! Dataset dimensions
! in memory
INTEGER(HSIZE_T), DIMENSION(2) :: dimsf = (/5,6/) ! Dataset dimensions.
INTEGER(HSIZE_T), DIMENSION(2) :: count = (/3,4/)
! Size of the hyperslab in the file
INTEGER(HSIZE_T), DIMENSION(2) :: offset = (/1,2/)
!hyperslab offset in the file
INTEGER(HSIZE_T), DIMENSION(3) :: count_out = (/3,4,1/)
!Size of the hyperslab in memory
INTEGER(HSIZE_T), DIMENSION(3) :: offset_out = (/3,0,0/)
!hyperslab offset in memory
INTEGER, DIMENSION(5,6) :: data ! Data to write
INTEGER, DIMENSION(7,7,3) :: data_out ! Output buffer
INTEGER :: dsetrank = 2 ! Dataset rank ( in file )
INTEGER :: memrank = 3 ! Dataset rank ( in memory )
INTEGER :: i, j, k
INTEGER :: error ! Error flag
INTEGER(HSIZE_T), DIMENSION(3) :: data_dims
!
! Write data to the HDF5 file.
!
!
! Data initialization.
!
do i = 1, 5
do j = 1, 6
data(i,j) = (i-1) + (j-1);
end do
end do
!
! 0, 1, 2, 3, 4, 5
! 1, 2, 3, 4, 5, 6
! 2, 3, 4, 5, 6, 7
! 3, 4, 5, 6, 7, 8
! 4, 5, 6, 7, 8, 9
!
!
! Initialize FORTRAN interface.
!
CALL h5open_f(error)
!
! Create a new file using default properties.
!
CALL h5fcreate_f(filename, H5F_ACC_TRUNC_F, file_id, error)
!
! Create the data space for the dataset.
!
CALL h5screate_simple_f(dsetrank, dimsf, dataspace, error)
!
! Create the dataset with default properties.
!
CALL h5dcreate_f(file_id, dsetname, H5T_NATIVE_INTEGER, dataspace, &
dset_id, error)
!
! Write the dataset.
!
data_dims(1) = 5
data_dims(2) = 6
CALL h5dwrite_f(dset_id, H5T_NATIVE_INTEGER, data, data_dims, error)
!
! Close the dataspace for the dataset.
!
CALL h5sclose_f(dataspace, error)
!
! Close the dataset.
!
CALL h5dclose_f(dset_id, error)
!
! Close the file.
!
CALL h5fclose_f(file_id, error)
!
! This part of the code reads the hyperslab from the sds.h5 file just
! created, into a 2-dimensional plane of the 3-dimensional dataset.
!
!
! Initialize data_out array.
!
do k = 1, 3
do j = 1, 7
do i = 1, 7
data_out(i,j,k) = 0;
end do
end do
end do
!
! Open the file.
!
! CALL h5fopen_f (filename, H5F_ACC_RDONLY_F, file_id, error)
CALL h5fopen_f (filename, H5F_ACC_RDWR_F, file_id, error)
write(*,*) error
!
! Open the dataset.
!
CALL h5dopen_f(file_id, dsetname, dset_id, error)
!
! Get dataset's dataspace identifier.
!
CALL h5dget_space_f(dset_id, dataspace, error)
!
! Select hyperslab in the dataset.
!
CALL h5sselect_hyperslab_f(dataspace, H5S_SELECT_SET_F, &
offset, count, error)
!
! Create memory dataspace.
!
CALL h5screate_simple_f(memrank, dimsm, memspace, error)
!
! Select hyperslab in memory.
!
CALL h5sselect_hyperslab_f(memspace, H5S_SELECT_SET_F, &
offset_out, count_out, error)
!
! Read data from hyperslab in the file into the hyperslab in
! memory and display.
!
data_dims(1) = 7
data_dims(2) = 7
data_dims(3) = 3
CALL H5dread_f(dset_id, H5T_NATIVE_INTEGER, data_out, data_dims, error, &
memspace, dataspace)
!
! Display data_out array
!
do i = 1, 7
print *, (data_out(i,j,1), j = 1,7)
end do
! 0 0 0 0 0 0 0
! 0 0 0 0 0 0 0
! 0 0 0 0 0 0 0
! 3 4 5 6 0 0 0
! 4 5 6 7 0 0 0
! 5 6 7 8 0 0 0
! 0 0 0 0 0 0 0
!
!
! Close the dataspace for the dataset.
!
CALL h5sclose_f(dataspace, error)
!
! Close the memoryspace.
!
CALL h5sclose_f(memspace, error)
!
! Close the dataset.
!
CALL h5dclose_f(dset_id, error)
!
! Close the file.
!
CALL h5fclose_f(file_id, error)
!
! Close FORTRAN interface.
!
CALL h5close_f(error)
END PROGRAM SELECTEXAMPLE
|
