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
|
!
!In the following example we create one file with a group in it,
!and another file with a dataset. Mounting is used to
!access the dataset from the second file as a member of a group
!in the first file.
!
PROGRAM MOUNTEXAMPLE
USE HDF5 ! This module contains all necessary modules
IMPLICIT NONE
!
! Filenames are "mount1.h5" and "mount2.h5"
!
CHARACTER(LEN=9), PARAMETER :: filename1 = "mount1.h5"
CHARACTER(LEN=9), PARAMETER :: filename2 = "mount2.h5"
!
!data space rank and dimensions
!
INTEGER, PARAMETER :: RANK = 2
INTEGER, PARAMETER :: NX = 4
INTEGER, PARAMETER :: NY = 5
!
! File identifiers
!
INTEGER(HID_T) :: file1_id, file2_id
!
! Group identifier
!
INTEGER(HID_T) :: gid
!
! Dataset identifier
!
INTEGER(HID_T) :: dset_id
!
! Data space identifier
!
INTEGER(HID_T) :: dataspace
!
! Data type identifier
!
INTEGER(HID_T) :: dtype_id
!
! The dimensions for the dataset.
!
INTEGER(HSIZE_T), DIMENSION(2) :: dims = (/NX,NY/)
!
! Flag to check operation success
!
INTEGER :: error
!
! General purpose integer
!
INTEGER :: i, j
!
! Data buffers
!
INTEGER, DIMENSION(NX,NY) :: data_in, data_out
!
! Initialize FORTRAN interface.
!
CALL h5init_fortran_f(error)
!
! Initialize data_in buffer
!
do i = 1, NX
do j = 1, NY
data_in(i,j) = (i-1) + (j-1)
end do
end do
!
! Create first file "mount1.h5" using default properties.
!
CALL h5fcreate_f(filename1, H5F_ACC_TRUNC_F, file1_id, error)
!
! Create group "/G" inside file "mount1.h5".
!
CALL h5gcreate_f(file1_id, "/G", gid, error)
!
! Close file and group identifiers.
!
CALL h5gclose_f(gid, error)
CALL h5fclose_f(file1_id, error)
!
! Create second file "mount2.h5" using default properties.
!
CALL h5fcreate_f(filename2, H5F_ACC_TRUNC_F, file2_id, error)
!
! Create data space for the dataset.
!
CALL h5screate_simple_f(RANK, dims, dataspace, error)
!
! Create dataset "/D" inside file "mount2.h5".
!
CALL h5dcreate_f(file2_id, "/D", H5T_NATIVE_INTEGER, dataspace, &
dset_id, error)
!
! Write data_in to the dataset
!
CALL h5dwrite_f(dset_id, H5T_NATIVE_INTEGER, data_in, error)
!
! Close file, dataset and dataspace identifiers.
!
CALL h5sclose_f(dataspace, error)
CALL h5dclose_f(dset_id, error)
CALL h5fclose_f(file2_id, error)
!
! Reopen both files.
!
CALL h5fopen_f (filename1, H5F_ACC_RDWR_F, file1_id, error)
CALL h5fopen_f (filename2, H5F_ACC_RDWR_F, file2_id, error)
!
! Mount the second file under the first file's "/G" group.
!
CALL h5fmount_f (file1_id, "/G", file2_id, error)
!
! Access dataset D in the first file under /G/D name.
!
CALL h5dopen_f(file1_id, "/G/D", dset_id, error)
!
! Get dataset's data type.
!
CALL h5dget_type_f(dset_id, dtype_id, error)
!
! Read the dataset.
!
CALL h5dread_f(dset_id, dtype_id, data_out, error)
!
! Print out the data.
!
do i = 1, NX
print *, (data_out(i,j), j = 1, NY)
end do
!
!Close dset_id and dtype_id.
!
CALL h5dclose_f(dset_id, error)
CALL h5tclose_f(dtype_id, error)
!
! Unmount the second file.
!
CALL h5funmount_f(file1_id, "/G", error);
!
! Close both files.
!
CALL h5fclose_f(file1_id, error)
CALL h5fclose_f(file2_id, error)
!
! Close FORTRAN interface.
!
CALL h5close_fortran_f(error)
END PROGRAM MOUNTEXAMPLE
|
