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
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
! 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. *
! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
!
! This example extends an HDF5 dataset. It is used in the HDF5 Tutorial.
PROGRAM H5_EXTEND
USE HDF5 ! This module contains all necessary modules
IMPLICIT NONE
!
!the dataset is stored in file "extend.h5"
!
CHARACTER(LEN=9), PARAMETER :: filename = "extend.h5"
!
!dataset rank is 2 and name is "ExtendibleArray"
!
CHARACTER(LEN=15), PARAMETER :: dsetname = "ExtendibleArray"
INTEGER :: RANK = 2
INTEGER(HID_T) :: file_id ! File identifier
INTEGER(HID_T) :: dset_id ! Dataset identifier
INTEGER(HID_T) :: dataspace ! Dataspace identifier
INTEGER(HID_T) :: memspace ! Memory dataspace identifier
INTEGER(HID_T) :: crp_list ! Dataset creation property identifier
!
!dataset dimensions at creation time
!
INTEGER(HSIZE_T), DIMENSION(1:2) :: dims = (/3,3/)
!
!data dimensions
!
INTEGER(HSIZE_T), DIMENSION(1:2) :: dimsc = (/2,5/)
INTEGER(HSIZE_T), DIMENSION(1:2) :: dimsm = (/3,7/)
!
!Maximum dimensions
!
INTEGER(HSIZE_T), DIMENSION(1:2) :: maxdims
INTEGER(HSIZE_T), DIMENSION(1:2) :: offset
INTEGER(HSIZE_T), DIMENSION(1:2) :: count
!
! Variables for reading and writing
!
INTEGER, DIMENSION(1:3,1:3) :: data1
INTEGER, DIMENSION(1:21) :: data2 = &
(/2, 3, 4, 2, 3, 4, 2, 3, 4, 2, 3, 4, 2, 3, 4, 2, 3, 4, 2, 3, 4/)
INTEGER(HSIZE_T), DIMENSION(1:2) :: data_dims
!
!Size of data in the file
!
INTEGER(HSIZE_T), DIMENSION(1:2) :: size
!
!general purpose integer
!
INTEGER :: i, j
!
!flag to check operation success
!
INTEGER :: error
!
!Variables used in reading data back
!
INTEGER(HSIZE_T), DIMENSION(1:2) :: dimsr, maxdimsr
INTEGER :: rankr
INTEGER, DIMENSION(1:3,1:10) :: rdata
!
!Initialize FORTRAN predifined datatypes
!
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 with unlimited dimensions.
!
maxdims = (/H5S_UNLIMITED_F, H5S_UNLIMITED_F/)
CALL h5screate_simple_f(RANK, dims, dataspace, error, maxdims)
!
!Modify dataset creation properties, i.e. enable chunking
!
CALL h5pcreate_f(H5P_DATASET_CREATE_F, crp_list, error)
CALL h5pset_chunk_f(crp_list, RANK, dimsc, error)
!
!Create a dataset with 3X3 dimensions using cparms creation propertie .
!
CALL h5dcreate_f(file_id, dsetname, H5T_NATIVE_INTEGER, dataspace, &
dset_id, error, crp_list )
CALL h5sclose_f(dataspace, error)
!
!Fill data array with 1's
!
DO i = 1, dims(1)
DO j = 1, dims(2)
data1(i,j) = 1
END DO
END DO
!
!Write data array to dataset
!
data_dims(1:2) = (/3,3/)
CALL h5dwrite_f(dset_id, H5T_NATIVE_INTEGER, data1, data_dims, error)
!
!Extend the dataset. Dataset becomes 10 x 3.
!
size(1:2) = (/3,10/)
CALL h5dset_extent_f(dset_id, size, error)
offset(1:2) = (/0,3/)
count(1:2) = (/3,7/)
CALL h5screate_simple_f (2, dimsm, memspace, error)
!
!Write to 3x7 extended part of dataset
!
CALL h5dget_space_f(dset_id, dataspace, error)
CALL h5sselect_hyperslab_f(dataspace, H5S_SELECT_SET_F, &
offset, count, error)
data_dims(1:2) = (/3,7/)
CALL H5dwrite_f(dset_id, H5T_NATIVE_INTEGER, data2, data_dims, error, &
memspace, dataspace)
!
!Close the objects that were opened.
!
CALL h5sclose_f(dataspace, error)
CALL h5pclose_f(crp_list, error)
CALL h5dclose_f(dset_id, error)
CALL h5fclose_f(file_id, error)
!
!read the data back
!
!Open the file.
!
CALL h5fopen_f (filename, H5F_ACC_RDONLY_F, file_id, error)
!
!Open the dataset.
!
CALL h5dopen_f(file_id, dsetname, dset_id, error)
!
!Get dataset's dataspace handle.
!
CALL h5dget_space_f(dset_id, dataspace, error)
!
!Get dataspace's rank.
!
CALL h5sget_simple_extent_ndims_f(dataspace, rankr, error)
!
!Get dataspace's dimensions.
!
CALL h5sget_simple_extent_dims_f(dataspace, dimsr, maxdimsr, error)
!
!Get creation property list.
!
CALL h5dget_create_plist_f(dset_id, crp_list, error)
!
! Fill read buffer with zeroes
!
rdata(1:dimsr(1),1:dimsr(2)) = 0
!
!create memory dataspace
!
CALL h5screate_simple_f(rankr, dimsr, memspace, error)
!
!Read data
!
data_dims(1:2) = (/3,10/)
CALL H5dread_f(dset_id, H5T_NATIVE_INTEGER, rdata, data_dims, &
error, memspace, dataspace)
WRITE(*,'(A)') "Dataset:"
DO i = 1, dimsr(1)
WRITE(*,'(100(I0,1X))') rdata(i,1:dimsr(2))
END DO
!
!Close the objects that were opened.
!
CALL h5sclose_f(dataspace, error)
CALL h5sclose_f(memspace, error)
CALL h5pclose_f(crp_list, error)
CALL h5dclose_f(dset_id, error)
CALL h5fclose_f(file_id, error)
!Close FORTRAN predefined datatypes
!
CALL h5close_f(error)
END PROGRAM H5_EXTEND
|
