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
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/************************************************************
Create two datasets within groups.
************************************************************/
package examples.intro;
import hdf.hdf5lib.H5;
import hdf.hdf5lib.HDF5Constants;
public class H5_CreateGroupDataset {
private static String FILENAME = "H5_CreateGroupDataset.h5";
private static String GROUPNAME = "MyGroup";
private static String GROUPNAME_A = "GroupA";
private static String DATASETNAME1 = "dset1";
private static String DATASETNAME2 = "dset2";
private static final int DIM1_X = 3;
private static final int DIM1_Y = 3;
private static final int DIM2_X = 2;
private static final int DIM2_Y = 10;
private static void h5_crtgrpd() {
long file_id = -1;
long dataspace_id = -1;
long dataset_id = -1;
long group_id = -1;
long group1_id = -1;
long group2_id = -1;
int[][] dset1_data = new int[DIM1_X][DIM1_Y];
int[][] dset2_data = new int[DIM2_X][DIM2_Y];
long[] dims1 = { DIM1_X, DIM1_Y };
long[] dims2 = { DIM2_X, DIM2_Y };
// Initialize the first dataset.
for (int indx = 0; indx < DIM1_X; indx++)
for (int jndx = 0; jndx < DIM1_Y; jndx++)
dset1_data[indx][jndx] = jndx + 1;
// Initialize the second dataset.
for (int indx = 0; indx < DIM2_X; indx++)
for (int jndx = 0; jndx < DIM2_Y; jndx++)
dset2_data[indx][jndx] = jndx + 1;
// Create a file.
try {
file_id = H5.H5Fcreate(FILENAME, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT,
HDF5Constants.H5P_DEFAULT);
// Create a group named "/MyGroup" in the file.
if (file_id >= 0) {
group1_id = H5.H5Gcreate(file_id, "/" + GROUPNAME, HDF5Constants.H5P_DEFAULT,
HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
// Create group "Group_A" in group "MyGroup" using absolute name.
if (group1_id >= 0) {
group2_id = H5.H5Gcreate(file_id, "/" + GROUPNAME + "/" + GROUPNAME_A, HDF5Constants.H5P_DEFAULT,
HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
if (group2_id >= 0)
H5.H5Gclose(group2_id);
}
if (group1_id >= 0)
H5.H5Gclose(group1_id);
}
}
catch (Exception e) {
e.printStackTrace();
}
// Create the data space for the first dataset.
try {
dataspace_id = H5.H5Screate_simple(2, dims1, null);
}
catch (Exception e) {
e.printStackTrace();
}
// Create the dataset in group "MyGroup".
try {
if ((file_id >= 0) && (dataspace_id >= 0))
dataset_id = H5.H5Dcreate(file_id, "/" + GROUPNAME + "/" + DATASETNAME1, HDF5Constants.H5T_STD_I32BE,
dataspace_id, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
}
catch (Exception e) {
e.printStackTrace();
}
// Write the first dataset.
try {
if (dataset_id >= 0)
H5.H5Dwrite(dataset_id, HDF5Constants.H5T_NATIVE_INT, HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
HDF5Constants.H5P_DEFAULT, dset1_data);
}
catch (Exception e) {
e.printStackTrace();
}
// Close the data space for the first dataset.
try {
if (dataspace_id >= 0)
H5.H5Sclose(dataspace_id);
dataspace_id = -1;
}
catch (Exception e) {
e.printStackTrace();
}
// Close the first dataset.
try {
if (dataset_id >= 0)
H5.H5Dclose(dataset_id);
dataset_id = -1;
}
catch (Exception e) {
e.printStackTrace();
}
// Open an existing group of the specified file.
try {
if (file_id >= 0)
group_id = H5.H5Gopen(file_id, "/" + GROUPNAME + "/" + GROUPNAME_A, HDF5Constants.H5P_DEFAULT);
}
catch (Exception e) {
e.printStackTrace();
}
// Create the data space for the second dataset.
try {
dataspace_id = H5.H5Screate_simple(2, dims2, null);
}
catch (Exception e) {
e.printStackTrace();
}
// Create the second dataset in group "Group_A".
try {
if ((group_id >= 0) && (dataspace_id >= 0))
dataset_id = H5.H5Dcreate(group_id, DATASETNAME2, HDF5Constants.H5T_STD_I32BE, dataspace_id,
HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
}
catch (Exception e) {
e.printStackTrace();
}
// Write the second dataset.
try {
if (dataset_id >= 0)
H5.H5Dwrite(dataset_id, HDF5Constants.H5T_NATIVE_INT, HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
HDF5Constants.H5P_DEFAULT, dset2_data);
}
catch (Exception e) {
e.printStackTrace();
}
// Close the data space for the second dataset.
try {
if (dataspace_id >= 0)
H5.H5Sclose(dataspace_id);
}
catch (Exception e) {
e.printStackTrace();
}
// Close the second dataset.
try {
if (dataset_id >= 0)
H5.H5Dclose(dataset_id);
}
catch (Exception e) {
e.printStackTrace();
}
// Close the group.
try {
if (group_id >= 0)
H5.H5Gclose(group_id);
}
catch (Exception e) {
e.printStackTrace();
}
// Close the file.
try {
if (file_id >= 0)
H5.H5Fclose(file_id);
}
catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
H5_CreateGroupDataset.h5_crtgrpd();
}
}
|
