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
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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://support.hdfgroup.org/ftp/HDF5/releases. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* This example illustrates how to create a dataset in a group.
* It is used in the HDF5 Tutorial.
*/
#include <iostream>
#include <string>
#include "H5Cpp.h"
#ifndef H5_NO_NAMESPACE
using namespace H5;
#ifndef H5_NO_STD
using std::cout;
using std::endl;
#endif // H5_NO_STD
#endif
const H5std_string FILE_NAME("h5tutr_groups.h5");
const H5std_string DATASET_NAME1("/MyGroup/dset1");
const H5std_string DATASET_NAME2("dset2");
const int RANK = 2;
const int D1DIM1 = 3;
const int D1DIM2 = 3;
const int D2DIM1 = 2;
const int D2DIM2 = 10;
int main(void)
{
int dset1_data[D1DIM1][D1DIM2], dset2_data[D2DIM1][D2DIM2]; // data buffers
int i, j;
// Try block to catch exceptions raised by any of the calls inside it
try
{
// Turn off the auto-printing when failure occurs so that we can
// handle the errors appropriately
Exception::dontPrint();
// Initialize the first dataset.
for (i = 0; i < D1DIM1; i++)
for (j = 0; j < D1DIM2; j++)
dset1_data[i][j] = j + 1;
// Initialize the second dataset.
for (i = 0; i < D2DIM1; i++)
for (j = 0; j < D2DIM2; j++)
dset2_data[i][j] = j + 1;
// Open an existing file and dataset.
H5File file(FILE_NAME, H5F_ACC_RDWR);
// Create the data space for the first dataset. Note the use of
// pointer for the instance 'dataspace'. It can be deleted and
// used again later for another data space. An HDF5 identifier is
// closed by the destructor or the method 'close()'.
hsize_t dims[RANK]; // dataset dimensions
dims[0] = D1DIM1;
dims[1] = D1DIM2;
DataSpace *dataspace = new DataSpace (RANK, dims);
// Create the dataset in group "MyGroup". Same note as for the
// dataspace above.
DataSet *dataset = new DataSet (file.createDataSet(DATASET_NAME1,
PredType::STD_I32BE, *dataspace));
// Write the data to the dataset using default memory space, file
// space, and transfer properties.
dataset->write(dset1_data, PredType::NATIVE_INT);
// Close the current dataset and data space.
delete dataset;
delete dataspace;
// Create the data space for the second dataset.
dims[0] = D2DIM1;
dims[1] = D2DIM2;
dataspace = new DataSpace (RANK, dims);
// Create group "Group_A" in group "MyGroup".
Group group(file.openGroup("/MyGroup/Group_A"));
// Create the second dataset in group "Group_A".
dataset = new DataSet (group.createDataSet(DATASET_NAME2,
PredType::STD_I32BE, *dataspace));
// Write the data to the dataset using default memory space, file
// space, and transfer properties.
dataset->write(dset2_data, PredType::NATIVE_INT);
// Close all objects.
delete dataspace;
delete dataset;
group.close();
} // end of try block
// catch failure caused by the H5File operations
catch(FileIException error)
{
error.printError();
return -1;
}
// catch failure caused by the DataSet operations
catch(DataSetIException error)
{
error.printError();
return -1;
}
// catch failure caused by the DataSpace operations
catch(DataSpaceIException error)
{
error.printError();
return -1;
}
// catch failure caused by the Group operations
catch(GroupIException error)
{
error.printError();
return -1;
}
return 0;
}
|
