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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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>
using std::cout;
using std::endl;
#include <string>
#include "H5Cpp.h"
using namespace H5;
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.printErrorStack();
return -1;
}
// catch failure caused by the DataSet operations
catch(DataSetIException error)
{
error.printErrorStack();
return -1;
}
// catch failure caused by the DataSpace operations
catch(DataSpaceIException error)
{
error.printErrorStack();
return -1;
}
// catch failure caused by the Group operations
catch(GroupIException error)
{
error.printErrorStack();
return -1;
}
return 0;
}
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