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/**
* @file create_groups.cpp
* @author Fangjun Kuang <csukuangfj dot at gmail dot com>
* @date December 2017
*
* @brief It demonstrates how to create HDF5 groups and subgroups.
*
* Basic steps:
* 1. Use hdf::open to create a HDF5 file
* 2. Use HDF5::hlexists to check if a group exists or not
* 3. Use HDF5::grcreate to create a group by specifying its name
* 4. Use hdf::close to close a HDF5 file after modifying it
*
*/
//! [tutorial]
#include <iostream>
#include <opencv2/core.hpp>
#include <opencv2/hdf.hpp>
using namespace cv;
int main()
{
//! [create_group]
//! [tutorial_create_file]
Ptr<hdf::HDF5> h5io = hdf::open("mytest.h5");
//! [tutorial_create_file]
//! [tutorial_create_group]
// "/" means the root group, which is always present
if (!h5io->hlexists("/Group1"))
h5io->grcreate("/Group1");
else
std::cout << "/Group1 has already been created, skip it.\n";
//! [tutorial_create_group]
//! [tutorial_create_subgroup]
// Note that Group1 has been created above, otherwise exception will occur
if (!h5io->hlexists("/Group1/SubGroup1"))
h5io->grcreate("/Group1/SubGroup1");
else
std::cout << "/Group1/SubGroup1 has already been created, skip it.\n";
//! [tutorial_create_subgroup]
//! [tutorial_close_file]
h5io->close();
//! [tutorial_close_file]
//! [create_group]
return 0;
}
//! [tutorial]
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