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