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https://github.com/HDFGroup/hdf5.git
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64 lines
2.4 KiB
C
64 lines
2.4 KiB
C
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by The HDF Group. *
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* Copyright by the Board of Trustees of the University of Illinois. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the files COPYING and Copyright.html. COPYING can be found at the root *
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* of the source code distribution tree; Copyright.html can be found at the *
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* root level of an installed copy of the electronic HDF5 document set and *
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* is linked from the top-level documents page. It can also be found at *
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* http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
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* access to either file, you may request a copy from help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*
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* This example illustrates how to create an attribute attached to a
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* dataset. It is used in the HDF5 Tutorial.
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*/
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#include "hdf5.h"
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#define FILE "dset.h5"
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int main() {
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hid_t file_id, dataset_id, attribute_id, dataspace_id; /* identifiers */
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hsize_t dims;
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int attr_data[2];
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herr_t status;
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/* Initialize the attribute data. */
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attr_data[0] = 100;
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attr_data[1] = 200;
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/* Open an existing file. */
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file_id = H5Fopen(FILE, H5F_ACC_RDWR, H5P_DEFAULT);
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/* Open an existing dataset. */
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dataset_id = H5Dopen(file_id, "/dset", H5P_DEFAULT);
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/* Create the data space for the attribute. */
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dims = 2;
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dataspace_id = H5Screate_simple(1, &dims, NULL);
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/* Create a dataset attribute. */
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attribute_id = H5Acreate (dataset_id, "Units", H5T_STD_I32BE, dataspace_id,
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H5P_DEFAULT, H5P_DEFAULT);
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/* Write the attribute data. */
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status = H5Awrite(attribute_id, H5T_NATIVE_INT, attr_data);
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/* Close the attribute. */
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status = H5Aclose(attribute_id);
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/* Close the dataspace. */
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status = H5Sclose(dataspace_id);
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/* Close to the dataset. */
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status = H5Dclose(dataset_id);
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/* Close the file. */
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status = H5Fclose(file_id);
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}
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