hdf5/hl/examples/ex_lite3.c

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * All rights reserved.                                                      *
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 * the files COPYING and Copyright.html.  COPYING can be found at the root   *
 * of the source code distribution tree; Copyright.html can be found at the  *
 * root level of an installed copy of the electronic HDF5 document set and   *
 * is linked from the top-level documents page.  It can also be found at     *
 * http://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have          *
 * access to either file, you may request a copy from help@hdfgroup.org.     *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#include "hdf5.h"
#include "hdf5_hl.h"
#include <stdlib.h>

#define ATTR_SIZE 5

int main( void )
{
 hid_t   file_id;
 hid_t   dset_id;
 hid_t   space_id;
 hsize_t dims[1] = { ATTR_SIZE };
 int     data[ATTR_SIZE] = {1,2,3,4,5};
 herr_t  status;
 int     i;

 /* create a file */
 file_id = H5Fcreate("ex_lite3.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);

 /* create a data space  */
 space_id = H5Screate_simple(1, dims, NULL);

 /* create a dataset named "dset" */
 dset_id = H5Dcreate2(file_id, "dset", H5T_NATIVE_INT, space_id, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);

 /* close */
 status = H5Dclose(dset_id);
 status = H5Sclose(space_id);

/*-------------------------------------------------------------------------
 * example of H5LTset_attribute_int
 *-------------------------------------------------------------------------
 */

 /* create and write the attribute "attr1" on the dataset "dset" */
 status = H5LTset_attribute_int(file_id, "dset", "attr1", data, ATTR_SIZE);

/*-------------------------------------------------------------------------
 * example of H5LTget_attribute_int
 *-------------------------------------------------------------------------
 */

 /* get the attribute "attr1" from the dataset "dset" */
 status = H5LTget_attribute_int(file_id, "dset", "attr1", data);

 for(i = 0; i < ATTR_SIZE; i++ )
  printf("  %d", data[i]);
 printf("\n");

 /* close file */
 status = H5Fclose(file_id);

 return 0;
}