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92 lines
3.4 KiB
C
92 lines
3.4 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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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 a dataset in a group.
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* It is used in the HDF5 Tutorial.
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*/
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#include "hdf5.h"
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#define FILE "groups.h5"
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int main() {
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hid_t file_id, group_id, dataset_id, dataspace_id; /* identifiers */
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hsize_t dims[2];
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herr_t status;
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int i, j, dset1_data[3][3], dset2_data[2][10];
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/* Initialize the first dataset. */
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for (i = 0; i < 3; i++)
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for (j = 0; j < 3; j++)
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dset1_data[i][j] = j + 1;
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/* Initialize the second dataset. */
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for (i = 0; i < 2; i++)
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for (j = 0; j < 10; j++)
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dset2_data[i][j] = j + 1;
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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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/* Create the data space for the first dataset. */
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dims[0] = 3;
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dims[1] = 3;
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dataspace_id = H5Screate_simple(2, dims, NULL);
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/* Create a dataset in group "MyGroup". */
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dataset_id = H5Dcreate2(file_id, "/MyGroup/dset1", H5T_STD_I32BE, dataspace_id,
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H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
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/* Write the first dataset. */
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status = H5Dwrite(dataset_id, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT,
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dset1_data);
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/* Close the data space for the first dataset. */
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status = H5Sclose(dataspace_id);
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/* Close the first dataset. */
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status = H5Dclose(dataset_id);
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/* Open an existing group of the specified file. */
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group_id = H5Gopen2(file_id, "/MyGroup/Group_A", H5P_DEFAULT);
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/* Create the data space for the second dataset. */
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dims[0] = 2;
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dims[1] = 10;
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dataspace_id = H5Screate_simple(2, dims, NULL);
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/* Create the second dataset in group "Group_A". */
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dataset_id = H5Dcreate2(group_id, "dset2", H5T_STD_I32BE, dataspace_id,
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H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
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/* Write the second dataset. */
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status = H5Dwrite(dataset_id, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT,
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dset2_data);
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/* Close the data space for the second dataset. */
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status = H5Sclose(dataspace_id);
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/* Close the second dataset */
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status = H5Dclose(dataset_id);
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/* Close the group. */
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status = H5Gclose(group_id);
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/* Close the file. */
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status = H5Fclose(file_id);
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}
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