2ea165efd0
* Modify temporary rpath for testing in java example scripts.
* Update URL in source file Copyright headers for web copy of COPYING
file - files not in src or test.
111 lines
3.8 KiB
Java
111 lines
3.8 KiB
Java
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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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 COPYING file, which can be found at the root of the source code *
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* distribution tree, or in https://www.hdfgroup.org/licenses. *
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* If you do not have access to either file, you may request a copy from *
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* help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/************************************************************
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Writing and reading an existing dataset.
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************************************************************/
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package examples.intro;
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import hdf.hdf5lib.H5;
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import hdf.hdf5lib.HDF5Constants;
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public class H5_ReadWrite {
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private static String FILENAME = "H5_ReadWrite.h5";
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private static String DATASETNAME = "dset";
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private static final int DIM_X = 4;
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private static final int DIM_Y = 6;
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private static void ReadWriteDataset() {
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long file_id = -1;
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long dataspace_id = -1;
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long dataset_id = -1;
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long[] dims = { DIM_X, DIM_Y };
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int[][] dset_data = new int[DIM_X][DIM_Y];
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// Initialize the dataset.
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for (int indx = 0; indx < DIM_X; indx++)
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for (int jndx = 0; jndx < DIM_Y; jndx++)
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dset_data[indx][jndx] = indx * 6 + jndx + 1;
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// Create a new file using default properties.
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try {
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file_id = H5.H5Fcreate(FILENAME, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT,
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HDF5Constants.H5P_DEFAULT);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Create the data space for the dataset.
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try {
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dataspace_id = H5.H5Screate_simple(2, dims, null);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Create the dataset.
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try {
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if ((file_id >= 0) && (dataspace_id >= 0))
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dataset_id = H5.H5Dcreate(file_id, "/" + DATASETNAME, HDF5Constants.H5T_STD_I32BE, dataspace_id,
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HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Write the dataset.
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try {
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if (dataset_id >= 0)
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H5.H5Dwrite(dataset_id, HDF5Constants.H5T_NATIVE_INT, HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
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HDF5Constants.H5P_DEFAULT, dset_data);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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try {
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if (dataset_id >= 0)
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H5.H5Dread(dataset_id, HDF5Constants.H5T_NATIVE_INT, HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
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HDF5Constants.H5P_DEFAULT, dset_data);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Close the dataset.
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try {
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if (dataset_id >= 0)
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H5.H5Dclose(dataset_id);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Close the file.
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try {
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if (file_id >= 0)
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H5.H5Fclose(file_id);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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}
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public static void main(String[] args) {
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H5_ReadWrite.ReadWriteDataset();
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}
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}
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