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Diffstat (limited to 'java/examples/datasets/H5Ex_D_FillValue.java')
| -rw-r--r-- | java/examples/datasets/H5Ex_D_FillValue.java | 240 |
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diff --git a/java/examples/datasets/H5Ex_D_FillValue.java b/java/examples/datasets/H5Ex_D_FillValue.java deleted file mode 100644 index db4dff7..0000000 --- a/java/examples/datasets/H5Ex_D_FillValue.java +++ /dev/null @@ -1,240 +0,0 @@ -/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * - * Copyright by The HDF Group. * - * All rights reserved. * - * * - * This file is part of HDF5. The full HDF5 copyright notice, including * - * terms governing use, modification, and redistribution, is contained in * - * the COPYING file, which can be found at the root of the source code * - * distribution tree, or in https://www.hdfgroup.org/licenses. * - * If you do not have access to either file, you may request a copy from * - * help@hdfgroup.org. * - * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ - -/************************************************************ - This example shows how to set the fill value for a - dataset. The program first sets the fill value to - FILLVAL, creates a dataset with dimensions of DIM_XxDIM_Y, - reads from the uninitialized dataset, and outputs the - contents to the screen. Next, it writes integers to the - dataset, reads the data back, and outputs it to the - screen. Finally it extends the dataset, reads from it, - and outputs the result to the screen. - ************************************************************/ -package examples.datasets; - -import hdf.hdf5lib.H5; -import hdf.hdf5lib.HDF5Constants; - -public class H5Ex_D_FillValue { - private static String FILENAME = "H5Ex_D_FillValue.h5"; - private static String DATASETNAME = "ExtendibleArray"; - private static final int DIM_X = 4; - private static final int DIM_Y = 7; - private static final int EDIM_X = 6; - private static final int EDIM_Y = 10; - private static final int CHUNK_X = 4; - private static final int CHUNK_Y = 4; - private static final int RANK = 2; - private static final int NDIMS = 2; - private static final int FILLVAL = 99; - - private static void fillValue() - { - long file_id = HDF5Constants.H5I_INVALID_HID; - long dcpl_id = HDF5Constants.H5I_INVALID_HID; - long dataspace_id = HDF5Constants.H5I_INVALID_HID; - long dataset_id = HDF5Constants.H5I_INVALID_HID; - long[] dims = {DIM_X, DIM_Y}; - long[] extdims = {EDIM_X, EDIM_Y}; - long[] chunk_dims = {CHUNK_X, CHUNK_Y}; - long[] maxdims = {HDF5Constants.H5S_UNLIMITED, HDF5Constants.H5S_UNLIMITED}; - int[][] write_dset_data = new int[DIM_X][DIM_Y]; - int[][] read_dset_data = new int[DIM_X][DIM_Y]; - int[][] extend_dset_data = new int[EDIM_X][EDIM_Y]; - - // Initialize the dataset. - for (int indx = 0; indx < DIM_X; indx++) - for (int jndx = 0; jndx < DIM_Y; jndx++) - write_dset_data[indx][jndx] = indx * jndx - jndx; - - // Create a new file using default properties. - try { - file_id = H5.H5Fcreate(FILENAME, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT, - HDF5Constants.H5P_DEFAULT); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Create dataspace with unlimited dimensions. - try { - dataspace_id = H5.H5Screate_simple(RANK, dims, maxdims); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Create the dataset creation property list. - try { - dcpl_id = H5.H5Pcreate(HDF5Constants.H5P_DATASET_CREATE); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Set the chunk size. - try { - if (dcpl_id >= 0) - H5.H5Pset_chunk(dcpl_id, NDIMS, chunk_dims); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Set the fill value for the dataset - try { - int[] fill_value = {FILLVAL}; - if (dcpl_id >= 0) - H5.H5Pset_fill_value(dcpl_id, HDF5Constants.H5T_NATIVE_INT, fill_value); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Set the allocation time to "early". This way we can be sure - // that reading from the dataset immediately after creation will - // return the fill value. - try { - if (dcpl_id >= 0) - H5.H5Pset_alloc_time(dcpl_id, HDF5Constants.H5D_ALLOC_TIME_EARLY); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Create the dataset using the dataset creation property list. - try { - if ((file_id >= 0) && (dataspace_id >= 0) && (dcpl_id >= 0)) - dataset_id = H5.H5Dcreate(file_id, DATASETNAME, HDF5Constants.H5T_STD_I32LE, dataspace_id, - HDF5Constants.H5P_DEFAULT, dcpl_id, HDF5Constants.H5P_DEFAULT); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Read values from the dataset, which has not been written to yet. - try { - if (dataset_id >= 0) - H5.H5Dread(dataset_id, HDF5Constants.H5T_NATIVE_INT, HDF5Constants.H5S_ALL, - HDF5Constants.H5S_ALL, HDF5Constants.H5P_DEFAULT, read_dset_data); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Output the data to the screen. - System.out.println("Dataset before being written to:"); - for (int indx = 0; indx < DIM_X; indx++) { - System.out.print(" [ "); - for (int jndx = 0; jndx < DIM_Y; jndx++) - System.out.print(read_dset_data[indx][jndx] + " "); - System.out.println("]"); - } - System.out.println(); - - // Write the data to the dataset. - try { - if (dataset_id >= 0) - H5.H5Dwrite(dataset_id, HDF5Constants.H5T_NATIVE_INT, HDF5Constants.H5S_ALL, - HDF5Constants.H5S_ALL, HDF5Constants.H5P_DEFAULT, write_dset_data); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Read the data back. - try { - if (dataset_id >= 0) - H5.H5Dread(dataset_id, HDF5Constants.H5T_NATIVE_INT, HDF5Constants.H5S_ALL, - HDF5Constants.H5S_ALL, HDF5Constants.H5P_DEFAULT, read_dset_data); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Output the data to the screen. - System.out.println("Dataset after being written to:"); - for (int indx = 0; indx < DIM_X; indx++) { - System.out.print(" [ "); - for (int jndx = 0; jndx < DIM_Y; jndx++) - System.out.print(read_dset_data[indx][jndx] + " "); - System.out.println("]"); - } - System.out.println(); - - // Extend the dataset. - try { - if (dataset_id >= 0) - H5.H5Dset_extent(dataset_id, extdims); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Read from the extended dataset. - try { - if (dataset_id >= 0) - H5.H5Dread(dataset_id, HDF5Constants.H5T_NATIVE_INT, HDF5Constants.H5S_ALL, - HDF5Constants.H5S_ALL, HDF5Constants.H5P_DEFAULT, extend_dset_data); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Output the data to the screen. - System.out.println("Dataset after extension:"); - for (int indx = 0; indx < EDIM_X; indx++) { - System.out.print(" [ "); - for (int jndx = 0; jndx < EDIM_Y; jndx++) - System.out.print(extend_dset_data[indx][jndx] + " "); - System.out.println("]"); - } - System.out.println(); - - // End access to the dataset and release resources used by it. - try { - if (dataset_id >= 0) - H5.H5Dclose(dataset_id); - } - catch (Exception e) { - e.printStackTrace(); - } - - try { - if (dataspace_id >= 0) - H5.H5Sclose(dataspace_id); - } - catch (Exception e) { - e.printStackTrace(); - } - - try { - if (dcpl_id >= 0) - H5.H5Pclose(dcpl_id); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Close the file. - try { - if (file_id >= 0) - H5.H5Fclose(file_id); - } - catch (Exception e) { - e.printStackTrace(); - } - } - - public static void main(String[] args) { H5Ex_D_FillValue.fillValue(); } -} |