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Diffstat (limited to 'HDF5Examples/JAVA/H5J/HDF5GroupDatasetCreate.java')
| -rw-r--r-- | HDF5Examples/JAVA/H5J/HDF5GroupDatasetCreate.java | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/HDF5Examples/JAVA/H5J/HDF5GroupDatasetCreate.java b/HDF5Examples/JAVA/H5J/HDF5GroupDatasetCreate.java new file mode 100644 index 0000000..b89cd9c --- /dev/null +++ b/HDF5Examples/JAVA/H5J/HDF5GroupDatasetCreate.java @@ -0,0 +1,204 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * 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. * + * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ + +/************************************************************ + Create two datasets within groups. + ************************************************************/ + +import hdf.hdf5lib.H5; +import hdf.hdf5lib.HDF5Constants; + +public class HDF5GroupDatasetCreate { + private static String FILENAME = "HDF5GroupDatasetCreate.h5"; + private static String GROUPNAME = "MyGroup"; + private static String GROUPNAME_A = "GroupA"; + private static String DATASETNAME1 = "dset1"; + private static String DATASETNAME2 = "dset2"; + private static final int DIM1_X = 3; + private static final int DIM1_Y = 3; + private static final int DIM2_X = 2; + private static final int DIM2_Y = 10; + + private static void h5_crtgrpd() + { + long file_id = HDF5Constants.H5I_INVALID_HID; + long dataspace_id = HDF5Constants.H5I_INVALID_HID; + long dataset_id = HDF5Constants.H5I_INVALID_HID; + long group_id = HDF5Constants.H5I_INVALID_HID; + long group1_id = HDF5Constants.H5I_INVALID_HID; + long group2_id = HDF5Constants.H5I_INVALID_HID; + int[][] dset1_data = new int[DIM1_X][DIM1_Y]; + int[][] dset2_data = new int[DIM2_X][DIM2_Y]; + long[] dims1 = {DIM1_X, DIM1_Y}; + long[] dims2 = {DIM2_X, DIM2_Y}; + + // Initialize the first dataset. + for (int indx = 0; indx < DIM1_X; indx++) + for (int jndx = 0; jndx < DIM1_Y; jndx++) + dset1_data[indx][jndx] = jndx + 1; + + // Initialize the second dataset. + for (int indx = 0; indx < DIM2_X; indx++) + for (int jndx = 0; jndx < DIM2_Y; jndx++) + dset2_data[indx][jndx] = jndx + 1; + + // Create a file. + try { + file_id = H5.H5Fcreate(FILENAME, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT, + HDF5Constants.H5P_DEFAULT); + // Create a group named "/MyGroup" in the file. + if (file_id >= 0) { + group1_id = H5.H5Gcreate(file_id, "/" + GROUPNAME, HDF5Constants.H5P_DEFAULT, + HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT); + // Create group "Group_A" in group "MyGroup" using absolute name. + if (group1_id >= 0) { + group2_id = + H5.H5Gcreate(file_id, "/" + GROUPNAME + "/" + GROUPNAME_A, HDF5Constants.H5P_DEFAULT, + HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT); + if (group2_id >= 0) + H5.H5Gclose(group2_id); + } + if (group1_id >= 0) + H5.H5Gclose(group1_id); + } + } + catch (Exception e) { + e.printStackTrace(); + } + + // Create the data space for the first dataset. + try { + dataspace_id = H5.H5Screate_simple(2, dims1, null); + } + catch (Exception e) { + e.printStackTrace(); + } + + // Create the dataset in group "MyGroup". + try { + if ((file_id >= 0) && (dataspace_id >= 0)) + dataset_id = H5.H5Dcreate( + file_id, "/" + GROUPNAME + "/" + DATASETNAME1, HDF5Constants.H5T_STD_I32BE, dataspace_id, + HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT); + } + catch (Exception e) { + e.printStackTrace(); + } + + // Write the first dataset. + try { + if (dataset_id >= 0) + H5.H5Dwrite(dataset_id, HDF5Constants.H5T_NATIVE_INT, HDF5Constants.H5S_ALL, + HDF5Constants.H5S_ALL, HDF5Constants.H5P_DEFAULT, dset1_data); + } + catch (Exception e) { + e.printStackTrace(); + } + + // Close the data space for the first dataset. + try { + if (dataspace_id >= 0) + H5.H5Sclose(dataspace_id); + dataspace_id = HDF5Constants.H5I_INVALID_HID; + } + catch (Exception e) { + e.printStackTrace(); + } + + // Close the first dataset. + try { + if (dataset_id >= 0) + H5.H5Dclose(dataset_id); + dataset_id = HDF5Constants.H5I_INVALID_HID; + } + catch (Exception e) { + e.printStackTrace(); + } + + // Open an existing group of the specified file. + try { + if (file_id >= 0) + group_id = + H5.H5Gopen(file_id, "/" + GROUPNAME + "/" + GROUPNAME_A, HDF5Constants.H5P_DEFAULT); + } + catch (Exception e) { + e.printStackTrace(); + } + + // Create the data space for the second dataset. + try { + dataspace_id = H5.H5Screate_simple(2, dims2, null); + } + catch (Exception e) { + e.printStackTrace(); + } + + // Create the second dataset in group "Group_A". + try { + if ((group_id >= 0) && (dataspace_id >= 0)) + dataset_id = H5.H5Dcreate(group_id, DATASETNAME2, HDF5Constants.H5T_STD_I32BE, dataspace_id, + HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, + HDF5Constants.H5P_DEFAULT); + } + catch (Exception e) { + e.printStackTrace(); + } + + // Write the second dataset. + try { + if (dataset_id >= 0) + H5.H5Dwrite(dataset_id, HDF5Constants.H5T_NATIVE_INT, HDF5Constants.H5S_ALL, + HDF5Constants.H5S_ALL, HDF5Constants.H5P_DEFAULT, dset2_data); + } + catch (Exception e) { + e.printStackTrace(); + } + + // Close the data space for the second dataset. + try { + if (dataspace_id >= 0) + H5.H5Sclose(dataspace_id); + } + catch (Exception e) { + e.printStackTrace(); + } + + // Close the second dataset. + try { + if (dataset_id >= 0) + H5.H5Dclose(dataset_id); + } + catch (Exception e) { + e.printStackTrace(); + } + + // Close the group. + try { + if (group_id >= 0) + H5.H5Gclose(group_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) { HDF5GroupDatasetCreate.h5_crtgrpd(); } +} |