diff options
Diffstat (limited to 'java/examples/datasets/H5Ex_D_Chunk.java')
-rw-r--r-- | java/examples/datasets/H5Ex_D_Chunk.java | 101 |
1 files changed, 53 insertions, 48 deletions
diff --git a/java/examples/datasets/H5Ex_D_Chunk.java b/java/examples/datasets/H5Ex_D_Chunk.java index 2ddf293..fbfc148 100644 --- a/java/examples/datasets/H5Ex_D_Chunk.java +++ b/java/examples/datasets/H5Ex_D_Chunk.java @@ -30,47 +30,48 @@ import hdf.hdf5lib.H5; import hdf.hdf5lib.HDF5Constants; public class H5Ex_D_Chunk { - private static String FILENAME = "H5Ex_D_Chunk.h5"; + private static String FILENAME = "H5Ex_D_Chunk.h5"; private static String DATASETNAME = "DS1"; - private static final int DIM_X = 6; - private static final int DIM_Y = 8; - 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 DIM_X = 6; + private static final int DIM_Y = 8; + 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; // Values for the status of space allocation enum H5D_layout { - H5D_LAYOUT_ERROR(-1), H5D_COMPACT(0), H5D_CONTIGUOUS(1), H5D_CHUNKED(2), H5D_VIRTUAL(3), H5D_NLAYOUTS(4); + H5D_LAYOUT_ERROR(-1), + H5D_COMPACT(0), + H5D_CONTIGUOUS(1), + H5D_CHUNKED(2), + H5D_VIRTUAL(3), + H5D_NLAYOUTS(4); private static final Map<Integer, H5D_layout> lookup = new HashMap<Integer, H5D_layout>(); - static { + static + { for (H5D_layout s : EnumSet.allOf(H5D_layout.class)) lookup.put(s.getCode(), s); } private int code; - H5D_layout(int layout_type) { - this.code = layout_type; - } + H5D_layout(int layout_type) { this.code = layout_type; } - public int getCode() { - return this.code; - } + public int getCode() { return this.code; } - public static H5D_layout get(int code) { - return lookup.get(code); - } + public static H5D_layout get(int code) { return lookup.get(code); } } - private static void writeChunk() { - long file_id = HDF5Constants.H5I_INVALID_HID; + private static void writeChunk() + { + long file_id = HDF5Constants.H5I_INVALID_HID; long filespace_id = HDF5Constants.H5I_INVALID_HID; - long dataset_id = HDF5Constants.H5I_INVALID_HID; - long dcpl_id = HDF5Constants.H5I_INVALID_HID; - long[] dims = { DIM_X, DIM_Y }; - long[] chunk_dims = { CHUNK_X, CHUNK_Y }; + long dataset_id = HDF5Constants.H5I_INVALID_HID; + long dcpl_id = HDF5Constants.H5I_INVALID_HID; + long[] dims = {DIM_X, DIM_Y}; + long[] chunk_dims = {CHUNK_X, CHUNK_Y}; int[][] dset_data = new int[DIM_X][DIM_Y]; // Initialize data to "1", to make it easier to see the selections. @@ -91,7 +92,7 @@ public class H5Ex_D_Chunk { // Create a new file using default properties. try { file_id = H5.H5Fcreate(FILENAME, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT, - HDF5Constants.H5P_DEFAULT); + HDF5Constants.H5P_DEFAULT); } catch (Exception e) { e.printStackTrace(); @@ -127,20 +128,21 @@ public class H5Ex_D_Chunk { try { if ((file_id >= 0) && (filespace_id >= 0) && (dcpl_id >= 0)) dataset_id = H5.H5Dcreate(file_id, DATASETNAME, HDF5Constants.H5T_STD_I32LE, filespace_id, - HDF5Constants.H5P_DEFAULT, dcpl_id, HDF5Constants.H5P_DEFAULT); + HDF5Constants.H5P_DEFAULT, dcpl_id, HDF5Constants.H5P_DEFAULT); } catch (Exception e) { e.printStackTrace(); } // Define and select the first part of the hyperslab selection. - long[] start = { 0, 0 }; - long[] stride = { 3, 3 }; - long[] count = { 2, 3 }; - long[] block = { 2, 2 }; + long[] start = {0, 0}; + long[] stride = {3, 3}; + long[] count = {2, 3}; + long[] block = {2, 2}; try { if ((filespace_id >= 0)) - H5.H5Sselect_hyperslab(filespace_id, HDF5Constants.H5S_SELECT_SET, start, stride, count, block); + H5.H5Sselect_hyperslab(filespace_id, HDF5Constants.H5S_SELECT_SET, start, stride, count, + block); } catch (Exception e) { e.printStackTrace(); @@ -152,12 +154,13 @@ public class H5Ex_D_Chunk { block[1] = 1; try { if ((filespace_id >= 0)) { - H5.H5Sselect_hyperslab(filespace_id, HDF5Constants.H5S_SELECT_NOTB, start, stride, count, block); + H5.H5Sselect_hyperslab(filespace_id, HDF5Constants.H5S_SELECT_NOTB, start, stride, count, + block); // Write the data to the dataset. if (dataset_id >= 0) H5.H5Dwrite(dataset_id, HDF5Constants.H5T_NATIVE_INT, HDF5Constants.H5S_ALL, filespace_id, - HDF5Constants.H5P_DEFAULT, dset_data); + HDF5Constants.H5P_DEFAULT, dset_data); } } catch (Exception e) { @@ -199,11 +202,12 @@ public class H5Ex_D_Chunk { } } - private static void readChunk() { - long file_id = HDF5Constants.H5I_INVALID_HID; + private static void readChunk() + { + long file_id = HDF5Constants.H5I_INVALID_HID; long filespace_id = HDF5Constants.H5I_INVALID_HID; - long dataset_id = HDF5Constants.H5I_INVALID_HID; - long dcpl_id = HDF5Constants.H5I_INVALID_HID; + long dataset_id = HDF5Constants.H5I_INVALID_HID; + long dcpl_id = HDF5Constants.H5I_INVALID_HID; int[][] dset_data = new int[DIM_X][DIM_Y]; // Open an existing file. @@ -267,8 +271,8 @@ public class H5Ex_D_Chunk { // Read the data using the default properties. try { if (dataset_id >= 0) - H5.H5Dread(dataset_id, HDF5Constants.H5T_NATIVE_INT, HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL, - HDF5Constants.H5P_DEFAULT, dset_data); + H5.H5Dread(dataset_id, HDF5Constants.H5T_NATIVE_INT, HDF5Constants.H5S_ALL, + HDF5Constants.H5S_ALL, HDF5Constants.H5P_DEFAULT, dset_data); } catch (Exception e) { e.printStackTrace(); @@ -294,18 +298,19 @@ public class H5Ex_D_Chunk { if (dataset_id >= 0) { filespace_id = H5.H5Dget_space(dataset_id); - long[] start = { 0, 1 }; - long[] stride = { 4, 4 }; - long[] count = { 2, 2 }; - long[] block = { 2, 3 }; + long[] start = {0, 1}; + long[] stride = {4, 4}; + long[] count = {2, 2}; + long[] block = {2, 3}; if (filespace_id >= 0) { - H5.H5Sselect_hyperslab(filespace_id, HDF5Constants.H5S_SELECT_SET, start, stride, count, block); + H5.H5Sselect_hyperslab(filespace_id, HDF5Constants.H5S_SELECT_SET, start, stride, count, + block); // Read the data using the previously defined hyperslab. if ((dataset_id >= 0) && (filespace_id >= 0)) - H5.H5Dread(dataset_id, HDF5Constants.H5T_NATIVE_INT, HDF5Constants.H5S_ALL, filespace_id, - HDF5Constants.H5P_DEFAULT, dset_data); + H5.H5Dread(dataset_id, HDF5Constants.H5T_NATIVE_INT, HDF5Constants.H5S_ALL, + filespace_id, HDF5Constants.H5P_DEFAULT, dset_data); } } } @@ -358,9 +363,9 @@ public class H5Ex_D_Chunk { } } - public static void main(String[] args) { + public static void main(String[] args) + { H5Ex_D_Chunk.writeChunk(); H5Ex_D_Chunk.readChunk(); } - } |