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//
// Writing and reading an existing dataset.
package examples.intro;
import ncsa.hdf.object.Dataset;
import ncsa.hdf.object.Datatype;
import ncsa.hdf.object.FileFormat;
import ncsa.hdf.object.h5.H5Datatype;
import ncsa.hdf.object.h5.H5File;
public class H5Object_ReadWrite {
private static String FILENAME = "H5Object_ReadWrite.h5";
private static String DATASETNAME = "dset";
private static final int DIM_X = 4;
private static final int DIM_Y = 6;
private static final int DATATYPE_SIZE = 4;
private static void ReadWriteDataset() {
H5File file = null;
Dataset dset = null;
int[][] dset_data = new int[DIM_X][DIM_Y];
int[] dset_data_read = new int[DIM_X*DIM_Y];
long[] dims = { DIM_X, DIM_Y };
final H5Datatype typeInt = new H5Datatype(Datatype.CLASS_INTEGER,
DATATYPE_SIZE, Datatype.ORDER_BE, -1);
// Initialize the dataset.
for (int indx = 0; indx < DIM_X; indx++)
for (int jndx = 0; jndx < DIM_Y; jndx++)
dset_data[indx][jndx] = indx * 6 + jndx + 1;
// Create a new file using default properties.
try {
file = new H5File(FILENAME, FileFormat.CREATE);
file.open();
}
catch (Exception e) {
e.printStackTrace();
}
// Create the dataset.
try {
dset = file.createScalarDS("/" + DATASETNAME, null, typeInt,
dims, null, null, 0,
dset_data);
}
catch (Exception e) {
e.printStackTrace();
}
try {
dset.init();
dset_data_read = (int[]) dset.getData();
}
catch (Exception e) {
e.printStackTrace();
}
// Close the file.
try {
file.close();
}
catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
H5Object_ReadWrite.ReadWriteDataset();
}
}
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