/*
* Copyright 1998-2009 University Corporation for Atmospheric Research/Unidata
*
* Portions of this software were developed by the Unidata Program at the
* University Corporation for Atmospheric Research.
*
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* this software, and any derivative works thereof, and its supporting
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package ucar.nc2.iosp.hdf5;
import org.junit.experimental.categories.Category;
import ucar.ma2.*;
import ucar.nc2.*;
import ucar.unidata.util.test.category.NeedsCdmUnitTest;
import java.io.*;
/** Test compressed data from H5 read JUnit framework. */
@Category(NeedsCdmUnitTest.class)
public class TestH5compressed {
@org.junit.Test
public void testReadCompressedInt() throws IOException {
// actually doesnt seem to be compressed ??
try (NetcdfFile ncfile = TestH5.openH5("support/zip.h5")) {
Variable dset = ncfile.findVariable("Data/Compressed_Data");
assert dset != null;
assert (dset.getDataType() == DataType.INT);
assert (dset.getRank() == 2);
assert (dset.getShape()[0] == 1000);
assert (dset.getShape()[1] == 20);
// read entire array
Array A = dset.read();
assert (A.getRank() == 2);
assert (A.getShape()[0] == 1000);
assert (A.getShape()[1] == 20);
int[] shape = A.getShape();
Index ima = A.getIndex();
for (int i = 0; i < shape[0]; i++)
for (int j = 0; j < shape[1]; j++)
assert (A.getInt(ima.set(i, j)) == i + j) : i + " " + j + " " + A.getInt(ima);
}
}
@org.junit.Test
public void testReadCompressedByte() throws IOException {
// actually doesnt seem to be compressed ??
try (NetcdfFile ncfile = TestH5.openH5("msg/MSG1_8bit_HRV.H5")) {
Variable dset = ncfile.findVariable("image1/image_preview");
assert dset != null;
assert (dset.getDataType() == DataType.BYTE);
assert (dset.getRank() == 2);
assert (dset.getShape()[0] == 64);
assert (dset.getShape()[1] == 96);
// read entire array
Array A = dset.read();
assert (A.getRank() == 2);
assert (A.getShape()[0] == 64);
assert (A.getShape()[1] == 96);
byte[] firstRow = new byte[]{
0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31,
31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31,
31, 31, 31, 31, 31, 31, 31, 31, 31, 32, 32, 33, 34, 35, 36, 37, 39, 39,
40, 42, 42, 44, 44, 57, 59, 52, 52, 53, 55, 59, 62, 63, 66, 71, 79, 81,
83, 85, 87, 89, 90, 87, 84, 84, 87, 94, 82, 80, 76, 77, 68, 59, 57, 61,
68, 81, 42};
byte[] lastRow = new byte[]{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 17, 31, 31,
31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31,
31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31,
31, 31, 30, 31, 28, 20, 11, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
int[] shape = A.getShape();
Index ima = A.getIndex();
int lrow = shape[0] - 1;
for (int j = 0; j < shape[1]; j++) {
assert (A.getByte(ima.set(0, j)) == firstRow[j]) : A.getByte(ima) + " should be " + firstRow[j];
assert (A.getByte(ima.set(lrow, j)) == lastRow[j]) : A.getByte(ima) + " should be " + lastRow[j];
}
}
}
@org.junit.Test
public void testEndian() throws IOException {
try (NetcdfFile ncfile = NetcdfFile.open(TestN4reading.testDir + "endianTest.nc4")) {
Variable v = ncfile.findVariable("TMP");
assert v != null;
assert v.getDataType() == DataType.FLOAT;
Array data = v.read();
assert data.getElementType() == float.class;
//large values indicate incorrect inflate or byte swapping
while (data.hasNext()) {
float val = data.nextFloat();
assert Math.abs(val) < 100.0 : val;
}
}
}
}