@Test public void load() throws Exception { PgmLoader pgmLoader = new PgmLoader(testFileFolder + file); DataHolder dataHolder = pgmLoader.loadFile(); assertEquals(pgmLoader.getHeaderValue("MagicNumber"), "P5"); assertEquals(pgmLoader.getHeaderValue("Width"), "1024"); assertEquals(pgmLoader.getHeaderValue("Height"), "1024"); assertEquals(pgmLoader.getHeaderValue("Maxval"), "65535"); Dataset data = dataHolder.getDataset("Portable Grey Map"); // Check the first data point assertEquals(data.getDouble(0, 0), 0.0, 0.0); // Check the middle data point assertEquals(data.getDouble(512, 511), 15104.0, 0.0); // Check the last data point assertEquals(data.getDouble(1023, 1023), 0.0, 0.0); }
@Test public void testSaveFile() throws ScanFileHolderException { Dataset a = DatasetFactory.createRange(128 * 128, Dataset.FLOAT32).reshape(128, 128); DataHolder d = new DataHolder(); a.idivide(10000); d.addDataset("a", a); String oname = testScratchDirectoryName + "a.tif"; TIFFImageSaver s; DataHolder in; s = new TIFFImageSaver(oname, true); s.saveFile(d); in = new TIFFImageLoader(oname).loadFile(); checkDataset(a, in.getDataset(0)); s = new TIFFImageSaver(oname); s.saveFile(d); in = new TIFFImageLoader(oname).loadFile(); checkDataset(a.cast(Dataset.INT32), in.getDataset(0)); }