public void setYs(List<IDataset> ys) {
this.min = Double.MAX_VALUE;
this.max = -Double.MAX_VALUE;
for (IDataset y : ys) {
this.min = Math.min(min, y.min().doubleValue());
this.max = Math.max(max, y.max().doubleValue());
}
}
@Test
public void testMerlinDataLoader() throws Exception {
final String path = testFileFolder + "default1.mib";
IDataHolder dataHolder = LoaderFactory.getData(path, null);
IDataset data = dataHolder.getDataset(0);
int[] shape = data.getShape();
assertEquals(512, shape[0], 0.0);
assertEquals(512, shape[1], 0.0);
assertEquals(4095, data.max().intValue(), 0.0);
}
public static void handleException(
final ScanFileHolderException e,
final IDataHolder dh,
final String fileName,
final double maxVal,
final boolean unsigned,
final int numBits)
throws ScanFileHolderException, UnsupportedOperationException, IllegalArgumentException {
/*
* Need massive error handling here, since we get same type of
* exception with different messages.
* The exception throwing might change as time passes, the
* current handling is determined on 2014-03-04.
* "Unable" means we can not recover, the image could not be
* created. Currently this can not happen, instead we get an
* exception with "Error" in its message. See below.
* "ScaledSaver" means not allowed parameters, that is use either 32 bits or float,
* or <=16 bits with big enough max and not unsigned if there is any negative value.
* "No writer" means the writer could not write the image (for
* example bmp writer can save only RGBDataset), in this case
* converting the dataset might help.
* "Error" means other kind of problem, probably not recoverable.
*/
do {
if (StringUtils.matchStringWithPattern(e.getMessage(), ".*Unable.*", true)) break;
final StringBuffer sb = new StringBuffer();
if (StringUtils.matchStringWithPattern(e.getMessage(), ".*No writer.*", true)) {
sb.append(e.getLocalizedMessage());
sb.append("\n\nSuggestion: ");
sb.append(
"To save the image as "
+ FileUtils.getFileExtension(fileName)
+ " type, you can try to ");
if (dh.getDataset(0) instanceof RGBDataset)
sb.append("convert the RGB dataset to integer dataset.");
else sb.append("convert the dataset to RGB dataset.");
throw new IllegalArgumentException(sb.toString(), e.getCause());
}
if (StringUtils.matchStringWithPattern(e.getMessage(), ".*ScaledSaver.*", true)) {
if (numBits > 16) // Currently impossible case
break;
sb.append(e.getLocalizedMessage());
sb.append("\n\nSuggestion: ");
sb.append(
"To save the image as "
+ FileUtils.getFileExtension(fileName)
+ " type, you can try to any of these possibilites:\n");
sb.append("- Choose 32 bits or float type.\n");
double maxTotalValue = maxVal;
boolean addedSignedHint = !unsigned;
for (int i = 0; i < dh.size() && !addedSignedHint && maxVal > 0; i++) {
final IDataset data = dh.getDataset(i);
if (maxVal > 0) maxTotalValue = Math.max(data.max().doubleValue(), maxTotalValue);
if (!addedSignedHint && (unsigned && data.min().doubleValue() < 0)) {
sb.append("- Choose signed values.\n");
addedSignedHint = true;
}
}
if (maxTotalValue > maxVal)
sb.append("- Choose max value >= max value of image (" + maxTotalValue + ").\n");
sb.append("- Choose autoscale option.");
throw new IllegalArgumentException(sb.toString(), e.getCause());
}
if (StringUtils.matchStringWithPattern(e.getMessage(), ".*Error.*", true)) break;
throw new UnsupportedOperationException(
"Unexpected error: " + e.getLocalizedMessage(), e.getCause());
} while (false);
throw e;
}