[5.5.3]: UnsupportedOperationException while reading a variable from BUFR, but no error in NCdumpW about netcdf-java HOT 2 CLOSED

Hello, I was able to run the code that you provided and I can see that rawValue.readScalarInt() throwing an UnsupportedOperationException is the expected behavior in this case. According to the docs:

readScalarInt throws UnsupportedOperationException - if not a scalar Variable or one-dimensional of length 1.

rawValue contains a one-dimensional array of length 2 [12, 12]. You can get an array with the data in rawValue by calling rawValue.read()

from netcdf-java.

Thanks for your help.

According to this tool
https://kunden.dwd.de/bufrviewer/
the BUFR file has 2 submessage, Wikipedia called them subsets.

I managed to read both submessages or subsets for some variables:

// For readScalarInt

Array arrayData = rawValue.read().reduce();
for (int i = 0; i <= arrayData.getRank(); i++) {
	log.debug("Value[{}]: {}", i, arrayData.getInt(i));
}

// For readScalarString

Array arrayData = rawValue.read().reduce();
DataType dataType = rawValue.getDataType();
if (dataType == DataType.STRING) {
	for (int i = 0; i < arrayData.getRank(); i++) {
		log.debug("Value[{}]: {}", i, arrayData.getObject(i));
	}
} else if (dataType == DataType.CHAR) {
	ArrayChar arrayDataChar = (ArrayChar) arrayData;
	for (int i = 0; i < arrayDataChar.getRank(); i++) {
		log.debug("Value[{}]: {}", i, arrayDataChar.getString(i));
	}
}

It's worth to note that some variables have more values than the others. E.g. I my BUFR files has 2 WMO_station_number but only 1 Solar_and_infrared_radiation_correction. So importing such a file will be not so easy.

It would be cool if I could open one BUFR file, iterate over the submessages and then read all variables of these submessage.

from netcdf-java.