Hey,
I am working on a project where I need to read NEXRAD (Next Generation
Radar) weather data that is stored in the NetCDF format. I am trying to
pull out the data for a variable called SpectrumWidth using Java, but I
noticed that it is stored in the byte data type. I've spent days searching
on how to convert this data into a float or a double, but I haven't been
able to find much.
Right now the values I am getting are either 0s or the range of about
129-140. However, my partner, who knows more about weather radar data, says
that the values for SpectrumWidth should be either floats or doubles in the
range of 0.0 to around 15.0. I am not sure if this is even possible to do,
but from my understanding, data is stored in the byte data type to save
space, so is there a way to convert this data back to either a float or
double in the range I am looking for?
This is the closest I have come to converting this byte data, but it's not
working how I need it to.
dataFile = NetcdfFile.open(file, null);
Variable spectrumWidth = dataFile.findVariable("SpectrumWidth");
//Store the contents of spectrumWidth in an Array
Array varArray = spectrumWidth.read();
//Convert the unsigned Array to signed
Array spec = MAMath.convertUnsigned(varArray);
I also noticed that SpectrumWidth has three dimensions, so would I
need to store this data in a multi-dimensional array? Sorry for the weird
question, but I hope it makes sense. Any help would be greatly appreciated.
Thanks!
-Mike
