I can display my netCDF file using code from DisplayTest, case 10. However, I cannot figure out how to query the attributes of the file. In my test netCDF file I use variables (x, y) -> documents. Where x goes from 1-30 and y goes from 1-40. I will not always know this apriori. If I read this file as java DisplayTest 10 equinox.nc it displays as expected. My question is how can I query the range of the x and y variables. When I try double range1lat = map1lat.getRange(); where map1lat is new ScalarMap((RealType) dtype.getComponent(0),Display.XAxis)); NaN is returned. I tried various other combinations of methods and could not produce the simple result of 1,30 and 1,40 for (x,y). Any suggestions? Another question. I have a JTable. I would like the cursor on the surface to reflect the proper entry in the JTable. Which method returns the (x,y) position of the cursor on the 3-D surface? From this I can compute the appropriate entry in the JTable. Thanks in advance for any advice.