In classification(RF) "java.lang.nullpointerexception" error

Optical Toolbox Sentinel 2 Problem Reports
#1

Hello everybody. I have a problem in SNAP program. Thank you already.

I taked the error “java.lang.nullpointerexception” while make a classification.

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and after image classification, image don’t appear.

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dg1352×636 29.8 KB

#2

can you please describe your input data (where it comes from, how many bands, their names…) as well as the training geometries?

#3

Data are Sentinel-2A images.
Bands: 1,2,3,4,5,6,7,8,8A,9,10,11,12

Process Made;
in SNAP, resample(10m) and subset
in ArcGIS, buffer(5km) and clip(study area)
in SNAP, Random Forest(It did not happen)
in RF classification; 5 classes created.

Is it enough Mr.Braun?

#4

So you processed the data in ArcGIS and then imported it back into SNAP? What format did you use?

Maybe, for a test, you can skip the buffer and clip (only create a rough subset in SNAP) stick to the BEAM DIMAP format, and see if the RF operator works better if you do all steps inside SNAP.