I downloaded sentinel2 data from google earth engine.
I changed L1C data to L2A in snap(version 8.0.0) using sen2cor(version 2.8).
And I calculated NDVI in snap optical - thematic landprocessing- vegetation radiometric indice- NDVI processor.
non-grass’s vlaue is higher than ‘0’ . What more should i do?
There are more vegetation indices in SNAP that you could test and compare, and see what happens with your vegetation types on each. What else do you want to do?