Hi, I'm working on a L1A aster images in order to obtaingeological data. I'm using aster mineral ratio (by mminari) but I have a lot oh vegetation in the image... the L1A images is good for this purpose is good (since Envi apply the 1A to 1B correction when opening the image) or not? do the result is heavily affected by the vegetation? how can I "filter" the vegetation effect? (as maximum as possible I mean..) thanks antonio