Supervised classification SNAP or OTB with QGIS

[annakisara]

hello everybody
i want to realize a supervised classification of sentinel 2a with snap, or OTB with QGIS
i tried the semi automatic classification but the result wasn’t well.

Now i look for steps to do this , if someone already do the some work !
thanks

[ABraun]

please have a look at the instructions here:

Supervised and unsupervised classification, Sentinel 2

Hello everyone, I'm a student of geodesy and geomatics and I'm supposed to do thesis on classification (supervised and unsupervised) of area near Novi Sad, Serbia. Since I'm new to s2tbx I'm having some problems. I already tried to do the unsupervised classification but the process didn't finish even though it worked all night. I already tried to find some tutorials and user-guides that could help me, but I didn't find anything usefull. So I was wondering if there is anyone who could help me …