I have a huge problem that I can't solve even after trying everything I can think of.
I am trying to do some analysis of the Lake Chad basin in QGIS (2.16.3). I downloaded Landsat 8 data from Earth Explorer, however I need 4 different satelite images to cover the whole basin. I did atmospheric correction and created a bandstack, the problem that now appears is that I have a "black border" around the single images.
I tried to fix this (as read in another post in here) by going to layer properties -> transparency -> additional no data value = 0 but it didn't work (I also tried raster -> analysis -> near red), so instead I took the single image, and did raster -> miscellaneous -> merge -> and checked "no data value". This worked to remove the black borders, but now when I try to merge the four single images into one, the black borders appear again.
Does anyone know how to fix this?
I've been trying to do this now for days, but I really don't know how to help myself at this point. I will add some images to clarify what I'm talking about.