I am currently trying to complete a supervised classification for a class on Coursera. I had previously given up on the assignment before, so here I am giving it another try.
I did the following...
Save training sample with ~10 samples for each of the following land types. I believe the pixel count is small enough that it shouldn't be giving the computer problems
Click create signature file. I tried saving in a nested folder, and that didn't work.
I also tried saving it to the desktop and many other folders, because help online said that they had success saving it to folders that do not have a long pathway. No luck with short pathways or long pathways.