Greetings I have a training area map and a few landsaty images, and everytime i try to generate a signature I get this error/warning: Signature 1 not positive definite
What might be causing this? can this be a problem of my dataset? (must it range in some interval of values or what is wrong with it)? How can I avoid this? And what does it mean Not positive definite? Thanks Kim Besson
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