Hi My group images ranges between 0-255, my training_areas are more than OK (I guess). WHy am I getting "Signature 1 not positive definite"? What shall I do to avoid this error? Thanks Kim
2011/2/14 Kim Besson <kimbesson1...@gmail.com> > 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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