Hi<div><br></div><div>My group images ranges between 0-255, my training_areas are more than OK (I guess).</div><div>WHy am I getting "Signature 1 not positive definite"? What shall I do to avoid this error?</div>
<div>Thanks</div><div>Kim</div><div><br><div class="gmail_quote">2011/2/14 Kim Besson <span dir="ltr"><<a href="mailto:kimbesson1981@gmail.com">kimbesson1981@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div>Greetings</div>
<div> </div>
<div>I have a training area map and a few landsaty images, and everytime i try to generate a signature I get this error/warning: </div>
<div>Signature 1 not positive definite</div>
<div> </div>
<div>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)?</div>
<div>How can I avoid this?</div>
<div>And what does it mean Not positive definite?</div>
<div>Thanks</div>
<div>Kim Besson</div>
</blockquote></div><br></div>