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Determining the number of different pixel values

Question asked by nmaloof94 on Sep 1, 2017
Latest reply on Sep 1, 2017 by nmaloof94

Hi there.


I'm quickly gaining confidence and knowledge in the world of ArcGIS, but I still have much to learn. 


I am trying to perform an unsupervised classification on an orthorectified multispectral image. I'm aware that, in order to determine the number of classes I want, I need to know the number of different pixel values in the image. So, how can I effectively determine the number of pixel values in my image?