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I have a question if anyone can answer, it'd be greatly appreciated! I have Erdas Imagine 10, Arcmap 10 and ENVI 5. I am interested in limiting classes to specific areas of the image during a supervised classification. For example, if I know that wetlands only occur in the south-west area of my image, is there a way to limit that class to only measure pixels in the south-west portion of my image? This way I am ensuring the wetlands class only appears where I know wetlands actually exist on the ground and the class can't appear anywhere else - only in the area of the image that I delineate, and so prevents class confusion in other parts of the map. I there a way to do this, is it possible with the software mentioned above?
