What is the difference between an image and a Grid? One is derived and one
is imported? Aren't they both just 2D (or more) arrays of numbers? Color
values reference the object. You can analyze these numbers to extract and
classify the object, like on the X-files last night when the FBI agent used
"SKAG" to classify a surveillance video still and it turned out to be the
exact colors of the some guy's letter jacket.

I guess ESRI is doing away with this weird GRID vs image thing.  I never
understood the difference anyway.


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