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50
100
150
200
250
Because DocUint8 subclasses uint8, you can use any uint8 methods. For example,
size(img1)
ans =
280 272
returns the size of the image data.
Indexing Operations
Inherited methods perform indexing operations, but return objects of the same class as
the subclass.
Therefore, you can index into the image data and call a subclass method:
12 How to Build on Other Classes