WHY I GET NAN FROM "IMPIXCEL"

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mandana
mandana 2018-2-9
评论： mandana 2018-2-11
I want to read an image and get color of pixells but the result from "impixel" for some pixels is NAN why" please help me
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mandana
mandana 2018-2-9
pixels that are nan sounds like what? how can i recognize them?

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Walter Roberson
Walter Roberson 2018-2-9
If you specified row and column numbers to impixel() and they were outside of the image, then you would get NaN returned.
Watch out that impixel expects column (x coordinate) to be passed in before row (y coordinate)

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