[R] gray level values

Arnau Mir Torres arnau at mnm.uib.es
Wed Mar 22 12:47:49 CET 2006


I have a matrix whit n1 rows and n2 columns called example.
If I do
image(example), R shows me an image with 480x480 pixels.

How can I obtain the gray level of the pixel of row i and column j?



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