[R] Tif image to 8bit colour matrix.

[Roger Gill]

Dear listers,

I have a collection of tif images that I would like to convert, in R, to a 
matrix containing the values of the 8bit colour. Ideally, I would like a matrix 
for each of the colour channels (red, blue and green). I have 'googled' and 
searched the help list but have yet to find a solution and hope that someone can 
point me in the right direction.

I currently use subscription software (Igor) for the conversion and would prefer 
to use R.

Best wishes,

Roger