Becky Franklin wrote: > Thanks so much for the responses folks they've been so helpful! > > I think with a load of maths I can iterate through each of the squares > in the grid as it will only be black and white - unless Camellia or > RMagick have any sort of compare pixels functionality? Looks like find_similar_region might be what I'm looking for - love this language! -- Posted via http://www.ruby-forum.com/.