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... your code will also match for rgb(2,2,4) etc. I do not believe so. Given,
And assuming for simplicity, 3-bit/color images, the data would be encoded as
Anding the 3 bitstrings selected by rgb( 2,2,4 ) (* above) together
So, for the simple case of looking up one rgb value at a time, there is no overlap. For the more complex case of locating images that contain either rgb( 1,2,3 ) or rgb( 2,3,4 ), there is the problem that oring all six selected bitstrings together would also select rgb( 1,2,4 ) and rgb( 1,3,4 ) and rgb( 2,2,4 ) etc., but that is different from the problem description, which is more akin to r = 1 or 2 and g = 2 or 3, and b = 3 or 4, for which my For the case you describe, that of only matching those images that contain either rgb( 1,2,3 ) or rgb( 2,3,4 ), you have to do it in two separate operations. And the individual strings of the first 3 values together and extract the image identities from the result. Then do the second set of three and extract the image identities. Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
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In reply to Re^3: multi-dimensional range lookup
by BrowserUk
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