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Ok on the scaling

Hi Alex,

Ok, thanks for that update. I wouldn't say it is useless though! For one, you don't actually get more precision by multiplying all values by a constant, unless you are talking about interpolation. Two: for scientific images count numbers are actually important. For example, if you have astronomy images with different exposures, it is nice to be able to scale them to the same level, based on exposure count.

As long as I can multiply each image output by its scaling value in my external program, that's ok. What I really need is for output_color=0 to work with scaling off.