Jim, I think you go straight to the problem with using 1, or any number, as an indication of 'dimensionless'. If I can't create a meaningful result with linear math relations, than saying the unit is 1 invites difficulties.
That said, 1 seems better than .001. :-) john On May 27, 2015, at 11:19, Jim Biard <jbi...@cicsnc.org> wrote: > Ah... > > So the issue here is that we could have salinity recorded as any one of: > arbitrary unitless scale from 0.0 - 1000.0 > arbitrary unitless scale from 0.0 - 1.0 > parts per thousand > grams per kilogram > where by "arbitrary unitless scale" I mean it's a scale that doesn't have a > direct linear relationship to parts per thousand or gram per kilogram. > So, from a UDUNITS standpoint, this is a problem, because it (and ignorant > me) happily assumes that units of '0.001', and 'g/kg' are equivalent and > differ from '1' by a scale factor of 1000. > > Is this right? > > Grace and peace, > > Jim > >
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