> Length is measured in a variety of units, but the degree ain't one of 'em.
Mostly I was just being silly. But the relevant part is that people do a lot of useful work using values that are not in "proper" units, and don't follow the rules as they should. >From things as simple as using kg as weight or lbs as mass, to really oddball stuff like using degrees of latitude as a distance[1]. (or may favorite: API Gravity [2] as a density) Which doesn't mean that proper units are very useful, but a lot of flexibility is needed for many practical uses. -CHB [1] when you are looking at a nautical chart, which are most often in the Mercator Projection, the scale changes with latitude. So it's very handy to use the latitude scale on the map to measure distances -- 1 minute latitude is one nautical mile -- granted, you usually do the conversion directly in your head, or setting it on a dividers, but you ARE measuring distance in latitude minutes. [2] https://en.wikipedia.org/wiki/API_gravity -- Christopher Barker, PhD (Chris) Python Language Consulting - Teaching - Scientific Software Development - Desktop GUI and Web Development - wxPython, numpy, scipy, Cython
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