[Proj] Re: "Double ellipsoid" case?
Christopher Barker
Chris.Barker at noaa.gov
Wed Dec 3 13:43:19 EST 2008
>> The practical consequence is that they do not have a conformal projection;
>> hence local distances measured from a point are not quite uniform in all
>> directions,
measuring distance is a problem with Mercator anyway -- the scale varies
with latitude -- a lot more that difference between a sphere and an
ellipsoid.
One thing that IS absurd is that Google maps puts a scale bar on every
map -- even the whole earth scale, where it is essentially meaningless.
-Chris
--
Christopher Barker, Ph.D.
Oceanographer
Emergency Response Division
NOAA/NOS/OR&R (206) 526-6959 voice
7600 Sand Point Way NE (206) 526-6329 fax
Seattle, WA 98115 (206) 526-6317 main reception
Chris.Barker at noaa.gov
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