[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 

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.


Christopher Barker, Ph.D.

Emergency Response Division
NOAA/NOS/OR&R            (206) 526-6959   voice
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Chris.Barker at noaa.gov

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