Map projection humour...

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Last Post by Cliff Mugnier 13 years ago

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itsmagic

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Topic starter

Thanks to the good people at xkcd comics...

Posted : March 28, 2012 8:41 am

Steve Owens

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Funny! Thanks...

Posted : March 28, 2012 8:50 am

dave-karoly

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Mercator is for navigators (dead reckoning).

Posted : March 28, 2012 5:18 pm

rankin_file

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:good: funny!

Posted : March 28, 2012 7:31 pm

Cliff Mugnier

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Dave,

It's for Surveyors too. All of the Safety Fairways in U.S. Waters are ellipsoidal loxodromes (rhumb lines), and therefore when setting platforms offshore, the surveyor must be sure that they do not set the platform in a lease block that also is within the Safety Fairway. It's an iterative problem to solve for the intersection of an ellipsoidal loxodrome with a constant Grid line that is in either a Lambert Conformal Conic projection (Louisiana or Texas) or a UTM Grid offshore everywhere in Federal Waters.

Posted : March 29, 2012 10:55 am