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Because it's Friday: Mercator Jigsaw

I used to think I was pretty good at geography. So I thought this Mercator Puzzle, where you just have to move 15 country outlines (out of place, but not rotated) to the actual country locations on the map would be pretty easy. It's not. (Via FlowingData.) The problem is that this map (like most maps) uses the Mercator Projection to represent a 3-D surface on a 2-D plane. This translation from globe to page distorts country outlines, especially near the equator. That's why most people think Australia is smaller in landmass than the USA, when in fact it's about the same size as the lower 48. (Australia's the easy one to spot in this puzzle -- drag it over the USA to check and see.) When I was at school in Australia we'd often see equal-area Peters Projection maps on the wall (sometimes even with South at the top), but that projection isn't without its own issues.  Enjoy the weekend! 

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More Stories By David Smith

David Smith is Vice President of Marketing and Community at Revolution Analytics. He has a long history with the R and statistics communities. After graduating with a degree in Statistics from the University of Adelaide, South Australia, he spent four years researching statistical methodology at Lancaster University in the United Kingdom, where he also developed a number of packages for the S-PLUS statistical modeling environment. He continued his association with S-PLUS at Insightful (now TIBCO Spotfire) overseeing the product management of S-PLUS and other statistical and data mining products.<

David smith is the co-author (with Bill Venables) of the popular tutorial manual, An Introduction to R, and one of the originating developers of the ESS: Emacs Speaks Statistics project. Today, he leads marketing for REvolution R, supports R communities worldwide, and is responsible for the Revolutions blog. Prior to joining Revolution Analytics, he served as vice president of product management at Zynchros, Inc. Follow him on twitter at @RevoDavid