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Maybe a gift card?

January 9, 2009, 1:44 pm

Several people ask of the WPA graphing question, why not use a log scale? Commenter Stinky (no, I don’t know who s/he really is) kindly supplies a graph showing just this. For my money, it speaks for itself—which is to say, it screams, “don’t use me!”

We want to accomplish two things: (1) show how very outsized a chunk of money went to highways and (2) show also meaningful distinctions among lesser expenditures.

The log scale permits (2) while pretty much wiping out (1), unless you know how log scales work. I don’t think the likely consumers of such a graph do really know. But I’m wrong, Stinky says.

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