Contrarian friend Gus Reed doesn't think altitude maps add much to our understanding of complex social issues: These graphs don't meet the minimum standard for clarity. Your pal Edward Tufte would be appalled. What is the scale of the z-dimension? Are we to suppose that the high peak for narcotics is on the same scale as the high peak for prostitution? Absolute numbers? Percentages? Logarithmic? I'm suspicious that McCune is mixing his units. And I don't like the fundamental assumption that it's OK to smooth this kind of data. Consider the three hills of...

15 June, 2010