Creative Class Absent From California?

On his blog, the author Richard Florida posts a PDF of a heat map of the creative class he defined in his book of the same name. Much of the creative class lives in the Eastern part of the US, according to Florida, with very few living on the West Coast in places like the the Bay Area. Florida says:

The map shows the “heat” being generated by the Creative Class across the entire U.S. There are a few hot spots in the west, but unlike their compatriots in the east, they don’t get to share the warmth generated by their neighbors. The hot spots are New York City to Philly, metro DC, central & eastern Virginia, Atlanta, and the Cincinnati, Lexington, Louisville “triangle”. I generated the map based on current Creative Class numbers and plotted the log of the total number of Creative Class members in each county. The heat mapping process is based on both individual strength and proximity to others and their values, so the higher population densities favor the eastern states.

The Creativity Exchange: Feel the Creative Heat