Population Heat Map

From CraigStats, the image above shows the population per square mile in the San Francisco area as a pseudo heat map. The site also has combined the apartment listings on Craig's List with Google maps to create pseudo heat maps showing the areas with the most apartments.

Comments

[Ben]

keep intensity as population density, but conditional color on a white map, representing
YoY change in median price per neighborhood illustrating how value has changed with the recession