1. A method comprising: receiving, by one or more processors, one or more wireless network access point identifiers and signal strengths for a geographic area; quantizing, by the one or more processors, the received signal strengths into a plurality of quantized signal strengths for each received wireless network access point identifier; and generating, by the one or more processors, for each received wireless network access point identifier, a map including a plurality of representative rectangles, each rectangle of the plurality representing an equivalent quantized signal strength.