This map shows the dropoff locations of all taxi rides that started outside Larry Flynt's Hustler Club between midnight and 6am during 2013. The yellow markers reflect clusters - several points that occur close to each other - and may be interpreted in some cases as individuals who visit the club frequently.
I did also specify that each trip had to be further than 5 miles in distance. Manhattan is generally too densely populated to isolate individuals, so the information from these shorter trips would be less meaningful. This greatly reduced the data processing requirements, providing improved clarity and interactivity.