This is my first "sphere reflecting [crimes] over a checkered [with a 
grid of city streets] plane" posting.

PinMaps are a relatively common technique where investigators and 
criminologists place pins in maps to help visualize where crimes occur.
Here, each pin represents a crime event, where the height of the pin
represents the time-of-day that the crime occurred.  I oriented all
the pins to face the camera, and angled them slightly so multiple events 
at the exact same location can be seen.

      Ron

Any feedback / suggestions appreciated.  I'm clearly not shooting for 
photorealism here - but any ideas about making the data easier to 
visualize would be much appreciated.

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