A visualization of almost one year’s worth of GPS tracks recorded in New York. I wrote simple GPX and KML functions in Processing to import and display the geographic data. Each track generates a circle centered on the first location in the track; the size and color of the circle is tied to the linear distance from the first point of the track to the point most recently drawn.
GPS data recorded with Google My Tracks (mytracks.appspot.com) running on a T-Mobile G1.
Graphics in Processing.
No audio.

2010
An earlier sketch of the animated geographic visualization of New York without the colored distance circles; the monochrome rendering of the accumulated GPS tracks evoke chalk drawing on slate or dark paper.
GPS data recorded on a mobile phone.
Graphics in Processing.
No audio.