Scot's Maps

 

Scot carries a DeLorme GPS receiver connected to his Palm Pilot.  The Palm Pilot samples and records his position in latitude and longitude at regular intervals.  At the beginning of his trip he sampled every 5 minutes, but later changed to 10 minutes to conserve battery power.

Scot's GPS positions are plotted using the US Census Bureau's Tiger Mapping Service, a public-domain source for high-quality, detailed maps of any location in the United States, using public geographic data.

Three map scales are used.

US Map
Shows the final GPS sample of the ride in Denver, Colorado.
Shows the final GPS sample each day.

Maps showing several days together
Shows the final GPS sample each day.
Shows GPS samples along the way.  Some samples have been removed so that the dots do not pile up on top of one another. Blank sections are where Scot's batteries failed (or he forgot to turn on the GPS:-) .

Maps showing a single day's ride
Shows the final GPS sample each day.
Shows all GPS samples along the way.   Blank sections are where Scot's batteries failed (or he forgot to turn on the GPS:-) .