
Use Your Track Memory as a GPS Base Map #55
Chapter 5, Mapping with Gadgets
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HACK
HACK
#55
Use Your Track Memory as a GPS Base Map Hack #55
Use your own past traces to provide you with context for street navigation
and low-rent GPS maps.
Newer GPS devices come with many megabytes of memory to store base
maps. Companies like Garmin and MAPSource (http://mapsource.com/) sell
CDs compiled from public domain data and some proprietary data to load
onto your Garmin device, providing you with context for where you are:
roads, names, places, and often small recommendation databases for local
services.
These GPS base maps provide context and help you to navigate, but some-
times they interfere with your own story. And other times, for various rea-
sons, there are no maps for where you are going. You can use your GPS to
create your own base map out of your tracklogs and waypoints.
Turn Off Your Base Map to Turn On Your Own Story
Maps tell stories, and the stories that maps tell both reflect and create real-
ity. Our experience of a place is created, or altered, through our interactions
with maps. We sit surrounded by our wealth of cartographic data, and we
forget ourselves and our own stories in favor of the authority of an external
mapmaker.
The base map in your GPS reflects (someone’s) reality, but it isn’t your
story. You build your own story over the course of your travels. Storing
tracklogs and setting