The document discusses the file structure and organization of GPX data files, which use the .gpx extension and XML format to store GPS data. The GPX file contains a header with metadata and track information, track segments containing ordered trackpoints with latitude, longitude and other data like elevation and timestamps, and a footer to close the XML tags. Trackpoints can include additional data recorded by smartphones or devices like the Garmin.

1. 1
GPX
FILE STRUCTURE
EXPLANATION HOW GPS DATA ARE ORGANIZED

2. 2
FILE STRUCTURE
ABOUT DATA ORGANIZATION
.GPX EXTENSION
gps
data
xml file
format
gpx file

3. 3
FILE STRUCTURE
ABOUT DATA ORGANIZATION
HEADER
<gpx

4. 4
FILE STRUCTURE
ABOUT DATA ORGANIZATION
HEADER
<metadata> <time>

5. 5
FILE STRUCTURE
ABOUT DATA ORGANIZATION
HEADER
<trk> <name> <trkseg>

6. 6
FILE STRUCTURE
ABOUT DATA ORGANIZATION
FOOTER
</trkseg> </trk> </gpx>

7. 7
FILE STRUCTURE
ABOUT DATA ORGANIZATION
TRACKPOINTS - SMARTPHONE
<trkpt lat lon>

8. 8
FILE STRUCTURE
ABOUT DATA ORGANIZATION
TRACKPOINTS - SMARTPHONE
<ele> <time> </trkpt>

9. 9
FILE STRUCTURE
ABOUT DATA ORGANIZATION
TRACKPOINTS - GARMIN
<extensions> atemp hr cad