1. Pathfinder GPS cue sheet generator
Members:
Kurt, Hang, Weston, Jungyul, Ka Long 1

2. Motivation Cyclists create GPS track files on rides
Track files are sets of latitude, longitude, and elevation points
We wanted to convert tracks into cue-sheets, i.e., lists of turns and distances (reverse-geocoding)
Kurt

3. GPX Snippet
KML Snippet KL

4. Cue Sheet
Ride Map KL
Turn Map

5. Pathfinder Program Features
GPX and KML track file input
Ride map and turn map generation
Annotation function for adding points of interest (POIs)
Elevation profile
Cue sheet generation and output as CSV and HTML files
Jungyul

6. Design Decisions Client vs Server Side Static vs Dynamic Maps
Geocoding service or no geocoding at all?
Platform, Mac Windows Linux all of the above
Language Choice
Weston

7. Pathfinder Program Description
Client side application
Written in C#, runs on .Net framework on windows and mono on Mac and Linux.
Leverages Google reverse geocoding API and Geonames.org reverse geocoding service and Google static maps.
weston 7

8. Demo 1/10/11 Opening a file Generating cuesheet
Moving back/forward through turns
Different map view types
Adding POI
Viewing elevation profile
Show exported CSV and HTML files (already loaded)

9. Technical Highlights
Douglas-Peucker waypoint minimization algorithm: recursive, divide and conquer
Address cache: Left Leaning Red-Black Tree
Geonames geocoding service fail-over
Custom map painting API, map registration
Hang

10. What We Learned
Google Code: Subversion (SVN), Wiki and file repository are useful for group project
Regular meetings, value of face to face time
Benefit of crafting good documentation
Rapid prototyping and design very useful, made possible by choice of tools
Kurt