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# Android GPS Recorder ## Introduction The GPS Recorder is a small script that logs the current GPS location as frequently as possible. It uses Scripting Language for Android to run it in Python! ## Usage To run the recorder, start gps_recorder.py on the Android phone using SL4A. Instructions for this can be found on the SL4A site: http://code.google.com/p/android-scripting/wiki/RemoteControl After running the script, use get_output_files.sh to retrieve the logs from the phone. You can parse and plot the output using the utilty functions in data_viewer.py. You can also use the conv2gpx script to convert the recorded tracks to the commongly uses GPX (GPS Exchange) Format used by geotagging and tracking software such as Google Earth. The script will load all the gps recordings into one file, with one track per file, split into sub-tracks if no data was captured for a short period. To record the sensor data from the phone instead of GPS, use sensor_recorder.py. This is a direct copy/pasta from gps_recorder.py, written as a last minute hack to try to get high frequency data out of the phone. It should work fine. See the blog post for more info. To record the apparent bearing from the device, use bearing_recorder.py. This uses the accelerometer to determine which axis is vertical, and then works out the apparent magnetic bearing. This may not be accurate. Bearings are measured clockwise from the positive x-axis around the vertical axis, unless x is vertical, in which case the bearings are made from the positive z-axis. ## Changelog v1.00: Initial release! ## Blog post A short blog post about this project is available here: http://blog.tophernet.com/2011/07/python-scripting-to-access-android-gps.html The source for this project is available on Github: https://github.com/topher200/gps_recorder ## License Copyright Topher Brown <firstname.lastname@example.org>, 2011. Released under the MIT license.