Geocoding Unix timestamps

Sun, 07 Jun 2009 00:07:43 -0000
eng, openmoko, osm, pdo, sw, tips

Geocoding EXIF tags in JPEG images is fun, but there is more that can benefit from interpolating timestamps over a GPX track.

Enter gpxinterpolate:

$ ./gpxinterpolate --help
Usage: gpxinterpolate [options] gpxfile [gpxfile...]

Read one or more GPX files and a list of timestamps on standard input. Output
a GPX file with waypoints at the location of the GPX track at the given
timestamps.

Options:
  --version      show program's version number and exit
  -h, --help     show this help message and exit
  -v, --verbose  verbose mode

For example, you can create waypoints interpolating file modification times:

find . -printf "%Ts %p\n" | ./gpxinterpolate ~/tracks/*.gpx > myfiles.gpx

In case you wonder where you were when you modified or accessed a file, now you can find out.