FYI I've fixed up the GPS package [1] (not previously announced) so it now has a correct distance calculation, new addVector function, and a separate module for the KML export functionality. This is just something I pretty up if/when I need it; let me know if you find it useful and I'll be more likely to maintain it. Features: For Coordinates (single points) Distance, heading and vector calculations Typeclass interface that allows other coordinate schemes (ex: MGRS) to be developed Path distance computation Minimum distance between distinct paths (trivial, computationally expensive) For locations (a point at a given time) and trails (lists of locations) Speed calculation Path smoothing Rest location filtering Basic KML exporting is also available in Data.GPS.KML TODO * Some day I'll have a GPS logger and make a parser for the NEMA format. * Fix or eliminate KML exporting. This should be a different package and is currently an ugly hack. * Add a path intersection algorithm * Make Data.GPS.MGRS Thomas [1] http://hackage.haskell.org/package/gps