Amongst other things, I like to keep a detailed track of where I have been [especially during hiking in the woods, venturing into areas that I have never been before, etc.]. For this purpose, I have configured my Garmin GPSMap 60CSx to record location/date-time data every three seconds and a while ago, I described another API I wrote to store these track points in MySQL. Added advantage of this, as I have mentioned before in previous posts, is that it can be used for geotagging my photographs. For completeness sake, the MySQL table structure that holds track data is given below:

Continue reading … “PHP – Computing Total Travel Distance From GPS Tracks”