I took a field trip with a colleague who is headed to Guatemala in a couple of days in order to test the elevation accuracy of the iPhone, iPad, and Trimble Nomad. I’ll post the results shortly. I discovered a feature in Google Earth that I didn’t know existed–the elevation profile. After adding a track we recorded of our hike back using MotionX HD on the iPad to Google Earth, it was easy to create an interactive elevation profile of the short trip. The yellow arrows show the point-of-interest on the path and the corresponding location on the elevation profile. Pretty cool!