Motionbased takes all kinds of files from all manufacturers?
Rob, I saw that map you posted the other day and noticed the GPSvisualizer.com on the image. I went there a played around with their stuff. It was really cool. I especially like how easy it was to integrate into google earth and the elevation profiles looked pretty good too. I haven't looked at easygps yet.
Beats me. I only know that it takes a direct feed from my Garmin eTrek Legend.
I just use Easy GPS to pull the data off my unit and save it. I don't do anything else with it but that, but I'm sure it has some editing features.
I love you. I mean, err, approved!! :biggrin:
I have no doubt that you are right. Looking at my elevation profile data I can see that it jumps up or down as much as 100 feet at time when it looses and then refinds the satelite signal. It wouldn't take too many jumps like that to really screw up the total. That's why you really have to look at your data and throw out the funky points. By the same token, gps data tends to really underestimate trail lengths because it straightens out curves, etc.
I usually only use the gps to see where I've been and not where I'm going. The screen (at least on my model) is just too small to get a real sense of where you are. If I'm going somewhere remote or unfamiliar like a national forest or something I carry paper maps and a compass. Plus maps and compasses very rarely run out of batteries.
My Foretrex seems to be reasonably accurate. It showed 21 miles when we did about 22 last weekend. I'm sure some of that was just rolling around in circles and some changes in signal, but it's close. I still use my regular cyclocomputer for distance calculations.
