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Google Earth or Map my ride? Route was plotted on maymyride and kml exported to google earth, so the exact same plotted data.
For example, corrieyarrick pass (laggan to FA):
Mapmyride:
max elevation 779m
gain 538m
distance 39.1km
Google Earth:
max elevation 777m
gain 914m (-1216m descent)
distance 39.4km
Which would you believe? quite a bit of difference.
Link to the route http://www.mapmyride.com/routes/view/19047828
I think google uses SRTM data so I wouldn't get too excited about the accuracy anyway, but even if they are both using that same data then the resolution of the route data will have a big impact on the end values.
Ha I just googled mapmyride and it seems lots of people find the height info wrong.
Google Earth was better for me over the mapping software that came with my igotu GPS logger...that came out with descents/ascents that were treble what was expected.
If you've plotted it by mouse clicks, then the altitude change info will be very innaccurate no matter what software you use.
If you've plotted it by recording the route on a GPS, it'll be better - no idea which software would be more accurate in that case.
It just was plotted by mouse clicks. The google earth one seems close though? as just looking at the graph, it seems alot more accurate from memory, and show more ups and downs, so i'd guess that is higher resolution? (I did this last year mind so my memory might be a little fuzzy, just using this route as i thought a few people might have done the route and have an educated opinion from experience) The mapmyride one seems a bit more vague and smoother in it's graph.
Actually that's a question, is there a GPS device that anyone can recommend that will track route data, and give you a current position reading that you could reference to a paper OS map?
Wouldn't need anything other than that really as I wouldn't rely on digital mapping.