As some of you may have noticed, Cyclogz’s estimates for cumulative ascent and descent can some times be wrong. Most notably, the difference between actual vs our computation could be way off for non-barometric GPS units like Edge 205.
Cyclogz currently uses a smoothing average algorithm to smooth out the data and then compute the cumulative ascent and descent. This algorithm is soon going to be replaced with a better algorithm. When that is implemented, all rides will automatically be adjusted. I will keep you posted.
By the way, my friend Sanjay is working on analyzing the problem and coming up with an improved algorithm.