Okay,
249 points in my track. For BASECAMP, the point-by-point view is showing a total distance of 14.7 miles. However, the elevation view is showing 12.2 miles.
Likewise, when I have one point selected in the point-by-point view, I noticed different elevation numbers between the two views. For example, point-by-point for point 100 showing 5024 ft whereas the point selected on the elevation view shows 5038.3 ft.
Comparing the two BASECAMP estimates of distance to what shows on my Oregon 600 - 14.72 mi. the point-by-point view matches. However, the 600 is showing me an elevation gain of 5411. This differs greatly from what is being show in the bottom summary window of the point-by-point view -- 4783 for ascent.
Summary:
MILEAGE
Basecamp point-by-point view (total shown at the bottom): 14.7 mi
Basecamp elevation view (total shown when all points in the point-by-point view are selected): 12.2 mi
Garmin 600: 14.72
ELEVATION GAIN
Basecamp point-by-point view (total shown at the bottom): 4783 ft (ascent); 4579 (descent)
Garmin 600: 5411 ascent / 5202 descent
Interestingly, the ascent/descent numbers show about the same difference between the two calculations (204 ft and 209 ft) - I assume that this could tell me something about the basic error in the GPS. However, I don't know what to make of the differences in the two totals in either the elevation or the miles.
I understand that there are sampling differences. However, it is not obvious to me what they should add up to such a great difference. As sampling inaccuracies should be equally likely to be overestimate for any given point or underestimates they should more, or less, balance out. Hence the differences in the ascent/descent numbers make sense to me.
But what about the large differences between total ascent and total miles?? How far did I walk yesterday??? And how many feet did I climb??
Thanks
