On Mon, 24 Sep 2018 at 16:06, Joseph Eisenberg <joseph.eisenb...@gmail.com> wrote:
> > That’s why we need to check the height of saddles and peaks “by hand”, or > better yet by survey with GPS. > Joseph, just a technical question, thanks, as I don't understand *any* of the details of what you're wanting to do! :-) How do you determine the height of the saddle / peak? Do you sit there & say that that mountain peak is shown on my map as 4500m & I'm about 300m down, so this saddle is 4200m? & when you say survey with GPS, is that accurate enough for an altitude reading? With my Garmin GPS (which admittedly is 10 - 15 years old, but *wasn't* a cheap one!), I can calibrate it in the back yard at 6m ASL, go for a day trip & when I get home, it displays the exact same spot as anything between -5 & +30m ASL :-( When out driving, I've also seen the altitude display change by 100s of m's instantly, when the road is virtually flat. Thanks Graeme
_______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
