[GRASS-user] gpsbabel and garmin_txt, v.in.garmin, v.in.gpsbabel - with garmin etrex

[Hamish]

Philipp Steigenberger wrote:
> I tried a little more to get my data from GPS. No that I installed
> the newest version of gpsbabel it also works that I get the
> aptitude-values using v.in.gps.babel. My goal is to generate a
> DTM from this data, so I'm happy now.

note GPS positions will be about an order of magnitude less accurate in
the vertical than in the horizontal, don't be surprised if a standard
handheld GPS differs in the vertical by +-20m. also note that the
elevation given is height above the WGS84 geoid, not above sea level.


Hamish




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