[OSM-talk] Choice of GPS for bicycle use in London

[Nick Whitelegg]

>Yes, my Garmin eTrex Legend (B&W) produces poor track data (ie very poor
>accuracy) in the urban canyon and below tree cover (leaves really do 
confuse
>the poor thing). 

I've found the eTrex Legend passably accurate in most scenarios. It's 
better in rural than urban areas, but even still I have mapped large 
numbers of streets in residential parts of Southampton and the maps do 
seem to correspond passably well to reality. That said, I have done little 
if any mapping in city *centre* areas.

Tree cover in winter and early spring isn't too much of a problem; even in 
summer it takes 10 minutes or so of walking through a wood to cause 
problems. The only scenarios I've had serious problems with are wooded 
valleys. Even if it does 'go', IMX the resulting map is normally good 
enough for walkers.... there may be a few 'kinks' in the path which do not 
show, but the general direction of the path is evident and doesn't go 
seriously astray. That said, I've never attempted to map a large, dense 
wood.

Nick