[OSM-talk-ie] Let's put Drogheda on the map next weekend!
Christian van den Bosch
cjb at cjb.ie
Sat Aug 16 22:47:40 BST 2008
It's worth mentioning that the more modern, comfortable and efficient a
train service is - the less likely one is to get a decent GPS signal
inside it. Same problem as thermal-reflecting windscreens in cars. If
one can find a train old enough to have windows that open, and
suction-cup a GPS antenna to the outside - sorted!
Also trains running north-south are harder to get fixes in than ones
running east-west (the better view one has of the sky towards the
equator, the better).
Oh, if anyone has any questions or comments about the mapping party, by
all means feel free to ask me privately or on list.
Dermot McNally wrote:
> A further thought on the weekend: If some participants choose to
> travel by rail, we can fill in some gaps (and correct some glaring
> inaccuracy) in the Dublin-Belfast railway line. Those that I am aware
> * In Drogheda itself, the railway line is completely missing.
> * Newry Area: Here, the line was mapped (by me from an old trace), but
> so inaccurately that parts of it showed up on the wrong side of the
> A1. I've actually deleted a chunk where this was obvious.
> * Newry-Moira: Missing
> Much of the rest of the line has been mapped from Landsat, and we know
> how inaccurate that is. So if anybody is travelling by rail, this
> would be a useful trace to have.
Christian / cjb
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