[Talk-is] ourFootPrints.de gögnin að koma á OpenStreetMap
tweak at tweak.net.au
Sun Jan 17 20:29:11 GMT 2010
Ævar Arnfjörð Bjarmason wrote:
> Tom að mestu rakið vegi bæði frá egin GPS ferlum og u.þ.b. 30 annara
> sem hafa sent honum gögn en hann segir að um 95% af kortinu sé búið
> til svona, 5% er teiknað eftir lokuðum kortum (LMÍ kortum geri ég ráð
> fyrir), ár, vötn, jöklar og strandlengjan eru svo teiknuð eftir Google
> Satellite myndum.
How did you go about excluding the 5% that were copied from other maps? You do
know that importing this has totally corrupted any claim OSM might have on being
completely clean data?
Further, what possibly motivated you to import this over reykjavik? We now have
a great big pile of vomit, with no real known source or age, whose only real
qualification is that a bunch of Germans made it before OSM existed. Good for
While this surely has some very positive outcomes in unmapped areas, in other
areas we now just have a mess that someone has to go out and _resurvey_ just to
try and work out which one is right.
Further, large chunks of the OFP import in reykjavik isn't even _semantically_
correct, let alone geographically correct. Roads that overlay, but don't
intersect, Roads drawn as straight lines, which may have been straight on
original city plans, but clearly are not when you stand on the street, roads or
connections that don't exist anymore.
In some other parts of the country, this was _possibly_ a good idea, but I'm
sorry, I really think this was a bad idea to import the whole lot.
I'm particularly concerned with the 5% with bad sources.
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