On Tue, 11 Jan 2011, Bernhard R. Fischer wrote:
Hi!
I'd like to prepare the import of data of the "List of Lights" (marine lights,
necessary for sea charts and navigation). According to the OSM-Wiki/Imports I
shall post this here and describe the import in short.
The original data source is publicly downloadable from here:
http://msi.nga.mil/MSISiteContent/StaticFiles/NAV_PUBS/NIMA_LOL/Pub110/Pub110bk.pdf
After import, there will be duplicates, approximately 2000 (according to my
current investigation, but I will work this out more precisely). I think, that
an automated matching of duplicate nodes will be impossible because the List
of Lights contains objects at much higher density which makes script-based
distinct matching impossible.
Have you considered spatial matching? For each light you want to import
check to see if there is already a light within x meters (say 10-20?) if so
excluded the light from the import and leave it to be manually inspected?
Best regards,
Bernhard
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