[OHM] [OSM-talk] NYPL / map-vectorizer - An open-source map vectorizer

Lester Caine lester at lsces.co.uk
Sat Jan 18 14:11:09 UTC 2014


John Levin wrote:
>> @LesterCaine: I dislike the French pdf extractor, but because it has
>> enabled a lot of poorly thought through imports. The cadastral data
>> which it extracts is really nothing more than lines and parcel numbers,
>> so no real data lost. The accuracy seems OK (at least compared with hand
>> tracing cadastral parcels in JOSM).
>
> Hi,
>
> What is this french pdf extractor? Got any info, link etc?

This is the automatic import of the French Cadastre data 
http://translate.google.com/translate?hl=en&sl=auto&tl=en&u=http%3A%2F%2Fwiki.openstreetmap.org%2Fwiki%2FWikiProject_France%2FCadastre%2FImport_semi-automatique_des_b%C3%A2timents 
is the best we get in English but I think there were some other translations of 
the relevant tools when this was discussed on this list. The quality of the 
rendered shapes leaves a lot to be desired, and people were simply dumping the 
raw data onto OSM rather than following the French guidelines and manually 
tracing with some human interpretation of the data.

http://www.remote.org/frederik/tmp/funnybuilding.png was an example Frederik 
posted at the time, but there where many more.

-- 
Lester Caine - G8HFL
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