[OSM-talk-be] kadaster

[Chris Browet]

>
>
> Even for France, it is not so easy as it seems: what they are able to
> get are PDFs from which they extract vector information. This is then
> imported in JOSM with a coordinate transform (they have five or six
> different projections for France). For each town, the result has to be
> "fixed" for hundreds of buildings which have impossible or too
> complicated shapes in the cadastre, before they can finally import it.
> The process takes at least half a day of volunteer work for each town.
>
> This is the process to get vectorial (actually an SVG) from a PDF printed
from the Cadastre site.

The "less hacky" way (and, AFAIK, the way the JOSM plugin work) is to
request WMS images from the site and use it to draw over.
Using the WMS requires and handful of http request before being useable
though...

Furthermore, not the complete french cadastre is actually vectorized. Some
places only have scanned images.

- Chris -
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