Hi Christoph,
Sorry, after I sent my email I noticed I wasn't in the imports mailing
list.
Planimetrics represent whatever the ground condition was when the data was
created and updated, which is almost always done with high res
orthoimagery. If someone demolishes a shed in their backyard, the
Generally the planimetric CAD drawings (what Stewart posted) are/were the
source for most municipal building footprints, from what I've seen in my
experience. In some cases the footprints are still maintained in that
format and exported out for GIS, while in other cases they're now
exclusively
There is also a factual basis in the example Scruss provided:
https://wiki.openstreetmap.org/wiki/File:12.PNG
TD Place(Renovated/New buildings constructed in Summer 2014) is not mapped
in the DWG(scruss said as far back as 2011)
In the newer data it is:
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