[Talk-us] holes in Columbus OH?

Philip Barnes phil at trigpoint.me.uk
Tue Jun 12 13:04:48 BST 2012

On Tue, 2012-06-12 at 07:52 -0400, Phil! Gold wrote:
> * Peter Dobratz <peter at dobratz.us> [2012-06-12 00:45 -0400]:
> > There seem to be a lot of holes in the multipolygon relation, and it
> > seems strange to me that there are so many places within the city that
> > are not part of the city.  Is anyone more familiar with this area that
> > give an explanation for this?
> It's not uncommon for cities to have unusual shapes, including holes like
> that, as they can have annexed land around but not within a given area.
> In the specific case of Columbus, the holes look legitimate.  I looked up
> Columbus on Wikipedia and found this map of the city:
>   https://en.wikipedia.org/wiki/File:Columbus_Overview_Map-150dpi.png
> The white part is the city proper and the colored parts are independent
> suburbs, which seems to match (to a first approximation) the OSM data.
Sounds likw what we, in Europe, call enclaves. There used to be county
enclaves in the UK, but I think they have all been cleaned up now.

If you want complecated, international, borders try


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