[OSM-talk] Large cadastral polygons

Warin 61sundowner at gmail.com
Fri Jun 12 23:29:54 UTC 2020


On 13/6/20 1:37 am, Paul Johnson wrote:
> On Fri, Jun 12, 2020 at 10:28 AM Florian Lohoff <f at zz.de 
> <mailto:f at zz.de>> wrote:
>
>     On Fri, Jun 12, 2020 at 02:14:15PM +0200, Mateusz Konieczny via
>     talk wrote:
>     >
>     >
>     >
>     > Jun 12, 2020, 13:59 by f at zz.de <mailto:f at zz.de>:
>     >
>     > > Changeset envelopes which span more than 100s of km² are broken.
>     > >
>     > Except cases where you edit/delete already created huge objects
>     or you create
>     > huge object that actually should be created.
>     >
>
>     These types of objects should be pretty exceptional. I try to split
>     landuses to sub 1km² because i also feel the pain for
>     rendering tiles. As soon as someone touches those areas you invalidate
>     tons of tiles. So breaking this down also benefits us long term
>     concerning workload on the tile servers.
>
>
> Not just that, but cadastral type tags probably shouldn't be spanning 
> large areas to start with.  If your landuse or landcover polygon is 
> crossing an unclassified or higher highway, you're probably making a 
> big mistake. landuse=residential is NOT a substitute for 
> place=neighborhood (something I see a lot).


Hummm.. the following military areas are used as a rocket test firing 
area. Spiting them up into 1 km square areas would be a lot of work! 
Total area is approximately 122,188 km².

Ways 544274312, 436690530 and 436098551.


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