[OSM-talk] OSM data density - top regions

[Alan Mintz]

At 2012-05-27 14:30, Frederik Ramm wrote:
>As of 27th May 2012, only 142 of these meta tiles have more than 100,000 
>nodes on them; the front-runner has a whopping 227,000. 105 are in France, 
>26 in the US, 3 each in Italy and Brazil, and one each in Spain, Japan, 
>Denmark, Austria, and Indonesia.

Of the US tiles, 6 are Kern County, CA and 9 are Cook County, IL, both of 
which have been the subject of recent discussion here about import of 
building outlines.

Here are some details about a small piece* of one of these Kern County tiles:

1667KB OSM XML

6036 nodes:
- 5702 nodes that are part of building ways
- 256 trees
- 69 highway nodes

525 ways
- 489 building ways
- 34 highways

That is to say this medium-density (4-5 houses per acre) residential 
neighborhood would have 78 nodes (1.3% of current) and 36 ways (6.9% of 
current) without the building outlines and trees. The OSM XML would be 31KB 
(1.9% of current).



* 0.5 mi x 0.5 mi (800 m x 800 m) at minlat='35.3979622' 
minlon='-119.1277814' maxlat='35.4052032' maxlon='-119.1188657'

--
Alan Mintz <Alan_Mintz+OSM at Earthlink.net>