[josm-dev] Unclosed ways

[Dirk Stöcker]

On Thu, 10 Jul 2008, Frederik Ramm wrote:

> If I were you I'd write a simple script to parse a planet file and
> dump the tags of every way where the last node equals the first.
> Straighforward to write, doesn't even require memory (node id
> equality is sufficient, node position not required), just a few hours
> of cpu time. That will give you a very good idea of how people tag
> areas; of yourse you'll have some circular roads, roundabouts etc. as
> well but it should be obvious to the human being which are meant so
> be areas.

Results are (europe):

  closed   unclosed
   43524 :    1962 : amenity
   16873 :     867 : area=yes
  127056 :     740 : building
  117885 :    3931 : landuse
   32448 :     716 : leisure
  141101 :    3390 : natural
     607 :      12 : shop
    6117 :     181 : sport
     628 :      69 : tourism
     739 :     158 : waterway=riverbank

--> These I added to the checks. The unclosed numbers are so little 
compared to the closed ones, that I think these are very likely errors.

   36769 :   16527 : junction=roundabout

--> Here probably the check needs to be disabled. User input required for 
decision.

   74354 :   35558 : natural=coastline

--> These should be detected by the start/end distance check.

Validator plugin changed accordingly :-)

Ciao
-- 
http://www.dstoecker.eu/ (PGP key available)