[josm-dev] self-intersecting ways

[Dirk Stöcker]

On Thu, 4 Mar 2010, Marko Mäkelä wrote:

> +1. Some days ago, I came across a mkgmap warning for a dead-end oneway
> in a residential area that was riddled with landuse polygons that shared
> points with ways. It was very hard to see that the oneway was not connected
> to the road it was supposed to. I spent several minutes detaching the
> landuses from the roads in the area.

>From my point of view landuses either cross streets or are glued to 
streets. Until we introduce area style streets there is no other sensible 
way.

The method to leave a little space beside the road is broken by design and 
as geodesy is my profession I have the little advantage that map making is 
a part of my profession. Databases where one feature did not directly join 
with the next one cause and caused a lot trouble in GIS and will also 
cause in OSM (when we start to use the data for something else beside 
making a map).

Regarding the duplicate nodes: Duplicate nodes are an validator ERROR 
whereas everything else you discussed here are warnings and informational 
state.

When JOSM really warns in cases where areas in line features overlap at 
the borders, than that warning needs to be removed.

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