How to edit regions / polygons

Hello,

there is a (totally) wrong polygon spanning some region in Austria:

http://nominatim.openstreetmap.org/details.php?place_id=541921&zoom=13&lat=47.2548&lon=17.15162&layers=BT

This polygon is much too large for the region it should show (“Oberpullendorf”) and therefore a lot of places in nominatim are incorrectly assigned to this region.

How can I correct this polygon shown in the map? I wasn’t able to find it in potlatch or JOSM, any help how to do this would be appreciated.

Thanks and regards,
Georg

I think it’s “generated” from a single node :
http://www.openstreetmap.org/browse/node/240073587

I’ve been there already: how is the location and size of this polygon derived from the data of this node (240073587)?

I did not find any attribute/tag to change which might affect the area.

For place= tags on nodes, I think Nominaton just has to estimate the area it covers. I think it uses the place tag, ie city covers a large area than town etc, plus what other areas are nearby. And its not always very accurate.
If you know the boundaries for this region, then draw a way (or relation) around it, and tag it as place=region, name=Oberpullendorf etc, and delete the node.

ok, I’ve tried that and created way http://www.openstreetmap.org/browse/way/47844650 and moved all the tags from the point to the way.

Lets see if Nominatim picks this up correctly