OSM XML Polygon Code Example

Question

I want to know how to write code for polygon in OSM XML, I have tried to find it on internet but have not found something useful. SO Please let me know or give me some example of OSM XML Polygon Code.

Accepted Answer

Here's the simplest possible polygon, a triangle:

<way id="1" version="1" user="test" uid="1" changeset="1" timestamp="...">
  <nd ref="1" />
  <nd ref="2" />
  <nd ref="3" />
  <nd ref="1" />
  <tag k="building" v="yes" />
</way>

A polygon is just a way where first and last nodes are the same, and where the tags indicate that it is an area. (The same structure with a tag of junction=roundabout would not be interpreted as an area.)

More complex polygons - those with holes or where the outline is made up of several ways - are modeled using the multipolygon relations which is a bit of a misnomer since it is also used for polygons that are not "multi".

Answer 2

1	Usually you can click on any polygon in the map of www.openstreetmap.org while selecting the view data layer. From there it is possible to select a polygon and from the details page you can view the XML. permanent link answered 02 Apr '12, 21:19 frabron 361●1●4●11 accept rate: 16%

OSM XML Polygon Code Example

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