[mkgmap-dev] length () in relations file

Mon Feb 25 21:18:04 GMT 2013

Hi Wanmil,
That would be great, can it calculate the size of a  multipolygon as well (because a lake is often split up in multiple small sections). The area sizes of all polygons in a garmin img tile are visible with gpsmapedit, http://www.geopainting.com/

> I think I found a formula to calculate the area size in a metric unit.
> But I have a problem to test that because I don't know the real area
> size of an OSM polygon.
> 
> Can anybody please send some way (polygon) ids with it's real world
> area
> size?