[mkgmap-dev] Polygon with barrier problem

Mon Jan 25 16:28:02 GMT 2010

WanMil wrote:
> What do you mean with "tagging the 'inner' of a multipolygon"? I have 
> reimplemented the whole mulitpoylgon code so I am very interested in 
> problems that still exist.
>
> Can you give a relation id which makes problems?
I'm using r1505 on an Oregon 300 using the latest firm/software.

http://www.openstreetmap.org/browse/relation/383291

With these tags added to the inner relation the void doesn't fully show 
on the Garmin. There is a thin slit where it should be a sort of sausage 
shape.
    <tag k='name' v='River Avon' />
    <tag k='waterway' v='riverbank' />

Because there's that slit it's as if with those tags, the inner polygon 
has been some width.

If I remove them it works.

I thought it might be because I also had waterway=river, width=15 but by 
using an extraction of OSM & deleting those ways manually from the XML 
data, I verified that wasn't the cause.

Cheers
Dave F.