[mkgmap-dev] Missing island names

Fri Mar 19 19:19:09 GMT 2010

Hi WanMil,

> first of all: you should not run mkgmap with the patch I created for  
> you. I don't know for sure but this patch might have an impact on the  
> tagging.

No worries, I reverted your patch before generating today's map. I just  
double-checked, and I did recompile mkgmap.jar too. So, your diagnostic  
patch for reporting the underlying way IDs for generated polygons was  
not playing any role in this.

> If you have the same problems without the patch it might also be  
> caused by the generate-sea code. Copying of names from original ways  
> to the artificial multipolygon ways seems to be a bit inconsistent.  
> Or in other words: I didn't understand some parts of the tag handling  
> there :-)

Good point, but why would the Karjamätäs place=islet on the  
waterway=riverbank multipolygon in Tornio be unnamed? That was not  
handled by generate-sea. Or to pick a bigger island far away from any  
natural=coastline, Himalansaari on Saimaa:  
http://www.openstreetmap.org/browse/way/25581849
The name is missing from my gmapsupp.img.

The island Himalansaari in the lake Saimaa is an interesting example,  
because it contains some lakes. Those lakes should be named neither  
Saimaa nor Himalansaari. They should be just unnamed if no name has  
been given to them (currently no name has been assigned to them in OSM,  
and they are unnamed in the gmapsupp.img according to QLandkarteGT).

> Maybe it's worthy having a look on it.

Could you first have a look on the names in normal multipolygons? Would  
naming the islands require drawing the islands with named land polygons?

	Marko