[mkgmap-dev] Bogus warnings about intersected ways in multipolygons

Tue Jan 26 18:05:39 GMT 2010

> On Mon, Jan 25, 2010 at 09:39:56PM +0000, Adrian wrote:
>> I don't think these warnings are bogus. Mkgmap definitely has problems
>> with multipolygons. The Languedoc-Roussillon extract (southern France)
>> from Geofabrik provokes about a hundred of these warnings. But I believe
>> that the intersected ways are being generated by mkgmap and that the OSM
>> data is OK.
>
> That is what I meant by "bogus": the input data is correct, and mkgmap
> is doing something wrong.  The browse URL that I posted was for a block
> house in Helsinki, nowhere near my tile boundaries.
>
> 	Marko

Marko,

I tried to reproduce your problem but I wasn't able to.
I downloaded the geofabrik dump of finnland of today and run splitter on 
it with the default settings.

Then I started mkgmap (current trunk version) and no warning for the 
multipolygon 5828 was issued.

Here is the log for the processing of mp 5828.

2010/01/26 18:46:45 FEIN (MultiPolygonRelation): Construct multipolygon 
http://www.openstreetmap.org/browse/relation/5828
2010/01/26 18:46:45 FEIN (MultiPolygonRelation):   outer 
http://www.openstreetmap.org/browse/way/22467513
2010/01/26 18:46:45 FEIN (MultiPolygonRelation):   inner 
http://www.openstreetmap.org/browse/way/22467516
2010/01/26 18:46:45 INFO (MultiPolygonRelation): Processing multipolygon 
http://www.openstreetmap.org/browse/relation/5828
2010/01/26 18:46:45 FEIN (MultiPolygonRelation): Joined 
4611686018427388656 with 22467513
2010/01/26 18:46:45 FEIN (MultiPolygonRelation): Joined 
4611686018427388657 with 22467516
2010/01/26 18:46:45 FEIN (MultiPolygonRelation): createContainsMatrix 
listSize: 2
2010/01/26 18:46:45 FEIN (MultiPolygonRelation): check polygon 0
2010/01/26 18:46:45 FEIN (MultiPolygonRelation): check polygon 1
2010/01/26 18:46:45 FEIN (MultiPolygonRelation): createMatrix for 2 
polygons took 0 ms
2010/01/26 18:46:45 FEIN (MultiPolygonRelation): Containsmatrix
2010/01/26 18:46:45 FEIN (MultiPolygonRelation): {1}
2010/01/26 18:46:45 FEIN (MultiPolygonRelation): {}

WanMil