[mkgmap-dev] problem with splitter and bounding polygon

Tue Mar 1 21:23:40 GMT 2016

Hi,

I'm trying to compile a map of USA using North America extract form 
Geofabrik. I use splitter r427 with bounding polygon, something like that:

splitter --polygon-file=usa.poly ... north-america-latest.osm.pbf

The result is that I get errors in mkgmap:
SEVERE (MapFailedException): pbf\29729241.osm.pbf: (thrown in 
BufferedImgFileWriter.ensureSize()) There is not enough room in a single 
garmin map for all the input data. The .osm file should be split into 
smaller pieces first.

This error appears for some tiles at the map border.

My guess is, that splitter uses only nodes inside bounding poly to 
compute tiles sizes. When a rectangular tile is placed on a polygon 
border, estimated node number could be significantly smaller than the 
full number actually saved in this tile. This could lead to problems as 
above.

I don't have any suggestions for a solution, so I'm going to try to go 
around it using a simplified poly. I hope, that maybe someone could get 
an idea how to correct it.

-- 
Best regards,
Andrzej