[mkgmap-dev] Spurious points & Basecamp blank tiles

Sat Nov 5 19:21:31 GMT 2016

Hi,

I have been creating Garmin map from Finnish national topographic 
database and lately I updated the process to use mkgmap to convert OSM 
PBF files to Garmin IMG. I have encountered a problem with Garmin PC 
software showing blank tiles 
(http://kartat.hylly.org/mkgmap/mkgmap2.png) and digging further i 
discovered that there are extra points in IMG files on those tiles 
http://kartat.hylly.org/mkgmap/mkgmap1.png. These points does not exist 
in the source data (http://kartat.hylly.org/mkgmap/M431_osm.osm.pbf and 
http://kartat.hylly.org/mkgmap/mkgmap3.png) nor are those Garmin types 
referenced in any way in style files 
(https://github.com/pailakka/mtk2garmin/tree/master/mtk2garmin_style).

Do you have any idea what I might be doing wrong, or any pointers which 
way to look in mkgmap source is this happens to be some kind of bug in 
mkgmap?

Best regards,

Teemu Peltonen