[mkgmap-dev] Error in mkgmap r-3676, wrong preview generation

Tue Jun 28 14:49:14 BST 2016

Hi Steve,

just have tripped on similar problem. I have made a transparent map with 
layers 24-23 and preview map in layer 18. This went wrong, since tile's 
areas in preview (objects 4A) were split into parts. Mapsource and 
MapInstall expect single area for each object 4A.

I guess mkgmap takes background object 4B from img and convert it to 
tile's area 4A. Background can be split, probably mkgamp should merge 
all instances of background into single object 4A. Simplified solution 
could be to use map extent form TRE header instead but this won't work 
for irregular background.

-- 
Best regards,
Andrzej