[mkgmap-dev] naming map layers in a gmapsupp.img

Mon Dec 21 10:50:01 GMT 2009

On 12/21/2009 11:25 AM, charlie at cferrero.net wrote:

> Thanks for the info.  I currently generate each layer of my 3-layer  
> map using the --gmapsupp switch and then just combine the three  
> gmapsupp.img files.  Given your notes, it seems that this may be  
> wrong.  Instead I should only create the gmapsupp.img at the last  
> step.  Am I wrong to create "intermediate" gmapsupp.img files and then  
> combine them?

It's not wrong, it will work. But it is not necessary. Since the merge
of the mapset branch you can do it in one go, even combine pre-made .img
files (e.g. rarely changing contour layers) with newly created .img
files from .osm files.