Hi Andy, seems this option is not documented yet. Try --x-mapset-name for now. I'll try to find a documentation later. Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Andy Townsend <ajt1047@gmail.com> Gesendet: Sonntag, 17. März 2019 13:01 An: Development list for mkgmap Betreff: [mkgmap-dev] Setting mapset-name? Hello, I'm in the process of moving some functionality from an old .osm processor into a mkgmap style, and I'd like to have both old and new styles on the device (a gpsmap64s) at the same time for comparison. Before I even got that far I couldn't find a way of changing the mapset name that is produced. The script I'm using is https://github.com/SomeoneElseOSM/mkgmap_style_ajt/blob/master/garmin_map_et... (be aware that that currently has some hardcoded paths in it). so I'm using "--gmapsupp" to create a ".img" file that I can copy to the device. ".../mkgmap/trunk/src/uk/me/parabola/mkgmap/combiners/GmapsuppBuilder.java" contains the default name of "OSM Map Set", and if I change the default there it does change the value I can see in the .img file. Despite that bit of code appearing to be reading an argument from somewhere, setting "--mapset name=" doesn't seem to work - mkgmap exits with "Invalid option: 'mapset-name'". Is there perhaps some order in which the arguments need to be applied? I've got one lot of input files (6*.osm.gz from splitter) some intermediate output files (6*.img) and then the final output from the --gmapsupp - gmapsupp.img, so it's not exactly clear what order would make sense. Best Regards, Andy