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[mkgmap-dev] Behavior of overview options

From Carlos Dávila carlos at alternativaslibres.org on Wed Mar 31 14:18:29 BST 2021

According to options file,  --overview-mapname and --overview-mapnumber 
parameters should only have an effect "If --tdbfile is enabled...", but 
they seem to be always taken into account regardless of --tdbfile, as 
can be checked with command: java -jar mkgmap.jar --gmapsupp 
--overview-mapname=test --overview-mapnumber=0000001 test.osm

Additionally, overview files (osmmap.img, osmmap.tdb and ovm_XXX.img) 
are created when only --gmapsupp is passed to mkgmap (no --tdb-file), as 
in the command below:

java -jar mkgmap.jar --gmapsupp test.osm

I think if you just want to create a gmapsupp file, overview files are 
not needed at all and they should not be created.






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