Hi Gerd,

Same result as MapInstall (Basecamp). So yes - same family Id, description and so on - just a different filename. gmapsup1.img; gmapsup2.img and so on. MapInstall does the same if you send maps over 4GB to devices that can support several gmapsupp.img files.

It's pretty cumbersome to run a script to only include individual .img files up to 4GB for each run...

Essentially making it possible to create Europe continent map in gmapsupp.img format (several files) or Asia continent (or even whole world - but I guess no one will do so - except if cutting down data very strong).

Currently mkgmap just creates gmapsupp.img files over 4GB - they cannot be used by any garmin device due to FAT32 limits.

On Tue, 9 Jun 2020 at 08:06, Gerd Petermann <gpetermann_muenchen@hotmail.com> wrote:

Hi Felix,

sorry, I have no idea what the result of such a split should be. Two gmapsupp files with different content but equal family-id, description etc? Doesn't sound like a good idea to me. My understanding is that a map creator has to decide what part of the world should go into one gmapsupp.

Gerd

________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Felix Hartmann <extremecarver@gmail.com>
Gesendet: Montag, 8. Juni 2020 12:19
An: Development list for mkgmap
Betreff: [mkgmap-dev] Split gmapsupp.img files over 4GB

Could mkgmap automatically split gmapsupp.img over 4GB (or have an option to do so - but besides Oruxsmaps/locus and some other not often used tools - I don't know any others that can use larger gmapsupp.img files duet to FAT32).

It would be nice if those gmapsupp.img files were somehow rastered - but even just according to mapid would be fine.

--
Felix Hartman - Openmtbmap.org & VeloMap.org

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