Hi,
Frank, thanks for your work. Your analysis of DEM headers looks good to
me, I have done similar task for gmaptool. Yours is of course more
detailed. I haven't looked at your program yet, but I hope it can create
usable data.
Gerd, there are 2 flags in TDB. One is for DEM, other for using contours
for calculating height profiles. See file tdbfmt/HeaderBlock.java, you
already have both in code. I think the meaning of these flags in mkgmap
is swapped, but I could be wrong.
When adding DEM to a tile, area of DEM can probably be bigger than tile,
I have seen some examples, when people were using DEM from Garmin maps
that way. DEM subfile can't have more layers than TRE but I think less
layers should work.
When creating a map with DEM for PC, overview map should include DEM
too. This could be a DEM with empty data, gmaptool can create that kind
of DEM.
--
Best regards,
Andrzej
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