[mkgmap-dev] DEM data from gmapsuppp not showing on BaseCamp

Wed Jan 4 21:04:05 GMT 2023

Hi Gerd

Thanks for your reply. I had already tried using the same split file, 
but it didn't work. I think it isn't worth generating DEM data each time 
a map is updated, given gmap version of all maps is also available in my 
site if anyone wants to have DEM in BaseCamp.

Carlos

El 3/1/23 a las 7:40, Gerd Petermann escribió:
> Hi Carlos,
>
> I don't know the exact reason for the problem. I guess Garmin software needs DEM tiles with the same layout,
> but maybe only one corner has to match.
> I think the only solution is to use the same split file as long as possible so that you can reuse the precompiled DEM tiles.
> If mkgmap fails to render a tile because it has too much data you would split that specific tile into smaller pieces,
> modify the global split file to contain the new tiles and render the needed DEM tiles.
> Quite some work to do when this should happen automatically with scripts.
>
> Gerd
>
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Carlos Dávila <carlos at alternativaslibres.org>
> Gesendet: Montag, 2. Januar 2023 18:45
> An: Development list for mkgmap
> Betreff: [mkgmap-dev] DEM data from gmapsuppp not showing on BaseCamp
>
> Happy New Year to all!
>
> One user of my maps has reported that when he loads a gmapsupp with DEM
> in BaseCamp, it doesn't show shaded relief, while if he loads gmap
> version of the same map it does. I have confirmed the issue with a
> couple of maps and also that BaseCamp reads height information from
> gmapsupp, as it is displayed in the status bar along with coordinates.
> gmap version of the same maps does show both shaded relief and height
> info at all zoom levels.
>
> My DEM maps are generated with options below, just combining precompiled
> map data (51*.img) and DEM data (63*.img) tiles.
>
> gmapi command: java -ea -Xmx27G -jar mkgmap.jar --dem=hgt/ALOS
> --dem-poly=polygons/$mapa.poly --overview-dem-dist=128000
> --gmapi-minimal${GMAPI_MINIMAL} --show-profiles=1
> --road-name-config=${CONFIG} tmp/51${FID}*.img curvas/63${FID}*.img
> tmp/${ABR}5${FID}.txt
>
> gmapsupp command: java -Xmx27G -ea -jar mkgmap.jar --gmapsupp
> --road-name-config=${CONFIG} --route tmp/51${FID}*.img
> curvas/63${FID}*.img tmp/${ABR}5${FID}.typ --description="OSM $MAPA DEM"
> --no-tdbfile
>
> I then tried splitting map data with the same areas.list used to
> generate DEM tiles, so that both groups of tiles share the same bounding
> box, but it didn't work either. Only if map and DEM data are all
> compiled in the same run of mkgmap, gmapsupp shows shaded relief in
> BaseCamp.
>
> Does anybody know a way to get shaded relief from gmapsupp when using
> precompiled tiles?
>
>
>
> _______________________________________________
> mkgmap-dev mailing list
> mkgmap-dev at lists.mkgmap.org.uk
> https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
> _______________________________________________
> mkgmap-dev mailing list
> mkgmap-dev at lists.mkgmap.org.uk
> https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev