[mkgmap-dev] DEM file options do not work

Sun Aug 30 17:02:32 BST 2020

it's fine as long as you don't use empty maps. Just make a DEM contourlines
layer. Not an DEM layer and a contourlines layer.

On Sun, 30 Aug 2020 at 16:15, Carlos Dávila <carlos at alternativaslibres.org>
wrote:

> Hi Gerd
> Does it mean it is imperative DEM tiles have the same bounding box that
> tiles containing OSM data? I ask because I have recently tried building
> DEM img's with no OSM data (empty style) and then combining them with
> OSM tiles, in the same way I do with contour lines tiles, but MapSource
> crashes as soon as I click on "Show route profile" button. I would like
> to be able to reuse DEM tiles, so that it is not necessary to build them
> each time I update a map. This approach works fine for contour lines,
> but I didn't succeed for DEM.
> Regards,
> Carlos
>
> El 29/8/20 a las 7:48, Gerd Petermann escribió:
> > Hi Bernard,
> > AFAIK the only good solution is to have the DEM data in the tile that
> > contains the road data (NET,NOD). No idea why Garmin doesn't support
> > your approach.
> >
> > Ciao, Gerd
> >
> >
> >
> > ---- Bernard Mai schrieb ----
> >
> > Dear Joris and Gerd,
> >
> > thanks for your elaborate answers.
> >
> > I think I have figured it out. Main problem was my misunderstanding
> > where to put the dem-options. If I put them correctly into the batch
> > file which I use to generate the elevation .img files I get a nice
> > hillshading in Garmin Basecamp. Still missing is the possibility to
> > generate elevation profiles in Basecamp (using tracks generated in
> > Basecamp) and to see the "height" on any position using the
> > mousepointer. For this I have to puzzle harder or does somebody have
> > any idea?
> >
> > Here I include my working command line as it might be interesting for
> > the community. This results in a collection of .img files containing
> > elevation contour lines and hill shading:
> >
> > java -Xmx2000M -jar [...path to mkgmap ...]\mkgmap.jar
> > --show-profiles=1 --dem=[...path to hgt file folder ...]
> > --dem-interpolation=auto --dem-dists=3312,3312,13248,26512,53024
> > --style-file=[...path to mkgmap style...] --transparent
> > --draw-priority=20 --family-id=30 --mapname=90300001 [...path to
> > collection of splitted elevation data files ...]\9030*.osm.pbf
> >
> >
> > Regards,
> > Bernard
>
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>

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