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[mkgmap-dev] Maps with contours shows two maps in some devices (i.e. Zumo XT)

From Enrico Liboni eliboni at gmail.com on Tue Jun 9 23:14:01 BST 2020

@Gerd - it worked well, i.e. two map sets are in. I believe the advantage
is on performance since once you processed the img contours once, you can
reuse. Plus, on my old Nuvi it allowed to just use the contour as a
transparent layer on other maps as well. However, it may not be a standard
way to build a map... I'll try your suggestion, thanks.

*From* Gerd Petermann gpetermann_muenchen at hotmail.com
*on* *Mon Jun 8 10:14:13 BST 2020*

Hi Enrico,

no idea if a single gmapsupp.img can contain two map sets with
different family ids and multiple typ files.
Is it important for you that you have the contours in a different map
set? If not, I would merge the osm data and the contour data first,
use splitter on the merged data to have a single map containing osm
data and contours. That's how I create my own maps.
The only problem that you have to take care of is that the contour
data must not contain ids which overlap the OSM ids.

I just noticed that my file Hoehendaten_Freizeitkarte_EUROPE.osm.pbf
contains node ids starting with 7.500.000.000, so I have to create or
download a new file now.


On Mon, Jun 8, 2020 at 10:22 AM Enrico Liboni <eliboni at gmail.com> wrote:

> Hi there.
> I create my maps with contours using the following command
> java -jar ./mkgmap/mkgmap.jar  --description="*$family_name - OSM*"
> --output-dir="$dest"/ \
>  --family-id=10030 --product-id=1  --family-name="*$family_name - Map*"
>  --route --remove-short-arcs  --bounds=bounds.zip \
>  --precomp-sea=sea.zip  --location-autofill=is_in,nearest
> --draw-priority=20  --gmapsupp  --index --housenumbers
>  "$work"/"$suffix"*osm.pbf  ./typ/gspeed.typ    \
>  --family-id=10031 --product-id=1  --family-name="*$family_name -
> Contours*" --draw-priority=10000  --transparent   $contours
> ./typ/gspeedContours.typ
> In blue the part that refers to contours. Mapids for the two sets are
> different.
> On my Garmin Montana I see just one map with the name passed in
> --description option (*$family_name - OSM*).
> On an old Garmin Nuvi I see two maps, the real map with streets (named *$family_name
> - Map*) and the one with contours (named *$family_name - Contours*),
> which I can enable/disable individually.
> On the new Garmin Zumo XT I see two maps, both named *$family_name - OSM.
> *I can't disable just one of the two, they seems to be linked and it is
> weirs they show up with very same name in the list.
> Question: is there a way I can merge the two maps so I get the same
> behaviour anywhere?
> Thanks!
> Enrico
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