Hi Mike,

it´s simple:

- Download hgt files )*

- give mkgmap the option x-dem=path to the hgt files

- x-dem-dists=3314,4000,6000,8000,10000,15000 (maybe other values are better)

1 value for each level (options file: exampel levels = 0:24, 1:23, 2:22, 3:21, 4:20, 5:19)

- x-overview-dem-dist=888888 writes DEM to the overviewmap (maybe other value is better)

- x-dem-poly=path to a poly file  for example areas.poly from splitter result. 

That´s all.

)* hgt files are downloadable here: http://www.viewfinderpanoramas.org/dem3.html

I use phyghtmap to create SRTM contourlines as .pbf. the program download hgt files from viewfinderpanoramas to build the pbfs. After that you find a folder hgt on your pc with hgt files inside.

http://katze.tfiu.de/projects/phyghtmap/

Greetings

Arndt

Mike Baggaley hat am 5. Januar 2018 um 21:19 geschrieben:


Hi all,

I've been following the discussions of DEM with interest, but have so far
not attempted to create a map including this. Is there a guide to the steps
involved in producing the DEM data? I have contour data in OSM format - is
there a simple way to get this into a suitable input format (or is there a
specification of the input format available, so I can knock up something to
convert it)? I'm assuming that the height data contains the same information
as contour data but in a different format.

Thanks,
Mike

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