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[mkgmap-dev] r4006: 1st alpha version to write DEM data

From Gerd Petermann gpetermann_muenchen at hotmail.com on Tue Dec 19 21:15:47 GMT 2017

Hi Frank,

okay, I'll have a closer look again at the demo maps. In the moment my code only works with one
resolution and I did not yet find out why :-(
When I use a different res MapSource shows only parts of the map while DemDisplay still says that all is good.
Hope I find out more tomorrow.


Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Frank Stinner <Frank.Stinner at kabelmail.de>
Gesendet: Dienstag, 19. Dezember 2017 21:53:06
An: mkgmap-dev at lists.mkgmap.org.uk
Betreff: Re: [mkgmap-dev] r4006: 1st alpha version to write DEM data

Hi Gerd,

my first idea was, 1 bit less for resolution means doubling the distance. Or in other words, then we use simply only every second point. But for me it
don't looks like good.

I use "levels=0:24, 1:23, 2:22, 3:21, 4:20, 5:19" and for --dlon 0.00027761, 0.00049, 0.00075, 0.00106, 0.0017 and 0.0025. The relations are rounded
1.8, 1.5, 1.4, 1.6, 1.5. With such relations we don't have an easy way to calculate one DEM level from another. I think, it's better to use ever the
original data for calculating and interpolating a level.


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