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

Wed Dec 20 18:04:53 GMT 2017

Thanks Gerd for this.

This might be "sometimes mapsource displays parts of the map and relief
looks wrong. Unless i'm wrong.
Tried to send it to GPSMAP 62s, seems aok except on mapsource/basecamp

https://www.dropbox.com/s/y2vu5i9eahdo3df/dem-4008.jpg?dl=0

Ervin M.
*Schadow1 Expeditions* - A Filipino must not be a stranger to his own
motherland.
http://www.s1expeditions.com

On Thu, Dec 21, 2017 at 12:36 AM, Gerd Petermann <
gpetermann_muenchen at hotmail.com> wrote:

> Hi Henning,
>
> please try with r4008 which implements that and also interpolation of hgt
> values. There seems to be a major bug somewhere in the encoder, sometimes
> MapSource displays only
> parts of the map and relief looks wrong. I did not yet find out where
> exactly the problem is. I tried to compare the results from mkgmp with
> those from BuildDEMFile.
> It seems that mkgmap sometimes calculates different positions because of
> rounding differences. I tried to do most calculations with integers while
> BuildDEMFile uses doubles. Will try again tomorrow.
>
> Gerd
>
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von
> Henning Scholland <osm at hscholland.de>
> Gesendet: Mittwoch, 20. Dezember 2017 17:06:25
> An: mkgmap-dev at lists.mkgmap.org.uk
> Betreff: Re: [mkgmap-dev] r4006: 1st alpha version to write DEM data
>
> Hi Gerd,
> it's a great news. I wanted to try it on my map of China. But
> unfortunately failed because of missing files in the sea area between
> Korea and Japan. Maybe it's a good 1st approach to interpret a missing
> file as an area with 0 elevation.
>
> Anyway, thanks for all the research work on DEM!!!
>
> Bye,
> Henning
> _______________________________________________
> mkgmap-dev mailing list
> mkgmap-dev at lists.mkgmap.org.uk
> http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
> _______________________________________________
> mkgmap-dev mailing list
> mkgmap-dev at lists.mkgmap.org.uk
> http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.mkgmap.org.uk/pipermail/mkgmap-dev/attachments/20171221/2638b6d0/attachment.html>