[mkgmap-dev] DEM Noddy Guide

Tue Jan 9 08:57:49 GMT 2018

Hi Gerd

I'm merely questioning the phrasing of the message -, ie it wasn't the 
pdf that was causing the problem as the msg implied.

Nick

On 09/01/2018 08:51, Gerd Petermann wrote:
> Hi Nick,
>
> I cannot reproduce that message without using a wrong option like
> dem=path1,,path2
> (extra comma)
>
> Anyhow, I try to improve the message.
>
> Gerd
>
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von osm at pinns <osm at pinns.co.uk>
> Gesendet: Dienstag, 9. Januar 2018 09:40:23
> An: mkgmap-dev at lists.mkgmap.org.uk
> Betreff: Re: [mkgmap-dev] DEM Noddy Guide
>
> Hi Gerd
>
> I used
>
> dem=e:\dem\europe\
> overview-dem-dist=88888
> dem-dists=3312,13248,26512,53024
> dem-poly=F:\garmin\ukraine\areas.poly
>
> when I added the required .hgt files it worked OK
>
>
> On 09/01/2018 08:20, Gerd Petermann wrote:
>
> On 09/01/2018 08:20, Gerd Petermann wrote:
>> Hi Nick,
>>
>> I think this message may appear if you have blanks in the option --dem. What exactly do you use?
>>
>> Gerd
>>
>> ________________________________________
>> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von osm at pinns <osm at pinns.co.uk>
>> Gesendet: Dienstag, 9. Januar 2018 09:14:14
>> An: mkgmap-dev at lists.mkgmap.org.uk
>> Betreff: Re: [mkgmap-dev] DEM Noddy Guide
>>
>> Hi Gerd,
>>
>> Just come across a misleading error message:
>>
>> SEVERE (HGTReader): F:\garmin\maps\ukraine\12345700.osm.pbf:
>>     does not exist
>> Number of MapFailedExceptions: 0
>> Number of ExitExceptions: 0
>>
>> The pbf existed, as it produced the map with out DEM !
>>
>> However,some of the .hgt files were missing which caused the error.
>>
>> Just a minor point
>>
>> r
>>
>> Nick
>>
>>
>>
>>
>> On 09/01/2018 06:09, Gerd Petermann wrote:
>>> Hi all,
>>>
>>> I did not note this before, but there is probably a typo in this description:
>>> overview-dem-dist=888888 is far too high, I assume Arndt meant 88888.
>>>
>>> Besides that I think there is need to use --dem-poly in combination with the poly file created by splitter.
>>> This poly file just describes the outer boundaries of the tiles, and mkgmap calculates this polygon anyway.
>>> The --dem-poly can be used with the rather complex *.poly files from geofabrik. I've tested with bolivia.poly which has 1176 nodes
>>> and the additional tests for the polygon bounds did not take long. Still, you may want to draw your own simpler poly files because those from
>>> geofabrik are rather close to country borders.
>>>
>>> Gerd
>>>
>>> ________________________________________
>>> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Arndt Röhrig <arndt at speichenkarte.de>
>>> Gesendet: Freitag, 5. Januar 2018 21:41:57
>>> An: Development list for mkgmap
>>> Betreff: Re: [mkgmap-dev] DEM Noddy Guide
>>>
>>> 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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