[mkgmap-dev] DEM/Contourlines causing grey (empty) squares at the border of maps

Mon Apr 30 16:19:37 BST 2018

But Europe continent map seems to be broken too... so it's not that
simple... I really don't know why alps is working and switzerland broken.
I'll try if the broken maps work if I exclude viewfinderpanoramas 1" data
and only use 3" data.

On 30 April 2018 at 15:22, Felix Hartmann <extremecarver at gmail.com> wrote:

> I'm not fully sure it's because of the poly file - but it's clearly not
> based on wrong/broken input data. I created the Alps and Switzerland
> equally, and all of Switzerland is part of the Alps map too. Alps work,
> Switzerland does not. Strangely though changing the style-file a little -
> it may mean a map does not have the problem - so I think it's maybe only
> partly related to the poly file?
>
> On 30 April 2018 at 15:04, Felix Hartmann <extremecarver at gmail.com> wrote:
>
>> Hi Gerd - can you find a pattern here?
>> Folllowing are the polygons of 10 broken (out of a sample of 94 rather
>> "small" countries) poly files.
>> https://openmtbmap.orgbroken_contours.zip
>>
>> it's
>> Germany, Bavaria, Czech, Finland, Niedersachsen, Nord-Rhein-Westfalen,
>> Poland, Paraguay, Romania
>> Switzerland, Sweden
>>
>> The remaining 84 countries work fine in Basecamp (leaves about 60
>> countries which are usually pretty big and I did not care to check as it
>> means zooming in to 30km, sometimes 50km and pan around all borders of the
>> map in Basecamp to spot if it's working or not).
>>
>> On 27 April 2018 at 09:27, Gerd Petermann <gpetermann_muenchen at hotmail.c
>> om> wrote:
>>
>>> Hi Felix,
>>>
>>> a convex polygons doesn't seem to solve it. I tried with the attached
>>> and still see those problems :-(
>>>
>>> Gerd
>>>
>>> ________________________________________
>>> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von
>>> Gerd Petermann <gpetermann_muenchen at hotmail.com>
>>> Gesendet: Freitag, 27. April 2018 08:53:28
>>> An: Development list for mkgmap
>>> Betreff: Re: [mkgmap-dev] DEM/Contourlines causing grey (empty) squares
>>> at the border of maps
>>>
>>> Hi Felix,
>>>
>>> I think it is the shape of the poly that matters. Triangular shapes seem
>>> to be problematic. Pattern in DEM would be something like
>>> UUUUUUUUUUUUU
>>> UUUUUUVUUUUUU
>>> UUUUUVVUUUUUU
>>> UUUUVVVUUUUUU
>>> UUUVVVVVUUUUU
>>> with U for undefined and V for knwon height.
>>>
>>> If you use the (rectilinear) area.poly created by splitter when
>>> splitting the geofabrik OSM files you will not see this pattern as often.
>>> Maybe it would be enough to change the poly so that it is convex, not
>>> concave:
>>> https://en.wikipedia.org/wiki/Concave_polygon
>>>
>>> And yes, I can confirm the missing altitude values with gray squares.
>>>
>>> Gerd
>>>
>>> ________________________________________
>>> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von
>>> Felix Hartmann <extremecarver at gmail.com>
>>> Gesendet: Freitag, 27. April 2018 08:42:52
>>> An: Development list for mkgmap
>>> Betreff: Re: [mkgmap-dev] DEM/Contourlines causing grey (empty) squares
>>> at the border of maps
>>>
>>> I guess if the poly is a bit bigger - it would not happen? Could you try
>>> by enlarging the poly 2km to the outside? Not using a poly at all would be
>>> really big or am I wrong? Which normal poly do you mean? The area.poly
>>> created while splitting the geofabrik osm files? Or the area.poly created
>>> while splitting the phyghtmap osm.pbf contourlines file?
>>>
>>> I also noticed that while any of that grey square is visible in Basecamp
>>> - Basecamp does not show altitude in the lower left corner anymore.
>>>
>>> On 27 April 2018 at 07:40, Gerd Petermann <gpetermann_muenchen at hotmail.c
>>> om<mailto:gpetermann_muenchen at hotmail.com>> wrote:
>>> Hi Felix,
>>>
>>> hmm, yes, that really looks bad. At the moment I only have work-arounds:
>>> 1) Add additional DEM layers so that the error only shows up in smaller
>>> rectangles.
>>> 2) Don't use --dem-poly, I think this causes the trouble. Or maybe try
>>> the poly file created for the normal tiles.
>>>
>>> I guess that the encoder still doesn't work 100% correctly, but I have
>>> no idea how to fix that and Frank Stinner seems to have stopped his work on
>>> https://github.com/FSofTlpz/Garmin-DEM-Build
>>>
>>> Gerd
>>>
>>> ________________________________________
>>> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk<mailto:
>>> mkgmap-dev-bounces at lists.mkgmap.org.uk>> im Auftrag von Gerd Petermann <
>>> gpetermann_muenchen at hotmail.com<mailto:gpetermann_muenchen at hotmail.com>>
>>> Gesendet: Donnerstag, 26. April 2018 20:53:21
>>> An: Development list for mkgmap
>>> Betreff: Re: [mkgmap-dev] DEM/Contourlines causing grey (empty) squares
>>> at      the border of maps
>>>
>>> Hi Felix,
>>>
>>> I'll have a closer look tomorrow. IIRC this also happens with Garmin
>>> maps.
>>>
>>> Gerd
>>>
>>> ________________________________________
>>> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk<mailto:
>>> mkgmap-dev-bounces at lists.mkgmap.org.uk>> im Auftrag von Felix Hartmann <
>>> extremecarver at gmail.com<mailto:extremecarver at gmail.com>>
>>> Gesendet: Donnerstag, 26. April 2018 20:23:11
>>> An: Development list for mkgmap
>>> Betreff: Re: [mkgmap-dev] DEM/Contourlines causing grey (empty) squares
>>> at      the border of maps
>>>
>>> well maybe it's more common - like in 1/5 maps if the include 1" DEM
>>> data - only happens if map includes DEM.
>>>
>>> On 26 April 2018 at 20:20, Felix Hartmann <extremecarver at gmail.com<mailt
>>> o:extremecarver at gmail.com><mailto:extremecarver at gmail.com<mailto:
>>> extremecarver at gmail.com>>> wrote:
>>> In some cases at the borders of maps - there appear grey rectangles in
>>> Basecamp and Mapsource (well do not mind Mapsource much - it's very
>>> outdated) - this only appears if using a DEM/contourline overview...
>>>
>>> Sorry as Basecamp is windows only - only windows installer/Mac OSX gmap
>>> file here:
>>> https://openmtbmap.org/mtbbayern.exe
>>> or
>>> https://openmtbmap.org/mtbbayern_macosx.7z
>>>
>>> Without contourlines the map works fine (mapsetx.tdb...)
>>> Contourlines map alone also does not work (mapsetz.tdb...)
>>>
>>>
>>> So the bug is clearly in the transparent DEM/contourlines map. Sometimes
>>> simply rendering the contourlines map again and the bug is gone...
>>>
>>>
>>> Seems to be not that common but also not that rare (maybe in 1 out of 20
>>> maps)
>>>
>>> --
>>> Felix Hartman - Openmtbmap.org & VeloMap.org
>>> Schusterbergweg 32/8
>>> 6020 Innsbruck
>>> Austria - Österreich
>>>
>>>
>>>
>>> --
>>> Felix Hartman - Openmtbmap.org & VeloMap.org
>>> Schusterbergweg 32/8
>>> 6020 Innsbruck
>>> Austria - Österreich
>>> _______________________________________________
>>> mkgmap-dev mailing list
>>> mkgmap-dev at lists.mkgmap.org.uk<mailto: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<mailto:mkgmap-dev at lists.mkgmap.org.uk>
>>> http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
>>>
>>>
>>>
>>> --
>>> Felix Hartman - Openmtbmap.org & VeloMap.org
>>> Schusterbergweg 32/8
>>> 6020 Innsbruck
>>> Austria - Österreich
>>> _______________________________________________
>>> 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
>>>
>>
>>
>>
>> --
>> Felix Hartman - Openmtbmap.org & VeloMap.org
>> Schusterbergweg 32/8
>> 6020 Innsbruck
>> Austria - Österreich
>>
>
>
>
> --
> Felix Hartman - Openmtbmap.org & VeloMap.org
> Schusterbergweg 32/8
> 6020 Innsbruck
> Austria - Österreich
>

-- 
Felix Hartman - Openmtbmap.org & VeloMap.org
Schusterbergweg 32/8
6020 Innsbruck
Austria - Österreich
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.mkgmap.org.uk/pipermail/mkgmap-dev/attachments/20180430/587c994c/attachment.html>