[mkgmap-dev] splitter removes multipolygon-tags

Sun May 11 10:15:29 BST 2014

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Hi Gerd,

the flexibility is, that I actually can just add new areas to my
areas.list and don't have to care about anything. If mkgmap throws out
a warning about too many nodes in a tile, I let splitter create a new
areas.list for the region and I can continue.

In the new workflow I then have to adjust the script, which copies the
multiple used tiles.

It would be very helpful, if splitter can do the copying of tiles.

Splitter detects overlapping areas in areas.list and handles these
regions as a own polygon and is writing tiles for each map, which
touches the overlapping area.

So for example, if a split a map of Hessen (10000000) and a map of
Germany (11000000), splitter will use a polygon of Germany with a hole
at the place where Hessen-poly-file has a coverage and Hessen-polygon.

So the resulting areas.list could looks like:

11000001;10000001: ....
11000002: ....

So splitter is able to write the data of a tile in Hessen to the map
of Hessen and to the map of Germany.

Maybe such a system is a better and more robust solution then handling
overlapping tiles. But I don't want to made you code that only for me.

Henning

Am 11.05.2014 10:49, schrieb Gerd Petermann:
> Hi Henning,
> 
> can you describe what flexibility you are loosing? Could splitter
> be improved ?
> 
> Gerd
> 
>> Date: Sun, 11 May 2014 10:46:31 +0200 From: osm at aighes.de To:
>> mkgmap-dev at lists.mkgmap.org.uk Subject: Re: [mkgmap-dev] splitter
>> removes multipolygon-tags
>> 
> Hi Gerd, this is, what I'm thinking about to do, but on the other
> hand I'm loosing the actual flexibility. I think I will give it a
> try and will see, how it works.
> 
> Henning
> 
> Am 11.05.2014 08:24, schrieb Gerd Petermann:
>>>> Hi Henning,
>>>> 
>>>> If you don't mind to have a map of e.g. Germany which also 
>>>> contains small parts of other areas, I think the fastest way
>>>> is this:
>>>> 
>>>> combine your *.poly files so that you have one henning.poly
>>>> that contains the areas for which you want to create maps.
>>>> Execute splitter with --polygon-file=henning.poly
>>>> --max-nodes=... --stop-after=split --write-kml=splitter.kml
>>>> planet.o5m
>>>> 
>>>> If you have an actual densitites_out.txt for planet, you can
>>>> also copy it to the working directory and rename it to
>>>> densities.txt. Splitter will use this file instead of reading
>>>> the planet.o5m, and the program finishes within seconds.
>>>> 
>>>> As a result you have a kml file and an areas.list. The next
>>>> step would be to re-combine the areas so that they build the
>>>> maps that you want to create.
>>>> 
>>>> If you need the same tile for two maps, but with different
>>>> mapids, I suggest to copy the output file of splitter. Maybe
>>>> a small script is needed to perform this step.
>>>> 
>>>> Gerd
>>>> 
>>>> 
>>>> 
>>>> 
>>>>> Date: Sat, 10 May 2014 20:31:51 +0200 From: osm at aighes.de
>>>>> To: mkgmap-dev at lists.mkgmap.org.uk Subject: Re:
>>>>> [mkgmap-dev] splitter removes multipolygon-tags
>>>>> 
>>>>> Hi Gerd, ok, so my next step will be to optimize my tiles.
>>>>> 
>>>>> Henning
>>>>> 
>>>>> Am 10.05.2014 17:27, schrieb GerdP:
>>>>>> Hi Henning,
>>>>>> 
>>>>>> I did not try what happens when 5 tiles overlap the same 
>>>>>> point, but it should work. As I said, you should try to
>>>>>> avoid that, as each tile will require the complete
>>>>>> reading of the input file.
>>>>>> 
>>>>>> Gerd
>>>>> 
>>>>> _______________________________________________ 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
>>>> 
>> 
>> _______________________________________________ mkgmap-dev
>> mailing list mkgmap-dev at lists.mkgmap.org.uk 
>> http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
> 
> 
> 
> 
> _______________________________________________ mkgmap-dev mailing
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