[mkgmap-dev] Splitter problem: losing a track segment

Sat May 30 13:15:19 BST 2015

Hi Gerd,

Overlap of 10000 fixed my problem. :-)

Thank you very much!

Alexandre

2015-05-30 8:20 GMT-03:00 Alexandre Loss <alexandre.loss at gmail.com>:

> Hi Gerd,
>
> Thanks for your answer.
> I'll try your suggestion and give you a feedback about the result.
>
> Regards,
>
> Alexandre
>
> 2015-05-30 5:43 GMT-03:00 Gerd Petermann <gpetermann_muenchen at hotmail.com>
> :
>
>> Hi Alexandre,
>>
>> I don't have much time to analyse your data today.
>> I think splitter assumes that the tile boundaries
>> are
>> "multiples of 0x200 map units wide and high"
>> when you use resolution=15.
>>
>> Since you use keep-complete=false you have to watch
>> the overlap value.
>> You can use a larger overlap value like 10000 to fix this problem.
>>
>> Gerd
>>
>>
>> ------------------------------
>> Date: Fri, 29 May 2015 22:04:34 -0300
>> From: alexandre.loss at gmail.com
>> To: mkgmap-dev at lists.mkgmap.org.uk
>> Subject: [mkgmap-dev] Splitter problem: losing a track segment
>>
>>
>> Hi guys,
>>
>> I'm facing a problem in one of my maps, that is probably might be
>> happening in other places where I didn't see yet.
>> The problem can be seen in the figure below taken from MapSource. There
>> is a gap in a track on the border of the tiles:
>>
>> [image: Imagem inline 2]
>>
>> So I started to analyze the problem step-by-step till find that the
>> problem was generated by Splitter (last version).
>>
>> To simplify your analysis, I edited my .osm file before running Splitter
>> and remove all objects (nodes, lines, poi, etc.) not related to the
>> problem, leaving only the line where the problem happens. The result was
>> the file "93352150-Ribeirao_Preto.osm" attached, containing only this:
>>
>> <?xml version="1.0" encoding="UTF-8"?>
>> <osm version="0.6" generator="TSuite 6.6.0.4">
>> <!-- === POLYLINE ROTEAVEL - INICIO: SP-255 DANIELLE
>> ======================== -->
>>  <node id="576" lat="-21.9388623" lon="-48.3347007" visible="true"
>> version="1"/>
>>  <node id="805" lat="-21.8877920" lon="-48.2932640" visible="true"
>> version="1"/>
>>  <node id="806" lat="-21.8674906" lon="-48.2767485" visible="true"
>> version="1"/>
>>  <node id="804" lat="-21.8661147" lon="-48.2756044" visible="true"
>> version="1"/>
>>  <way id="803" visible="true" version="1">
>>   <nd ref="576"/>
>>   <nd ref="805"/>
>>   <nd ref="806"/>
>>   <nd ref="804"/>
>>   <tag k="highway" v="trunk"/>
>>   <tag k="name" v="SP-255 DANIELLE"/>
>>   <tag k="ref" v="SP-255"/>
>>   <tag k="addr:city" v="BOA ESPERANÇA DO SUL"/>
>>   <tag k="addr:state" v="SP"/>
>>   <tag k="addr:country" v="Brasil"/>
>>  </way>
>> <!-- === POLYLINE ROTEAVEL - FIM: SP-255 DANIELLE
>> ======================== -->
>> </osm>
>>
>> Then I ran Splitter on this file and the result was the file
>> "93352150.osm" (attached and compacted), whose content are the lines bellow:
>>
>> <?xml version='1.0' encoding='UTF-8'?>
>> <osm version='0.5' generator='splitter' upload='false'>
>> <bounds minlat='-21.895751953125' minlon='-50.262451171875'
>> maxlat='-20.401611328125' maxlon='-47.548828125'/>
>> <node id='805' lat='-21.8877920' lon='-48.2932640'/>
>> <node id='806' lat='-21.8674906' lon='-48.2767485'/>
>> <node id='804' lat='-21.8661147' lon='-48.2756044'/>
>> <way id='803'>
>> <nd ref='576'/>
>> <nd ref='805'/>
>> <nd ref='806'/>
>> <nd ref='804'/>
>> <tag k='highway' v='trunk'/>
>> <tag k='name' v='SP-255 DANIELLE'/>
>> <tag k='ref' v='SP-255'/>
>> <tag k='addr:city' v='BOA ESPERANÇA DO SUL'/>
>> <tag k='addr:state' v='SP'/>
>> <tag k='addr:country' v='Brasil'/>
>> </way>
>> </osm>
>>
>> Note that in the "93352150.osm" file is missing the node 576 definition
>> (i.e.: <node id="576" lat="-21.9388623" lon="-48.3347007" visible="true"
>> version="1"/>).
>> And this is the cause of the lost segment.
>>
>> I'm running Splitter in the following way:
>>
>> java -jar splitter.jar --split-file=93352150-Ribeirao_Preto.list
>> --max-areas=1024 --mixed=true --keep-complete=false --resolution=15
>> --output=xml 93352150-Ribeirao_Preto.osm
>>
>> The above .list file is attached.
>>
>> If this is not a Splitter error, please, let me know what I'm doing wrong.
>>
>> Thanks.
>>
>> Alexandre
>>
>>
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