[mkgmap-dev] Problem in splitter (Africa)
From GerdP gpetermann_muenchen at hotmail.com on Tue Jan 6 00:18:02 GMT 2015
Hi Stephen, the log shows no problems. Why do you think that max-nodes=400000 doesn't work? Do you see an error message in mkgmap? If yes, please provide your style files so that I can reproduce the problem. Maybe your style still adds one POI for each point of each highway? Gerd steve sgalowski wrote > canada splitter log file > as expected , looks like i was correct > the size of the split has to be smaller > stephen > > On Tue, Jan 6, 2015 at 7:25 AM, Carlos Dávila < > cdavilam@ > > > wrote: > >> Final file size depends on the amount of data in the input, not on the >> value of max-nodes. If you need a final img smaller than a given size you >> have to reduce the area covered by the input file or reduce the number of >> osm elements from the input that go into the map playing with your style >> files. >> >> El 05/01/15 a las 22:07, Steve Sgalowski escribió: >> >>> gerd and carlos >>> i am now running the splitter log file setup on my canada map >>> and see what it does , the end result on this map = 6.8 gb img file >>> wonder why some country can exceed and others not >>> stephen >>> >>> >>> On Tue, Jan 6, 2015 at 7:00 AM, Carlos Dávila < > cdavilam@ > >> <mailto: > cdavilam@ > >> wrote: >>> >>> Not sure what you mean. If you split a given country in a higher >>> number of tiles (lower max-nodes) final size will be the same or >>> slightly bigger, as there are more duplicated info due to overlap. >>> Or you are loosing some information in the process to reduce final >>> file size. >>> >>> El 05/01/15 a las 21:34, Steve Sgalowski escribió: >>> >>> in some of the countries i do , if i dont make the node count >>> small , the map size exceedds , size limit of 3 gb >>> then unshure how , canada has done this ok >>> >>> stephen >>> >>> >>> On Tue, Jan 6, 2015 at 5:24 AM, Gerd Petermann >>> < > gpetermann_muenchen@ > >> <mailto: > gpetermann_muenchen@ > > >>> <mailto: > gpetermann_muenchen@ > >> <mailto: > gpetermann_muenchen@ > >>> wrote: >>> >>> Hi all, >>> >>> I wonder what splitter should do in this case: >>> >>> Stephen uses paramter --max-nodes=80000 >>> and splitter reports >>> "Highest node count in a single grid element is 557,084" >>> >>> It is obvious that at least one tile will have much more >>> than the >>> requested 80.000 nodes, >>> on the other hand, the file africa.osm.pbf contains large >>> nearly >>> empty areas, >>> and that makes it very difficult to find a good split. >>> The current version r416 fails because it doesn't accept >>> tiles >>> with less than 5% of >>> the max-nodes value, so it searches for a solution where >>> every >>> tile has at least 4000 nodes, >>> and that might not exist. >>> >>> I see these options: >>> 1) splitter can continue trying to split the data, accepting >>> almost empty output files >>> (e.g. some with < 5 nodes and very high aspect ratios like >>> 32) >>> 2) if that fails, splitter can set the max-nodes value to >>> 557,084 >>> and try again >>> 3) or stop with an error message that tells the user that >>> it is >>> not possible >>> to split with the used resolution >>> 4) or restart using a higher resolution (15 would be >>> required >>> here instead of 13), >>> >>> @Stephen >>> What reason do you have to use such a small max-nodes value? >>> Would it be ok for you to use a higher one? >>> >>> Gerd >>> >>> >> _______________________________________________ >> mkgmap-dev mailing list >> > mkgmap-dev at .org >> http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev >> > > _______________________________________________ > mkgmap-dev mailing list > mkgmap-dev at .org > http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev > > splitter.log (356K) > <http://gis.19327.n5.nabble.com/attachment/5829156/0/splitter.log> -- View this message in context: http://gis.19327.n5.nabble.com/Problem-in-splitter-Africa-tp5829130p5829158.html Sent from the Mkgmap Development mailing list archive at Nabble.com.
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