On Fri, 23 Sep 2011 18:37:46 +0200, Igor Podolskiy wrote: Hello Igor,
>I must admit that I don't know anything about the mkgmap splitter (I >barely knew that it even exists ;)). I just looked at the sources and it >very well might be that the splitter's BinaryMapParser has the same bug. >The function parse(Osmformat.Headerblock) there [1] looks suspiciously >similar to what Osmosis did before the fix in OsmosisBinaryParser :) >IMHO there should be a check for hasBbox(), too... but as I said, I >might be looking at the wrong sources for all I know. Any mkgmap people >here? :) Oh, thanks for looking into it. I'll go back to the mkgmap list and report it there. >I can think of another reason why you might see those empty bounding >boxes in your data, though. If you have a file no-bb.osm.pbf without a >bounding box set and a following trivial osmosis pipeline: > >osmosis --read-pbf no-bb.osm.pbf --write-pbf x.osm.pbf > >then the following happens: the PBF reader reads the input file, emits a >spurious bounding box and passes it down the pipeline. The PBF writer >gets the bounding box from the pipeline and dutifully writes it into >x.osm.pbf since it doesn't know that the bounding box has been >spuriously generated by the PBF reader. Now you have an x.osm.pbf with a >proper bounding box explicitly set to 0,0,0,0. This bbox will of course >pop up in every PBF reader since it is actually written to the file. > >Is there any chance that the files in question have been generated by an >Osmosis pipeline which involves both reading and writing a pbf file >without a bbox? :) No, usually I am not reading pbf files with osmosis. I am just converting data from xml format to pbf in order to give it to the mkgmap splitter. The conversion back to xml was just a test to see if the problem I had with the splitter also occurs when I would read the pbj data with osmosis. And it did :) >Hope that helps Yes, thank you very much for your explanations. Michael _______________________________________________ osmosis-dev mailing list osmosis-dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/osmosis-dev
