Peter Körner wrote:
Theoretically, my meridian gap could be caused by osmosis, by osm2pgsq, or by any of their underlying libraries. My gut feeling though is that it's caused by a rounding error in osmosis or by an accuracy error in its underlying routines.
Can't you check this by looking at the resulting .osm files?
For the Manaus example, the .osm files say <?xml version='1.0' encoding='UTF-8'?> <osm version="0.6" generator="Osmosis 0.36"> <bound box="-90.00000,-77.00000,0.00000,-76.00000" origin="http://www.openstreetmap.org/api/0.6"/> and <bound box="-90.00000,-78.00000,0.00000,-77.00000" origin="http://www.openstreetmap.org/api/0.6"/> respectively. However, grep 'lon="-77' S-77--76.osm <node id="249411355" version="1" timestamp="2008-02-26T19:17:30Z" uid="308" user="MichaelCollinson" changeset="209621" lat="-1.333333" lon="-77"> <node id="249411565" version="1" timestamp="2008-02-26T19:17:40Z" uid="308" user="MichaelCollinson" changeset="209621" lat="-2" lon="-77"> <node id="249420393" version="4" timestamp="2010-05-28T09:38:41Z" uid="77114" user="LLAQWA" changeset="4829133" lat="-1.916667" lon="-77"> <node id="249598742" version="1" timestamp="2008-02-28T19:43:08Z" uid="308" user="MichaelCollinson" changeset="223447" lat="-0.333333" lon="-77"> <node id="414231264" version="1" timestamp="2009-06-01T21:09:15Z" uid="113186" user="Peru ruteable" changeset="1398408" lat="-12.12796" lon="-77"/> grep 'lon="-77"' S-78--77.osm returns nothing. Hence, it's not osm2pgsql that ate up the missing parts. Still, this is now weirder than before. If osmosis is selecting everything inside the bounding box including the box itself, there should be thousands of nodes here. And if osmosis is selecting everything inside the bounding box but not the box itself, there should be nothing. Those five nodes above don't fit either theory. I put the .osm files at www.xs4all.nl/~oracle/S-77--76.osm.bz2 and www.xs4all.nl/~oracle/S-78--77.osm.bz2 anyway. They were extracted from the 100825 planet file. Z _______________________________________________ osmosis-dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/osmosis-dev
