[OSM-dev] Problem with duplicate keys

Adrian Chapela achapela.rexistros at gmail.com
Thu Aug 11 07:38:45 BST 2011

> It's worth a try. But you might encounter problems as well. Theoretically there could be relations which appear in both files, e.g. ferry lines, submarine cables...
> There is an alternative way to merge two files:
> http://wiki.openstreetmap.org/wiki/Osmconvert#Merging_two_or_more_Geographical_Areas
> Nevertheless be careful. This will probably work with files from geofabrik.de because they use a clipping algorithm which does not drop unused references. But you might be out of luck with extracts from other sources. OK, this usually doesn't matter for the example Central America / Russia.
> The best way really is to extract the chosen areas from a larger file - as Peter said.

Ok, so I could extract my areas from a planet.osm with osmosis  but how
could I extract from planet osm Dominican Republic and Russia ? and then
how could I apply diffs ? Now I am downloading the extracts from the
countries and then I am getting differences with osmosis to finally
apply with osm2pgsql. Could I do the same applying planet diffs to a
extract ? I am not sure about that.


> Markus
> -------- Original-Nachricht --------
>> Datum: Wed, 10 Aug 2011 12:32:37 +0200
>> Von: "Peter Körner" <osm-lists at mazdermind.de>
>> An: Adrian Chapela <achapela.rexistros at gmail.com>
>> CC: dev at openstreetmap.org
>> Betreff: Re: [OSM-dev] Problem with duplicate keys
>> Am 10.08.2011 12:29, schrieb Adrian Chapela:
>>>> Better take the central-america.osm.pbf and, if 100M is to big,
>>>> extract your area of interest from it.
>>> Ok. Where Could I find this extract ?
>> http://download.geofabrik.de/osm/
>>> Another thing is that I will be importing Russia as well... but I think
>>> that I could import Central America and then import Russia without any
>>> problem because it shouldn't be any duplicate entry in both files.
>> You may have luck with that.
>> Peter
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