[OSM-dev] CloudMade OSM download problems

[Brett Henderson]

Yep, the merge task ;-)

The full set of tasks are defined here:
http://wiki.openstreetmap.org/wiki/Osmosis/DetailedUsage

To merge two files it's something like:
osmosis --rx file2.osm --rx file1.osm --merge --wx merged-file.osm

The merge task has a conflictResolutionMethod but the default value 
should be fine for your purposes.

Mikel Maron wrote:
> Great! That works.
>
> Another osmosis question .. is there any way to merge two osm files? I 
> now have an osm for Pakistan and California, and I want to load both. 
> However there is a warning about duplicate key constraint violation .. 
> somehow both Pakistan and California share a node.
>
> -Mikel
>
> ------------------------------------------------------------------------
> *From:* Brett Henderson <brett at bretth.com>
> *To:* Mikel Maron <mikel_maron at yahoo.com>
> *Cc:* Shaun McDonald <shaun at shaunmcdonald.me.uk>; dev at openstreetmap.org
> *Sent:* Thursday, July 30, 2009 5:55:06 PM
> *Subject:* Re: [OSM-dev] CloudMade OSM download problems
>
> Importing into an OSM instance is always problematic due to the 
> foreign key relationships.  They're a good idea in the central 
> database, but difficult to satisfy when working offline with extracts 
> and changesets.
>
> OPTION 1
> If you're just trying to import a one off extract into the database 
> you can use osmosis to fix the referential integrity problems.
> osmosis --rx myfile.osm.gz --bbox clipIncompleteEntities=true --wx 
> myfixedfile.osm.gz
>
> That should modify ways to only refer to nodes that actually exist.  
> No coordinates have been passed to the bbox task so it will select the 
> entire planet (or in this case, the entire input file).  Note that 
> modified ways will no longer match the main API ways exactly so they 
> should never be uploaded back to the main database.
>
> OPTION 2
> If you wish to apply changesets to your database to keep it up to date 
> you'll probably need to drop the problematic foreign key relationships.
>
> Brett
>
> Mikel Maron wrote:
>> Trying to import into psql for an OSM dev instance. Using osmosis.
>>
>> ------------------------------------------------------------------------
>> *From:* Shaun McDonald <shaun at shaunmcdonald.me.uk>
>> *To:* Mikel Maron <mikel_maron at yahoo.com>
>> *Cc:* dev at openstreetmap.org
>> *Sent:* Thursday, July 30, 2009 4:30:22 PM
>> *Subject:* Re: [OSM-dev] CloudMade OSM download problems
>>
>> What are you trying to import the extracts into?
>>
>> Shaun
>>
>> On 30 Jul 2009, at 20:47, Mikel Maron wrote:
>>
>>> Hi
>>>
>>> Anyone else have issues with the latest .OSM extracts from CloudMade?
>>>
>>> I've tried importing Pakistan and California locally, and both files 
>>> have references to nodes that aren't present.
>>>
>>> Fortunately GeoFabrik has a Pakistan extract that works. If anyone 
>>> can help with a California extract, that would be super.
>>>
>>> -Mikel
>>> _______________________________________________
>>> dev mailing list
>>> dev at openstreetmap.org <mailto:dev at openstreetmap.org>
>>> http://lists.openstreetmap.org/listinfo/dev
>>
>> ------------------------------------------------------------------------
>>
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>>   
>

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