[OSM-dev] OSM IDs order in osm.pbf files

Komяpa me at komzpa.net
Tue Apr 21 14:53:30 UTC 2015


No, they aren't.
1. records can go in any order, nodes / dense nodes blocks can mix;
2. IDs can go in any order;
3. relations can be circular in any direction.

If you want, you can ensure first two ones by prepeocessing input file with
something like osmconvert.

вт, 21 апр. 2015 г. в 17:29, François Battail <francois.battail at sipibox.fr>:

> Dear List,
>
> I'm developing an application like osm2pgsql but with a very different
> schema, I would like to know if I can assume the following things when
> parsing an osm.pbf file :
>
> 1. Records will always be in this order, that is:
>    - header,
>    - nodes,
>    - dense nodes,
>    - ways,
>    - relations.
>
> 2. OSM IDs are always in increasing order when parsing osm.pbf records
> forward.
>
> 3. A relation with ID x referencing another relation with ID y is such
> that x > y.
>
> Are these points safe to assume ?
>
> Thanks a lot, best regards.
>
> _______________________________________________
> dev mailing list
> dev at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/dev
>
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