[OSM-dev] Filename extensions for OSM files
Peter Körner
osm-lists at mazdermind.de
Wed May 11 12:23:39 BST 2011
Am 11.05.2011 13:17, schrieb Matt Amos:
>> We should probably introduce an attribute on the<osm> tag that says that
>> this is a history file. Just as we are currently discussing for the PBF
>> version.
>
> while we're at it, let's have a flag to indicate if the elements are
> sorted by ID, how many prime-numbered elements there are, whether
> there was a full moon when it was generated and what the colour of the
> file is. i'm up for all of that as long as it's blue.
history files have similar syntax as normal osm files, but very
different semantics. A program processing a history file needs to be
aware or it
- having multiple objects with the same id
- having objects that stop being existent in some point in time
- that have an extra information attached
that way it is useful for a program to know, if a file fed into it via
stdin will be processed fine right from the start. nobody likes
processes that fail after 10 hours because of a missing
--this-is-an-history-file flag.
Peter
More information about the dev
mailing list