[OSM-dev] Changeset discussions: dumps and replication

[Alex Barth]

Matt, this is awesome, thank you!

On Wednesday, February 25, 2015, Matt Amos <zerebubuth at gmail.com> wrote:

> at the recent Karlsruhe hack weekend [1] (thanks to Geofabrik for
> hosting), Paul Norman and i made some changes to changeset replication
> [2] and planet dumps [3] to support discussions.
>
> the first of the dumps is now available [4] as, for the moment, a
> separate file and the plan is to merge that back into the "main"
> changesets dump in about 6 months time - if you consume changeset
> dumps, please test your code against the discussions dump!
>
> the discussions dump is largely the same as the changesets dump, but
> includes the discussions like this:
>
>  <changeset id="1" created_at="2005-04-09T19:54:13Z"
> closed_at="2005-04-09T20:54:39Z" open="false" user="Steve" uid="1"
> min_lat="51.5288506" min_lon="-0.1465242" max_lat="51.5288620"
> max_lon="-0.1464925" num_changes="2" comments_count="1">
>   <discussion>
>    <comment uid="33757" user="Minh Nguyen" date="2014-11-15T11:43:09Z">
>     <text>From humble beginnings…</text>
>    </comment>
>   </discussion>
>  </changeset>
>
> which is the same format as the API (with comments included) [5].
> these are also present in the same format in the changeset replication
> feed [6], which allows you to keep a dump or replicated database up to
> date with the latest comments & changesets.
>
> i hope this will give everyone the data they need to build interesting
> new ways of visualising and interacting with the changeset comment
> data, for example; better UIs to display discussions near me or on the
> map, analysis tools to check for spam or other bad comments, and
> entirely new and unexpected cool things.
>
> cheers & happy hacking,
>
> matt
>
> [1]
> http://wiki.openstreetmap.org/wiki/Karlsruhe_Hack_Weekend_February_2015
> [2] https://github.com/openstreetmap/chef/pull/18
> [3] https://github.com/zerebubuth/planet-dump-ng/pull/10
> [4] http://planet.openstreetmap.org/planet/2015/discussions-150223.osm.bz2
> [5]
> http://api.openstreetmap.org/api/0.6/changeset/1?include_discussion=true
> [6] http://planet.openstreetmap.org/replication/changesets/
>
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