[OSM-talk] Proposed map feature: source tag

[Etienne]

Andy
Yes, a single element could be made up of data from many different sources.
I think my proposal covers that:

  <way>
    <tag k="highway" v="secondary"/>
    <tag k="ref" v="B2011"/>
    <tag k="source:ref" v="Out of copyright map,
      Ordnance Survey atlas of Great Britain, 1922"/>
    <tag k="name" v="Oxford Road"/>
    <tag k="source:name" v="dictaphone"/>
  </way>

This is an example of a street that was created from tracklogs, named from a
dictaphone recording, and the road number obtained from an out of copyright
map.  These elements could have been contributed by three different people
at different times.  Who did what when should be in the history.

Etienne


On 7/28/06, Andy Robinson <Andy_J_Robinson at blueyonder.co.uk> wrote:
>
> I'll support this approach, however it's a little restrictive if each
> element can only have one source key, you might think about that as to
> how,
> for instance, a person who creates the segment can provide one source and
> the next person who names it creates an additional source. You hint at a
> possible solution in the last entry on the wiki by making "source" a
> namespace. That would permit extension in many ways.
>
> Cheers
>
> Andy
>
> Andy Robinson
> Andy_J_Robinson at blueyonder.co.uk
>
> >-----Original Message-----
> >From: talk-bounces at openstreetmap.org [mailto:talk-
> >bounces at openstreetmap.org] On Behalf Of Etienne
> >Sent: 28 July 2006 13:35
> >To: OpenStreetMap talk list
> >Subject: [OSM-talk] Proposed map feature: source tag
> >
> >I'd like to draw attention to a proposed Map Features tag that I have
> just
> >put on the wiki.
> >
> >http://wiki.openstreetmap.org/index.php?title=Proposed_features/Source
> >
> >I think it deserves attention because it touches on a number of areas
> that
> >are quite important.
> >
> >Spam and vandalism.  If we find large amounts of mapping that des not
> have
> >supporting tracklogs and no other verifiable source then these can be
> >investigated.  The source tag allows users to justify their contributions
> >where they are not based on tracklogs.
> >
> >Verifiability.  A way with a source tag is potentially verifiable.  This
> >should increase users confidence in the data.
> >
> >Copyright.  Some data, such as street names, may come from sources that
> we
> >currently believe are not copyrighted, but may subsequently prove to be
> >copyrighted.  The source tag would enable infringing data from that to be
> >removed more easily.
> >
> >Namespaces.  Part of the proposal refers to yet another usage for the
> >namespacing of tags.  This might be a bit controversial, but is intended
> to
> >address the problem of different sources for different attributes.
> >
> >Comments, suggestions and alternative ideas are welcome, either here or
> on
> >the discussion page.
> >
> >
> >Etienne
> >
>
>
>
>
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