[OSM-talk] Survey points with different altitudes reported as "duplicate nodes"

[Konrad Skeri]

Without giving it much thought I think the last option is the best.
However, that still doesn't help against bots if they're not aware of
the 'ele'-tag.

Konrad


2010/3/21 Pieren <pieren3 at gmail.com>:
> Hi,
>
> In the recent days, someone in France imported tens of thousand survey
> points from the national mapping agency IGN (explicitely permitted).
> The problem is that many points exists physically at the same lat/lon but
> different height (e.g on a building, the point has to be visible for
> different points of views). The points have different descriptions,
> different references and different altitudes (in the tag 'ele'). But now
> they are reported as "duplicate nodes" on Matt's map:
> http://matt.dev.openstreetmap.org/dupe_nodes/?zoom=6&lat=47.16277&lon=1.74968&layers=BT
>
> So would be the best solution to fix this issue ? I see different options:
> - do nothing (with the risk that a bot will fix it incorrectly in the
> future)
> - remove arbitrarily one of the survey points but we loose some information
> - merge the points into one node and merge the tags using a separator
> (sounds ugly)
> - consider multiple nodes with different 'ele' as non-duplicate (and
> subsequently ask Matt's script to check it).
>
> Maybe they are other options. Any advise on this ?
>
> Pieren
>
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