[HOT] Tracing the clan boundaries in Liberia

Andrew Buck andrew.r.buck at gmail.com
Sat Nov 22 13:59:47 UTC 2014

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I am not sure this is worth doing, at least not manually.  GIS
software can draw enclosing polygons around the common clan entries
and then these could be used to the same effect, with a lot less
manual work.

However in any case, I think we need to ask if deriving them this way
is the best way to go anyway.  The data likely already exists
somewhere, so our efforts may be better spent trying to free that data
than trying to recreate a rough copy of it.

- -AndrewBuck

On 11/22/2014 07:39 AM, Rafael Avila Coya wrote:
> Hi all:
> I was doing some testing on manually tracing the clan boundaries
> of Liberia from the UNMIL places data. That data includes, for the
> huge majority of the 14,020 nodes, the clan each place belongs to,
> and also the district and county.
> There are 15 counties, divided in a total of 90 districts, and it 
> seems all of those boundaries are already in OSM (correct me if I
> am wrong).
> I would suggest to do this by one or two people, with experience
> in making boundaries. We should agree in a tagging schema, to
> avoid inconsistencies (it would be mainly for the source tag).
> Needless to say, I offer myself on doing this.
> To speed up the thing, here is my proposal for the tagging:
> Segments:
> boundary=administrative admin_level=8 source=estimate (or something
> similar)
> Maybe source:description=Data derivated from the UNMIL place nodes
> Relations:
> type=boundary boundary=administrative name=* admin_level=8 
> source=UNMIL source:description=Data derivated from the UNMIL place
> nodes
> We would include the admin_centre of all clans (when easily
> guessed) as member of each relation, adding to it the capital=8
> tag. We could also check if all districts have their admin_centre
> as member. If not, we would add it, tagging it with capital=6.
> Any problems, like having to change the district borders or other 
> issues, we would discuss them before doing such changes.
> Cheers,
> Rafael.
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