Re: [HOT] Tracing the clan boundaries in Liberia

2014-11-22 Thread Ralf Stephan
Clan names from the import had problems with truncation, as far as I
recall, so they would have to be verified.

On Sat, 22 Nov 2014 15:01 Andrew Buck  wrote:

> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA1
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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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> > HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
> >
>
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Re: [HOT] Tracing the clan boundaries in Liberia

2014-11-22 Thread Andrew Buck
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

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.
> 
> 
> 
> ___ HOT mailing list 
> HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
> 

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[HOT] Tracing the clan boundaries in Liberia

2014-11-22 Thread Rafael Avila Coya
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Hash: SHA1

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.


- -- 
Twitter: http://twitter.com/ravilacoya

- 

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