[OSM-talk-ie] [OSM-talk] All places in Ireland - GNS Data now accessible!
Christian van den Bosch
cjb at cjb.ie
Sat Sep 15 07:45:03 BST 2007
Dermot McNally wrote:
> Those of you at the meeting in Balbriggan will recall our conversation
> about the GNS data and my eagerness to turn it into usable OSM data.
> It took me a while longer, but some usable work is now there to be
> name:ga, name:en: For places where English and Irish names were
> available, both are entered. Whichever named seemed from the
> data-source to be definitive (usually the English one, but possibly
> different in the Gaeltacht) was used for the 'name' attribute, which
> is likely to be necessary to ensure that the renderers will Do The
> Right Thing.
Anything's got to be better than the GNS approach of "include the same
POI two or possibly three times in different languages apparently at
random", though I guess this relates to the quality of the source
material used by the NGA. It would be interesting to know the copyright
status of this source material.
> is_in: I've built a county lookup table of the codes used in the ADM1
> field. Based on this, I've set is_in to "County <county name>" for
> each POI where this was possible. (some have ADM1 set to 00, and I
> haven't worked out whether this corresponds to anything other than
Most of these are in the 'sparse' area across the midlands, but there's
a scattering of them in just about every county. I'm not sure how best
to handle the points that just plain have the wrong county set.
> place_county: This doesn't seem to be in standard use, but it struck
> me as worthwhile to set a field to the county name (without the prefix
> 'County '). Maybe we'll find a use for it...
Sounds good to me. Though is_in and place_county together sound a bit
> population: Only present for a handful of locations, but set where
Note the age of the data though - I'd be inclined to import the NGA date
field along with the rest.
> I'd be very interested in some comments on this. It would be really
> easy to add these to the database, but we should have a good look now
> just to make sure we like what's going in. Since the source is set, it
> would be easy to back the stuff out as well, but that's a bit rough on
> anyone who has already adopted some of the points, enhanced and maybe
> respotted them :-)
Probably better to do it earlier rather than later before there's a lot
of other data in place already? Can we get a count of Irish POIs
currently in OSM? (What _is_ a POI in OSM exactly? A node that doesn't
belong to any segments or ways? Does it need to have specific tags set?)
Barry Hunter wrote:
> Just a note about the data in GNS specific to Ireland. It seems that
> there is a patch of data not full complete, see:
Yup, this sounds like the same problem noted above (particularly with
the ADM1 value set to 0). Let's keep our fingers crossed for updates
from the NGA.
Christian / cjb
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