[Talk-GB] Quarterly Project : Schools - Wales data

Bogus Zaba bogsub at bogzab.plus.com
Tue Jan 19 16:04:31 UTC 2016

On 19/01/16 15:25, Robert Whittaker (OSM lists) wrote:
> On 19 January 2016 at 13:17, Bogus Zaba <bogsub at bogzab.plus.com> wrote:
>> At the end of the day however, if Welsh schools are tagged with
>> ref:estyn=* but not with ref:edubase=*, am I right in thinking that they
>> will not be picked up as "progress" in the quarterly project?
> All UK ways and relations tagged with either amenity=school or
> amenity=college will get picked up by my tool at
> http://robert.mathmos.net/osm/schools/ . I then attempt to match these
> OSM objects with the schools on the official lists. Any ref:edubase,
> ref:seedcode and ref:deniirn values are used on a first pass, but
> after that there is a second pass that matches each unmatched school
> on the official list to the nearest OSM object within 1km that hasn't
> yet been matched. In rural areas (schools generally more than 1km
> apart) this works very well. In urban areas the tool can often match
> things the wrong way. But a match will still correspond to a school in
> OSM being counted, even if it's an incorrect match.
> So apart from some of the matches in the tool being wrong, almost
> everything should still be counted. (The exception is if there's a
> missing postcode in the official data, or the actual location of the
> school is more than 1km from the postcode centroid. Then the match
> won't happen.)
> Hope that helps,
> Robert.
OK, I get that now. I'll crack on with what I was doing last week.

Main problems I am seeing is with schools apparently changing names
(is it just a name change?) or adding new school on the same site as
houses another one. Some will require ground surveys which I will not
be able to do as I draw circles of greater and greater circumference
from home base.


Dr Bogumil N Zaba

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