[OSM-talk] RFC: geodesy=pillar

[Thomas Wood]

On 7/16/07, Iván Sánchez Ortega <ivansanchez at escomposlinux.org> wrote:
> Hi there,
>
> Anybody attending SotM should have heard Steve Chilton in "Map Room 101" and
> me, talking about those big chunks of rock in the middle of nowhere that are
> used by topographers as points of reference. For those who didn't attend
> SotM, have a looky at the photos here:
> http://ervijarico.blogspot.com/2007/05/paseando-por-un-vrtice-geodsico.html
> http://alicantevivo.blogspot.com/2007/06/los-vrtices-geodsicos.html
> http://en.wikipedia.org/wiki/Geodesy
>
> Call them triangulation pillars, call them geodetic vertices, call them how
> you like. Fact is, I'm gonna upload a few thousand of them in a couple of
> days.
>
> So, I'm proposing the following tags to be applied on nodes:
>
> geodesy = pillar
> Depicts a geodetic (or geodesic) pillar
>
> geodesy:network = foobar
> Several pillars together form a geodetic network, which usually has a name.
>
> geodesy:reference = 1234
> Pillars in the same network are identified by a reference number.
>
>
>
> So, any comments on this?

I'd be interested in this. I know sources of data for both UK
Trigpoints and Benchmarks, the only problem could be the data
licensing.

http://www.trigpointinguk.com/
http://www.bench-marks.org.uk/

The OS also has a complete database of all trigpoints/benchmarks here:
http://benchmarks.ordnancesurvey.co.uk/

The Trigonomy Yahoo group is the primary place for discussion of UK
trigpoints, they also have several complete excel databases that they
have transcribed from documents at the OS.
http://groups.yahoo.com/group/trigonomy/

-- 
Thomas Wood
(Edgemaster)