[Geojson] polygon point order

[Andrew Turner]

On 10/12/07, Christopher Schmidt <crschmidt at metacarta.com> wrote:
> For the record, I'm against describing how Polygon coordinates should be
> interpreted as part of GeoJSON. GeoJSON is an encoding format once you
> have a polygon. It doesn't tell you how to craft the polygon in the
> first place.

You can say that, but the fact is, people will craft services and
interfaces that are public facing using GeoJSON - and not clarifying
this will just result in confusion or problems.

So better to agree on a standard spec now. GeoRSS & GML (I believe)
use CW ordering - not sure how they handle lines, but my example is
how I've seen them and also "makes sense" (to me)



> The Geometry representation in GeoJSON can be whatever people want to do
> with it. "Legal" geometries are beyond the scope, as far as I'm
> concerned.
>
> But I'm definitely willing to be overruled on this. If I am overruled,
> then I would suggest that intepretation of Geometries be described by
> reference to another well-known/well-understood specification, if any
> such exists.
>
> Regards,
> --
> Christopher Schmidt
> MetaCarta
>


-- 
Andrew Turner
ajturner at highearthorbit.com      42.2774N x 83.7611W
http://highearthorbit.com              Ann Arbor, Michigan, USA
Introduction to Neogeography - http://oreilly.com/catalog/neogeography