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Re: [Geojson] Drop all CRS? (Tracker issue #94)

tõnis kärdi <tonis.kardi@gmail.com> Tue, 12 January 2016 16:42 UTC

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Date: Tue, 12 Jan 2016 18:42:40 +0200
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From: tõnis kärdi <tonis.kardi@gmail.com>
To: Dirk-Willem van Gulik <dirkx@webweaving.org>
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Subject: Re: [Geojson] Drop all CRS? (Tracker issue #94)
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2016 1 12 08:48 kirjutas kuupäeval "Dirk-Willem van Gulik" <
dirkx@webweaving.org>:
>
> On 07 Jan 2016, at 23:55, Sean Gillies <sean.gillies@gmail.com> wrote:
> > In https://github.com/geojson/draft-geojson/issues/94, it is suggested
that
> >> Relative to https://www.ietf.org/id/draft-butler-geojson-06.txt
> >>
> >> Section 6.3 and 6.3
> >>
> >> As the original
> >>
http://geojson.org/geojson-spec.html#coordinate-reference-system-objects
> >> is dropped from the internet draft - I am not sure why these sections
> >> cannot be simplified to simply stating that any and all coordinates
are to
> >> be in EPSG:4326.
> >>
> >> Or alternatively - to introduce these - but do so wholesale and as a
first
> >> class citizen (and allowing variant/attributed coordinates); with
absence
> >> denoting EPSG:4326
> >>
> > I would love to drop all CRS other than the default (CRS84, to be
precise,
> > not EPSG:4326) and have proposed that we do so in the past, but I
believe
> > that we don't have consensus for anything other than what's in
> > https://tools.ietf.org/html/draft-ietf-geojson-00#section-3, a strong
> > recommendation against anything other than the default.
>
> Could you elaborate why you would want CRS84 rather than EPSG:4326 ?

I think it's because 4326 is a geodetic system and therefore entails
lat-lon order for coordinates. GeoJSON has the coordinates in lon-lat
order, therefore CRS84 is used.

all the best,
tõnis

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