Re: [OSM-talk-ie] Choice of grid

[Donal Diamond]

Who are your users? - the public or gis-professionals?

Most non-professional people and outdoor enthusiasts would use Irish Grid
EPSG:29903

(29903 replaces OSNI 1952 / Irish National Grid (code 29901) and TM65 /
Irish Grid (code 29902).)

Donal

On 25 April 2017 at 12:56, Paul Oldham  wrote:

> Folks, I could use some advice.
>
> As I've mentioned here before we've put Irish tiles into our mapping
> software, mainly based on OSM data. In the application we show grid
> references and I'm aware that there's 2/3 Irish grid reference systems
> which have been used in Ireland: historically you had EPSG:29902/EPSG:29903
> (which seem to be identical for our purposes) but as I understand it you've
> now moved over to the Irish Transverse Mercator (ITM) or EPSG:2157.
>
> My questions are:
>
> 1. I'm assuming that OSI and OSNI maps are now all EPSG:2157. Is that
> right?
>
> 2. Assuming I'm right does anyone still use EPSG:29902/3 or has everyone
> now switched to using EPSG:2157 for quoting grid references?
>
> TIA
>
> --
> Paul
>
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[OSM-talk-ie] Choice of grid

[Paul Oldham]

Folks, I could use some advice.

As I've mentioned here before we've put Irish tiles into our mapping 
software, mainly based on OSM data. In the application we show grid 
references and I'm aware that there's 2/3 Irish grid reference systems 
which have been used in Ireland: historically you had 
EPSG:29902/EPSG:29903 (which seem to be identical for our purposes) but 
as I understand it you've now moved over to the Irish Transverse 
Mercator (ITM) or EPSG:2157.


My questions are:

1. I'm assuming that OSI and OSNI maps are now all EPSG:2157. Is that 
right?


2. Assuming I'm right does anyone still use EPSG:29902/3 or has everyone 
now switched to using EPSG:2157 for quoting grid references?


TIA

--
Paul

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