GPS Datum for Ireland

nick789uk · Posted: Wed Nov 05, 2008 8:26 am Post subject: GPS Datum for Ireland

Hi all just a quick question I am thinking of going to Ireland this coming summer to do some walking and was just wondering what datum do I us on my GPS over here its the OSGB but I dont have a clue for Ireland any ideas, also is there any digital maps that I can buy of Ireland thanks for your time.

Nick789uk

Andy_P · Posted: Thu Nov 06, 2008 1:51 am Post subject:

Firstly, in order to say whether Ireland maps are available, we need to know the make and model of your GPS unit.

As for the datum required, I'm afraid I don't know. On most stand-alone satnavs (such as my Tomtom) the datum used is fixed, you have no control over it, but the supplied maps certainly include Ireland and they certainly work OK.

MaFt · Posted: Thu Nov 06, 2008 12:04 pm Post subject:

i would presume with him walking that it won't be a tomtom he's taking?! Laughing Out Loud

MaFt

nick789uk · Posted: Thu Nov 06, 2008 11:02 pm Post subject: Ireland datum

Hi I use both a PDA with os mapping and a garmin etrex vista to use them in the uk you have to but the datum to osgb i think it will be simular in Ireland just need to know what thanks for all your help.
Nick

philpugh · Posted: Fri Nov 07, 2008 2:30 pm Post subject:

The datum will only be really relevant if you are trying to use your GPS in conjunction with a map. If you are using a paper map then the datum should be on it (or at least available from the publisher). Electronic maps should have datum included in them.

In the worst case stick to WGS84 - you can at least plot your tracks on Google earth or similar.
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Phil

MaFt · Posted: Fri Nov 07, 2008 5:43 pm Post subject:

i had a play in garmin mobile xt this afternoon and in the settings you can choose the lat/lon format including decimal degrees, DMS, British Grid (presumeably OSGB?) and one of the options was "Irish (ITM)" - don't know if that helps at all? the datum option was still WGS 84 though...?!

MaFt

philpugh · Posted: Fri Nov 07, 2008 6:47 pm Post subject:

nick789uk · Posted: Tue Nov 11, 2008 10:41 pm Post subject: Re Datum ie

Hi folks thanks for all your replies I will look on the Garmin to see if it has any of these datums in the artical on it and will use them, but thank you all for replying if I get any futher on which to use I will post it here thanks again.

Nick

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