MountainViews
Welcome to MountainViews
If you want to use the website often please enrol (quick and free) at top right.

General Whatever you want to say that doesn't fit under the comments about places or another forum.
Sort by >

More controls

<< Prev page 1 .. 143 144 145 146 147 148 .. 388 Next page >>
Post details Post   (Contract pics)
At approximately 1.. by Dessie1   (Show all posts)
The programme on t.. by aidand   (Show all posts)
Stumbled across an.. by Trailtrekker   (Show all posts)
Congratulations to.. by mcrtchly   (Show all posts)
Pardon my ignoranc.. by march-fixer   (Show all posts)
Thanks for you cle.. by dewsbury   (Show all posts)
simon3
2012-05-23 00:36:35
Map coordinates of Djouce.
The majority of maps in Ireland such as the OS/ LPS/ Harveys/ Healy etc use a system such that a place is represented in this style A 123 456. All GPS units and all books I have seen use the same style for representing the Irish Grid. The "A" represents one of 25 squares that cover the island each of 100km by 100km. The "123" represents the easting within that square or the distance from the left edge, in this case 12.3km The northing represents the distance from the bottom of the square, in this case 23.4km

So any point on the island can be represented to within 100m with just 7 characters. Djouce for example is O 178 103 (that is O for Oscar, followed by 6 numbers). For greater accuracy you can extend the number of digits in the easting and northing, so for example a more accurate position for Djouce is given on the website as O17858 10360, which represents a point to within 1 metre.

While East-West maps have a number of useful characteristics, regrettably they have chosen not to use this well established convention and instead of using the 100km squares mentioned before, use a distance from a point off the south west coast. The point is known as the "false origin". In that system Djouce's coordinates of 3178 2103 means 317.8km east of this point and 210.3 km north of it. You will note that the "178" and "103" are the same digits as appear in the conventional grid reference.

At least some of the East West maps do show the letters that the conventional system uses in a little inset towards the bottom left and you could, with some effort, figure out what the letter should be. (The letter is known as the myriad letter incidentally.) However you may find it easier to use one of the other types of maps to work with grid references and GPS units.

Another advantage of the other maps is that they show the eastings and northings on the grid lines at intervals across the sheet. This is advantageous because when the map is folded it makes it possible to work with grid references. For any East-West map I have been able to check this is not the case, which is extremely awkward. For example to go from a GPS reading on say a Garmin GPS you take the figure from the GPS which might be O17858 10360 and first remove the last two digits of the easting and northing which is easy enough but then you need to figure out what figure to put in front of the easting and northing based on the myriad letter, a process which of course is error prone. You then need to unfold the map completely to be able to see the easting and northing printed at the side of the map and only then can you figure out your position on the map.
Hi all,
I m.. by dewsbury   (Show all posts)
This week sees the.. by wicklore   (Show all posts)
On our second last.. by Hilltop-Harrier   (Show all posts)


RECENT CONTRIBUTIONS 1 2 3 .. 21 Next page >>
Forum: General
A New Hazard!
Aidy 15 hours ago.
https://www.bbc.co.uk/news/uk-northern-ireland-45231987Never heard of this happening before.

  
Summit Comment
Crocknafarragh: The High Route around Glentornan Lough
jsramsey1491 16 hours ago.
Last Thursday (16/08/2018) a few friends and I decided to do a recce of a walk around Glentornan Lough. We started close to the Gaelic pitch on the southwestern shore of Lough Nacung Upper, passed...

  
Summit Comment
An Bhinn Bhuí: Benwee Head Loop.
sandman a day ago.
As already stated Benwee Head has some of the most dramatic costal scenery in Ireland and with this in mind i decided to enjoy on a clear sunny day the joys of walking the 12.4km of the Benwee Hea...

Track
Meelin Hill, Brackloon and Knockafeehane
Bunsen7 a day ago.
A grand and simple waymarked trail for a day of low lying cloud.Park up at the post office beside the Tom Crean mini-p... walk, Len: 7.2km, Climb: 343m, Area: Knockafeehane, Slieve Mish (Ireland) Kno

  
Track
Eagles Hill, Mullaghbeg, Beenrour
bogtrotter a day ago.
There?s plenty of room for parking at the cemetery at the top of Coad Road, near Castle Cove. From here we headed SW ... walk, Len: 21.6km, Climb: 825m, Area: Eagles Hill, Dunkerron Mountains (Irelan

  
Summit Comment
Knocknanacree: Storm Beach and Cliffs at lower western reaches
Bunsen7 a day ago.
A view of "Acres" from Minard Beach. This is apparently a geologically interesting spot in itself as it is a storm beach comprised of large sandstone boulders. The castle is on private land and no...

Track
Erris Head Loop
simon3 2 days ago.
Simple walk to Erris Head. On the occasion we did it, there were dark clouds and big showers. walk, Len: 4.7km, Climb: 98m, Area: Erris Head Hill, Mayo Coastal Hill (Ireland...

  
Summit Comment
Knockafeehane: From the horse's mouth
Bunsen7 a day ago.
This is the trail description post at Q59652 00497. It summarises the route if taken from east to west, as per track 3881.Vastly superior to my own garbled efforts!Annascaul obviously is a very we...

  
Summit Comment
Knockafeehane: Easily Accessible and not overly demanding
Bunsen7 a day ago.
There is a waymarked trail to the summit which loops over the ridge leading west from this hill. See track 3881.The quickest route to the top would see you park in Annascaul village and walk up th...

Summit Comment
Cashloura: An enjoyable walk for all ages
CaminoPat 3 days ago.
Park at W20849 49704 at Coillte forest entrance just off the R586 Regional Road between Dunmanway and Drimoleague. Parking available for 6-8 cars. Follow forest road which is along line of disused...

  
Forum: General
An Sli
Slier159 2 days ago.
Hello all,I am currently trying to organize a longs distance walk from Killarney to Derry city, using the existing National Waymarked Trails along the West coast. A 1,000km of Trail already exist ...

  
Summit Comment
An Bhinn Bhuí: Benwee Loop walk towards Portacloy.
ucampbell 4 days ago.
The Loop walks here are well signposted, it's a great idea to go out onto each headland.


RECENT CONTRIBUTIONS 1 2 3 .. 21 Next page >>