-
Point file of Mountains taken from the OSi National 1:1Million Map Of Ireland
-
Restricted to roads connected at different level crossing as i.e. at intersections of motorways or at exits of motorways.
-
Polygon file of the Boundaries Seawater Area taken from the OSi National 1:250k Map Of Ireland
-
An area controlled by an administrative authority. National territory and all national subdivisions up to fifth order.
-
Military, commercial and leisure airports and airfields with area ≥ 0.4 km²
-
Access and Exit Points on all Motorway class roads
-
An area containing a concentration of buildings and other structures.
-
Length ≥ 125 meters. Have to be connected to a ferry station.
-
Only operational hard paved runways of airports (portrayed as an area feature) are portrayed. Runways cannot be portrayed stand-alone without the airport they belong to. Runway is portrayed only with line feature. The length of the line feature should correspond to the real...
-
Start and end points of watercourses as well as confluences (Confluence, Source, Mouth, Boundary)
-
Water with area ≥ 0.4 km². Smaller lakes or ponds can be portrayed when significant to determine land occupation. Lakes being part of the water network have to be topologically connected to watercourses.
-
A point where a railway crosses a road at the same level. The level crossing will be associated both to the road and railway network.
-
All dams on watercourse portrayed as a single line
-
Landmark feature, major power stations
-
Usually the sea or ocean area.
-
The vertical datum for the shoreline should be mean sea high water in tidal maritime zone or normal water.
-
Landmark feature or be of national or tourist interest
-
Area ≥ 0.4 km² The point representation of a port collected as an area feature that provides the intermodal connection to the road or railway network.
-
Area < 0.4 km² Military, commercial and leisure airfields (Reference: GISCO Airport database)
-
The landmask area is enclosed by the coastline/shoreline and sea limit. It must not depict any lakes or other inland waters. Landmask area serves as reference layer for geometrical coherence between layers
Derilinx
*By submitting this form you consent to subscribing to our mailing-list and receiving information from the Open Data Unit in the Department of Public Expenditure and Reform about open data news and events.