-
RailNetworkSegments, have both a GDF1 and GDF2 representation. A GDF1 is required for all railways. GDF2 is required for Standard (mainline) railways only.Following European standards, a Network is derived from centreline data. A Network consists of a set of specified points, lin
-
A permanent roofed construction, currently or formerly intended for shelter. A building under construction is included as a building, if it is apparent that, on completion, it will meet the definition for a building. A structure that is identifiable as having once been a building
-
A Building Group object links together Buildings that belong to a named terrace. The Buildings must be physically connected such that one BuildingGroup's polygon geometry equals the union of two or more contiguous Building polygons.
-
A GDF2 is a notional line indicating the centerline of a Way excepting that in the case of a dual carriageway or motorway, it indicates the central median between opposing carriageways and in the case of a roundabout, it deviates from following the centreline around the roundabou
-
A Way Point is a point that marks either an end point of a Way Network Segment, or a point on the Way Network Segment at which there is a transition, or a point at which there is a junction with another Way Network Segment of the same GDF level.
-
A Rail Point is a point that indicates either an end point of a railway line, or a point at which there is a transition or junction between railway lines. A Rail Point also denotes a Mile Post, as a vertex, on a GDF2 RailNetworkSegment only.
-
Way objects represent all drivable and walkable roads and paths. All Ways from Motorway to Fifth Class have polygon geometry; some lower class roads may also have polygon geometry. The Way Skin-of-the-Earth requirements apply only to Ways polygon representation. Ways objects also
Eolas Teagmhála
Aonad Sonraí OscailteAn Roinn Caiteachais Phoiblí Bonneagair Athchóiriúcháin Seirbhíse Poiblí agus Digitiúcháin,
Teach Faiche Stiabhna,
Ardán Phort an Iarla, D02 PH42 BAC 2 Éire.
Tabhair aiseolas dúinn
Is mór ag an Aonad Sonraí Oscailte do chuid aiseolais, ceisteanna nó tuairimí. Bímid sásta i gcónaí cloisteáil uait.
Derilinx