software process of matching a street address or other geographic entity against a map database in order to derive the geographic co-ordinates of the address or the associated street segment

type of representation of a Feature, including Point, Line, Area and Complex Feature

one-dimensional Feature defined as a sequence of one or more Edges

two-dimensional Feature, defined by one or more Faces

Attribute Type that may have multiple values associated to one and the same instance of a particular Feature Class

alphanumeric identifier for an Attribute type

specific quality or quantity assigned to an Attribute

complex attribute attribute consisting of two or more atomic values and/or attributes

alphanumeric identifier for a Feature Class

crossing and/or connection of two or more roads

NOTE In GDF, an intersection is a Level 2 representation of a junction which bounds a road or a ferry. It is a complex feature, composed of one or more Level 1 junctions, road elements and enclosed traffic areas. The definition is different from GDF because the location referencing system refers to real-world objects rather than a database definition as defined in GDF.

data model entity that represents the single instance of the crossing of two named navigable features

NOTE Crossroad relates to the set of links and nodes which comprise the crossing, and to the crossing of the navigable features to a place.

location where two or more roads connect or intersect

NOTE 1 to entry: A road crossing can be “simple”, corresponding to one junction, or “complex”, including internal road elements and junctions.

finite, alternating sequence of nodes and edges, such that every arc is immediately preceded and succeeded by the two vertices with which it is incident and in which no vertex is repeated, except (possibly) the first and the last one

data model entity that represents the name for the transportation element, including GDF road element, GDF ferry connection, GDF junction, GDF intersection

NOTE Navigable feature name is related to places, crossroads, junctions, and road sections.

one-dimensional type of cartographic feature

explicit area with an outline defined by segments being either polylines or linear locations

two-dimensional face on the surface of the earth, with a specified outline either being a simple geometric figure or an irregular outline/polygon

unit of geographic space defined by two parallels of min./max. latitude and by two meridians of min./max. longitude and that represents the coverage area of the map data enclosed by or located on its outline

parcel shaped like a rectangle

NOTE Regular parcels on the same generalization level are not intended to overlap.

two-dimensional, geographical region on the surface of the earth

NOTE 1 to entry: An area can be represented as an implicit area or an explicit area.

data model entity that represents an icon associated with a cartographic feature

location point captured in the location reference core, which forms the start point of a path external to the location

NOTE 1 to entry: Connection points are used to connect a location reference extension to a location reference core and to connect linear locations to form a subnetwork. The connection point is identified using its connection point index.

NOTE 2 to entry: The connection point index is implicitly defined by the order of the points in a location reference.

CP point belonging to the location reference core

position along a link used to more accurately represent its geometric course, bounded by exactly two segments

point, other than a Node, that defines the shape of an Edge

core point that bounds or is located on the location

NOTE 1 to entry: Location points can coincide with intersection points or routing points. The start and the end of the location are always represented by a location point. Additional intermediate location points can be created to represent the shape of the location. The location point is one of the three defined core point types.

data model entity that provides information about an approaching condition on a road that may require some action by the driver of a vehicle

characteristic of a Feature involving other Features

defined characteristic of a Feature which is dependent on other Features

data model entity that represents a navigable feature which is either a named GDF junction or named GDF intersection, and that relates a named navigable feature to a set of links and nodes and a place

semantic or topological interrelation or dependency between locations in the LRS

NOTE Relationships can exist between locations in the LRS. These relationships will generally be structured to allow more sophisticated use of the location reference, such as a topological or hierarchical structure. For example, a county location may be defined as an aggregate of several city locations or a long stretch of road may be an aggregate of several smaller road segments. Referencing the county may be easier than referencing all the cities which make up the county. This allows scalability and ease of use in the LRSs using the LRM.

angle between a reference direction and the direction to an object measured clockwise

NOTE 1 to entry: Unless otherwise specified, the reference direction is generally understood to be geographic north.

indication of whether a data item is correctly recorded according to a specified data catalogue

measure of closeness of results of observations, computations, or estimates to the true values or the values accepted as being true

status of being topologically connected

NOTE 1 to entry: In a graph, two or more edges are said to be connected if they share one or more nodes.

combination of Attribute and Relationship values which pertain to a Feature and which together define a certain characteristic of the Feature

closeness in time of the (geographic) data to the present reality