236 Annexes
period having a duration nominally equivalent to the periodic time of the Earth's rotation around its axis
defmition
representation of a concept by a descriptive statement which serves to differentiate it
from related concepts (ISO 1 0 2000, IS036 2002)
deprecated term
term rated according to the scale ofthe term acceptability rating as undesired (lSOI0
2000, IS036 2002)
direct evaluation method
method of evaluating the quality of a dataset based on inspection of the items within
the dataset (lS046 2001)
direct position
position described by a single set of coordinates within a Coordinate Reference System (lS039 2003)
directed edge
directed topological object that represents an association between an edge and one of
its orientations (lS039 2003)
NOTE
A directed edge that is in agreement with the orientation of the
edge has a + orientation, otherwise, it has the opposite (-) orientation. Directed edge
is used in topology to distinguish the right side (-) from the left side (+) of the same
edge and the start node (-) and end node (+) of the same edge and in computational
topology to represent these concepts.
directed face
directed topological object that represents an association between a face and one of
its orientations (lS039 2003)
NOTE
The orientation of the directed edges that compose the exterior
boundary of a directed face will appear positive from the direction of this vector; the
orientation of a directed face that bounds a topological solid will point away from
the topological solid. Adjacent solids would use different orientations for their
shared boundary, consistent with the same sort of association between adjacent faces
and their shared edges. Directed faces are used in the coboundary relation to maintain the spatial association between face and edge.
directed node
directed topological object that represents an association between anode and one of
its orientations (lS039 2003)
NOTE
Directed nodes are used in the coboundary relation to maintain the
spatial association between edge and node. The orientation of anode is with respect
to an edge, "+" for end node, "-" for start node. This is consistent with the vector notion of"result = end - start".
period having a duration nominally equivalent to the periodic time of the Earth's rotation around its axis
defmition
representation of a concept by a descriptive statement which serves to differentiate it
from related concepts (ISO 1 0 2000, IS036 2002)
deprecated term
term rated according to the scale ofthe term acceptability rating as undesired (lSOI0
2000, IS036 2002)
direct evaluation method
method of evaluating the quality of a dataset based on inspection of the items within
the dataset (lS046 2001)
direct position
position described by a single set of coordinates within a Coordinate Reference System (lS039 2003)
directed edge
directed topological object that represents an association between an edge and one of
its orientations (lS039 2003)
NOTE
A directed edge that is in agreement with the orientation of the
edge has a + orientation, otherwise, it has the opposite (-) orientation. Directed edge
is used in topology to distinguish the right side (-) from the left side (+) of the same
edge and the start node (-) and end node (+) of the same edge and in computational
topology to represent these concepts.
directed face
directed topological object that represents an association between a face and one of
its orientations (lS039 2003)
NOTE
The orientation of the directed edges that compose the exterior
boundary of a directed face will appear positive from the direction of this vector; the
orientation of a directed face that bounds a topological solid will point away from
the topological solid. Adjacent solids would use different orientations for their
shared boundary, consistent with the same sort of association between adjacent faces
and their shared edges. Directed faces are used in the coboundary relation to maintain the spatial association between face and edge.
directed node
directed topological object that represents an association between anode and one of
its orientations (lS039 2003)
NOTE
Directed nodes are used in the coboundary relation to maintain the
spatial association between edge and node. The orientation of anode is with respect
to an edge, "+" for end node, "-" for start node. This is consistent with the vector notion of"result = end - start".