A vocabulary for describing topological relations between features. $Id: spatial# 81 2012-02-05 11:06:49Z non88sense@gmail.com $
NeoGeo Spatial Ontology
Relation C(x,y), read as 'x is connected with y'. This relation holds when two regions share a common point. It is the primitive relation
in the RCC theory.
connects with
testing
Relation DC(x,y), read as 'x is disconnected from y'. In order to prevent an exponential growth of triples when handling large
amounts of data, a closed world assumption may also be possible. More precisely, by considering not explicitely connected regions as discrete
regions. Moreover, discrete regions, which are not explicitely labeled as externally connected, would be considered disconnected from
eachother.
disconnected from
testing
Relation DR(x,y), read as 'x is discrete from y'. In order to prevent an exponential growth of triples when handling large
amounts of data, a closed world assumption may also be possible. More precisely, by considering not explicitely connected regions as discrete
regions. Moreover, discrete regions, which are not explicitely labeled as externally connected, would be considered disconnected from
eachother.
discrete from
testing
Relation EC(x,y), read as 'x is externally connected with y'. This relation holds, when the two regions share at least
one common point of their borders, but share no points of their interiors, i.e. they do not overlap.
externally connected with
testing
Relation x=y, read as 'x is identical with y'. This relation holds when two regions are spatially co-located.
equals
testing
A geographical feature, capable of holding spatial relations.
Feature
testing
Relation NTPP(x,y), read as 'x is a non-tangential proper part of y'. This relation holds, whenever a region x is
labeled as a proper part of a region y, and they do not share common point in their borders.
is non-tangential proper part of
testing
Relation NTPPi(x,y), read as 'x non-tangentially properly contains y'. Inverse of the NTPP(x,y) relation.
non tangentially properly contains
testing
Relation O(x,y), read as 'x overlaps y'. A region x overlaps a region y, if they share at least one common point of their interiors.
overlaps
testing
Relation P(x,y), read as 'x is a part of y', holds whenever the region x is contained within the borders of the region y.
is part of
testing
Relation PO(x,y), read as 'x partially overlaps y'. A region x overlaps a region y, if they share at least one common point of their
interiors, and one does not contain the other within its borders.
partially overlaps
testing
Relation PP(x,y), read as 'x is a proper part of y', means that the region x is contained within the borders of the
region y, and region y is not contained within the borders of the region y, which means they are not equals.
is proper part of
testing
Relation PPi(x,y), read as 'x properly contains y'. Inverse of the PP(x,y) relation.
properly contains
testing
Relation Pi(x,y), read as 'x contains y'. Inverse of the P(x,y) relation.
contains
testing
Relation TPP(x,y), read as 'x is a tangential proper part of y'. This relation holds, whenever a region x is
labeled as a proper part of a region y, and they share at least one common point in their borders, which means that they are
externally connected.
is tangential proper part of
testing
Relation TPPi(x,y), read as 'x tangentially properly contains y'. Inverse of the TPP(x,y) relation.
tangentially properly contains
testing
Although this relation is not a part of the RCC theory, it has been introduced in order to detect relations between regions
which are inconsistent with the RCC axioms.
inconsistent with
unstable