neighbourhood

Articles

• Autocorrelation
  13 October 2004, by D. P.

  Correlation of a variable with itself, whenever considering observations with a gap in time (temporal autocorrelation) or in space (spatial autocorrelation). If presence of a quality in part of a territory makes its presence in neighbouring areas more or less probable, there exists a contiguity effect in the spatial structure, the phenomenon shows spatial autocorrelation; positive autocorrelation: neighbouring regions tend to have identical properties or similar values (e.g. homogeneous (...)

• Neighbourhood
  26 August 2004, by D. P.

  The term neighbourhood is used for everything that is close, nearby, contiguous. Distance as measure of separation, of interval between two places may not be dissociated from the definition of a neighbourhood. The neighbourhood reaches its limit point (immediate neighbourhood) when the spatial units are contiguous, adjoining. A neighbourhood is always expressed into a metric space. The measure of topological relations may be used to express contiguities between objects or places which are (...)

• Discontinuity
  27 July 2009, by J.-C. F.

  In a very wide acceptation, discontinuity is what separates two different, neighbouring spatial ensembles. It is possible to distinguish elementary discontinuity, constructed on the basis of a single indicator, which is a useful but vulnerable indicator; and structural discontinuity, which is the superimposition of numerous elementary, convergent discontinuities that are measured from a coherent set of indicators. This latter type can be defined as the spatial form of the transition between (...)