| The
topological model aims to capture the notion of connectivity between
spatial objects. Although the topological model usually includes
coordinates for points, it may omit their exact location and makes a
reference to the identification of points. Thus, it may represent the
relative connectivity between objects, with unkown absolute locations
of these objects. point = [ x.real, y.real ] node = [ point, <arcs> ] arcs = [ node, node, polygon, polygon, <point> ] polygon = <arcs> region = polygon | [ polygon, {region} ] [] tuplas, <> lists, {} sets  Topological A = < a, b > B = < b, c > a = [ N2, N1,, A, < [1, 5], [3, 9] > ] b = [ N1, N2, B, A, < > ] c = [ N1, N2,, B, < [8, 7], [5, 1] > ] N1 = [ [5, 7], <a, b, c> ] N2 = [ [3, 5], <a, b, c> ] |
Última modificación: Wednesday, 23 de November de 2005, 17:12