OBJECT-ORIENTED ANALYSIS AND DESIGN CONCEPTS OF SPACE AND TIME Phần 7 potx

... relative space- time view 14 2 .7 Choosing the view for a GIS 16 2.8 Time geography 16 2.9 Time geography and GIS 19 2.10 Main elements of a space- time path 20 2.10.1 State as an element of the space- time ... book 7 2 Concepts of space and time 9 2.1 The space- dominant view 9 2.2 The time- dominant view 11 2.3 The absolute space- time view 12 2.4 The re...

... in space and time, i.e. the space- time path (relative space- time view). However, by having space and time as orthogonal dimensions, Time Geography requires the absolute view of space and time. ... structures of a space- time path: identity, location and direction. Any OBJECT-ORIENTED DESIGN FOR TEMPORAL GIS 26 (1 977 ), Carlstein, Parkes and Thrift (1...

... prospect of an object-oriented design method. His method improves the concepts of object orientation and their respective notations as a whole, overlapping with the concepts of object-oriented analysis. Other ... relationship OBJECT-ORIENTED ANALYSIS AND DESIGN 41 Snodgrass and Ahn (1985, 1986) have also demonstrated the existence of a true orthogonality betwee...

... nearness of states and events on the space- time path of a lifespan of an entity. The demise circumstance characterises the closure of a space- time path. It can occur on the space- time path at any time ... chapter. OBJECT-ORIENTED DESIGN FOR TEMPORAL GIS 46 feasibility of applying object-oriented methods to the problem of handling space and time in GIS....

... understanding of the STDM and the information stored in the database. 6 .7 CONCLUSIONS This chapter has illustrated some examples of how space- time paths can be created by a user. The states and ... Defanti and Brown, 19 87) so users need to have a natural acuity for recognising and interpreting visual patterns (Fedra, 1992; Buttenfield, 1993), and an intuitive understandin...

... data model capture the synergy between space and time of a space- time path in Time Geography. In terms of STDM, spatio-temporal data types offer the advantage of defining object classes with properties ... simultaneously defined in space and time (2D space, time) . An event in space and time can be defined as (point, point). Otherwise an event having a certain...

... 53 classes 61, 77 desirable characteristics 53 evaluation 53 evolution in definition 61 methods 66, 69, 75 , 76 overview 102 properties 66, 72 , 74 , 77 scenarios 63 77 version management 77 structural ... models 2 soil maps 35 space 17 absolute space 9 relative space 13, 16 space- time entity representation 5 space- time maps 14 space- time path 16, 20–5 configura...