Authors:
Jefferson Amaral da Silva
1
and
Karla Donato Fook
2
Affiliations:
1
State University of Maranhão (UEMA), Brazil
;
2
Federal Institute of Education and Science and Technology of Maranhão (IFMA), Brazil
Keyword(s):
Directional Relationships, Geometric Algorithms, Geographic Information Systems, COP-Model, COP-VW.
Related
Ontology
Subjects/Areas/Topics:
Social and Legal Issues
;
Society, e-Business and e-Government
;
Web Geographical Information Systems
;
Web Information Systems and Technologies
;
Web Interfaces and Applications
Abstract:
An important feature for geographic systems is to identify directional relationships between objects stored
in Spatial Database Management Systems (SDMS). This feature is used with other information type, such as
Metric and Topological Relationships. This features group provides relative positioning between
Geographical Objects in some direction, and supports decision makers job, such as to decide where setting
up certain buildings, opening of access roads, and installation of transmission towers, for instance. Some
approaches addresses to direction definition, but without implementation. Cone-Over-Projection Directional
Model (COP Model) refines directions definition and enhances spatial queries accuracy in a significant
form. The Model has a computational tool to support its application. This work presents the COP Model
implementation through COP Viewer (COP-VW) application that uses Geometric Algorithms added to an
SDMS located in a Web Server. Several users can access COP Model r
esources at different geographical
locations, and different geodatabases can be available to environmental and urban planning decisions. This
is a first step to migrate COP Model to mobile platform.
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