user login 
FOSS4G2006 - Free And Open Source Software for Geoinformatics
FOSS4G2006 - Free And Open Source Software for Geoinformatics
11-15 September 2006 Lausanne, Switzerland
Home > Contribution details
get PDF of this contribution get XML of this contribution get ICal of this contribution
Modelling techniques for spatial information using free and open source tools
This presentation is concerned with the demonstration of specification and modelling 
techniques for the representation of geographic data. We will demonstrate two 
approaches to spatial modelling using freely available tools. We will use an 
extension to the Unified Modelling Language (UML) called ArgoCASEGEO[1] together 
with an OCL tool called USE[2]. Together these represent the object oriented 
paradigm. In contrast we also use an executable specification language called CafeOBJ
[3]. Both of these techniques allow us to build executable prototypes. 
Heterogeneous geographic information consists of metric, topological, and thematic 
data. All this information is time varying. Further it is required that such 
information be stored, queried and updated, which entails the specification of a 
database schema. Geographic information has important economic, social, and legal 
roles which demand high quality data and high quality systems to maintain that 
data.  We feel that modelling this data can contribute to our understanding of its 
inherent complexity.  Given the complexity and diversity involved in modelling 
spatial and temporal data, it is entirely appropriate to tackle small sections of 
the overall problem one at a time using the most appropriate techniques. Equally, in 
order to present a coherent model it is important to combine the various models into 
a meaningful coherent whole. These tasks present a significant modelling challenge. 
In order to make our ideas more concrete we will present a motivating example, which 
consists of a simple map and two executable prototypes, which captures some 
of the complexity present even in a simple map.

[2]A UML-based Specification Environment:
Id: 166
Place: Lausanne, Switzerland
Room: GĂ©nopode (Auditoire C)
Starting date:
14-Sep-2006   15:00
Duration: 30'
Contribution type: Technical Conference
Primary Authors: Mr. BROWNE, Patrick (School of Computing, Dublin Institute of Technology)
Co-Authors: Mr. JACKSON,, Mike (Department of Computing, University of Central England)
Presenters: Mr. BROWNE, Patrick
Included in session: Session 5 : Development
Included in track: Spatial Databases

EPFL | Powered by Indico |  HELP