Abstract
Geographic data analysis is based on the use of spatial relations as a means of selecting and processing geometric data associated with geographic features. Starting from 1990, topological relations have been recognized as fundamental criteria in geographic data processing, leaving out other kinds of spatial relations, such as directional relations. The latter ones, despite having quite an important role in geospatial applications, have been developed as theoretical models but very little implemented in systems. We refer in this paper to the 5-intersection model for expressing projective relations that can be used to implement directional relations in various frames of reference. We design an application framework in Java and use the framework for answering various categories of queries involving directions. We finally outline how to use the framework for validating the cognitive adequacy of relations with user tests.
Highlights
The significant increase in the availability of georeferenced data has resulted in the development of many Geographical Information Systems (GIS) applications in recent years
Reference open standards in the spatial data panorama are established by several organizations, such as the Open Geospatial Consortium (OGC), the International Organization for Standardization (ISO), and the International Hydrographic Organization (IHO)
We considered the following possible categories of requests to test directional relations:
Summary
The significant increase in the availability of georeferenced data has resulted in the development of many Geographical Information Systems (GIS) applications in recent years. To have a qualitative understanding of projective relations, it is helpful to think about different two-dimensional views of a three-dimensional real-world scene of objects: changing the point of view, metric aspects such as distances and angles among the objects appear to be different, but there are properties that are common in all the views.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
