Open Access. Powered by Scholars. Published by Universities.®
Social and Behavioral Sciences Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Social and Behavioral Sciences
Automatic Integration Of Spatial Data In Viewing Services, Ara Tooamnian, Lars Harrie, Ali Mansourian, Petter Pilesjö
Automatic Integration Of Spatial Data In Viewing Services, Ara Tooamnian, Lars Harrie, Ali Mansourian, Petter Pilesjö
Journal of Spatial Information Science
Geoportals are increasingly used for searching viewing and downloading spatial data. This study concerns methods to improve the visual presentation in viewing services. When spatial data in a viewing service are taken from more than one source there are often syntactic semantic topological and geometrical conflicts that prevent maps being fully consistent. In this study we extend a standard view service with methods to solve these conflicts. The methods are based on: (1) semantic labels of data in basic services (2) a rule-base in the portal layer and (3) integration methods in the portal layer. To evaluate the methodology we …
Optimizing Map Labeling Of Point Features Based On An Onion Peeling Approach, Wan D. Bae, Shayma Alkobaisi, Sada Narayanappa, Petr Vojtechovsky, Kye Y. Bae
Optimizing Map Labeling Of Point Features Based On An Onion Peeling Approach, Wan D. Bae, Shayma Alkobaisi, Sada Narayanappa, Petr Vojtechovsky, Kye Y. Bae
Journal of Spatial Information Science
Map labeling of point features is the problem of placing text labels to corresponding point features on a map in a way that minimizes overlaps while satisfying basic rules for the quality. This is a critical problem in the application of cartography and geographical information systems (GIS). In this paper we study the fundamental issues related to map labeling of point features and develop a new genetic algorithm to solve this problem. We adopt a method called convex onion peeling and utilize it in our proposed convex onion peeling genetic algorithm (COPGA) to efficiently manage map labels of point features. …