Towards a Declarative Portrayal and Interaction Model for GIS and LBS
نویسنده
چکیده
An essential property of GIS is the adequate visual portrayal of spatial data. The OGC Styled Layer Descriptor (SLD) specification is a map-styling language for producing geo-referenced maps with user-defined styling. However, SLD shows some weaknesses: 1.) it does not support interaction, 2.) it does not consider the requirements of mobile GIS, and 3.) it is rather restricted in referencing objects. Therefore, we propose a portrayal and interaction model that can be applied to traditional GIS as well as to mobile applications. SLD is used as the base specification especially extended by characteristics of the W3C Cascading Style Sheets specification and by observing the demands of LBS. Another aspect that has influenced the design of our model is its applicability to XML applications like Scalable Vector Graphics (SVG).
منابع مشابه
Towards 3d Lbs - Challenges and Opportunities
Geospatial locations are increasingly considered as a very important factor for providing diverse kinds of public or proprietary services, such as map services including the real time navigation function, and social network services such as the buddy-finding feature. These services are always based on the geospatial locations and therefore named as Location Based Services (LBS). LBS as a specia...
متن کاملAbstraction and Decomposition in Interoperable GIS
ion and Decomposition in Interoperable GIS Agn es Voisard Heinz Schweppe Institut f ur Informatik Freie Universitat Berlin Takustr. 9 D-14195 Berlin fvoisard,[email protected] Abstract With the advent of distributed computing and the increasing trend towards the reuse of geographic data, a new generation of geographic information systems (GIS) is currently being speci ed. The key cha...
متن کاملPsychometric Properties of the Persian Word Pairs Task for Declarative Memory Assessment
Objective: According to the declarative/procedural model, the semantic aspect of language depends on the brain structures responsible for declarative memory. The word pairs task is a common tool for evaluating declarative memory. The current study aimed to design a valid and reliable task for evaluating declarative memory in Persian children at learning and retention stages and to investigate i...
متن کاملProactive Exploitation of the Spatial Context in LBS - through Interoperable Integration of GIS-Services with an Multi Agent System
LBS need to provide information that is user, location and time adaptive. Thus system intelligence must define a module that processes the contextual information to deliver useful and interesting information to the user which has not yet been provided by the system. This paper focuses on two main aspects: One is the integration of agent technology and gis technology. Here we focus on interopera...
متن کاملMobile Maps and More - Extending Location-Based Services with Multi-Criteria Decision Analysis
Maps are often used as decision support tools in both, desktop geographic information systems (GIS) and mobile GIS environments. The decision support capabilities of current location-based services (LBS) are limited to navigation support and database querying with no analytic evaluation of the attractiveness of alternative destinations being offered. This chapter demonstrates how LBS can be ext...
متن کامل