The Spatial Data Infrastructure initiatives are now broadly developed and deployed. However, while plenty of tools use them, some tasks still complex to perform by non-expert users, such as finding, accessing, using their related OGC Web Services (OWS). One the main reasons for these challenges is associated with semantic heterogeneity within services. This entails a lack proper descriptions re...

The Soil and Water Assessment Tool (SWAT) is a widely used hydrological model that produces several useful outputs (e.g. evapotranspiration, soil moisture, aquifer recharge, river discharge) as text files. Currently, visualizing and publishing SWAT outputs as geospatial data requires a lot of time and repetitive processing steps. Moreover, data used and produced are often not interoperable and ...

The Open GIS Consortium (OGC) has proposed a standard for the software architecture of geographic information systems (GIS) in order to enable interoperability among different GIS products. The so-called Abstract Model does not support spatial constraints yet, although most of the later proposals of GIS conceptual data models already do. This paper presents an extension of OGC’s Abstract Model ...

The topological operators defined in the spatial schemata of ISO and OGC for vector geometries can also be applied to raster geometries. This principle ability is investigated here for its semantic implications. From a user’s perspective, topological operators should be applicable to features in any representation and any resolution with a predictable behavior. The conditions and requirements f...

Sensor Web Enablement (SWE) is a consistent standardization e ort of the Open Geospatial Consortium (OGC) to cope with an environment of pervasive sensor networks. The standards suite is web service centric and de nes a number of XML schemas to be used in information exchange. Here we report about an experiment to replace a conventionally programmed web service with one which uses a semantic ne...