Grid Geospatial Information Service (Grid GIS) system aims to study and develop grid-based uniform spatial information access and analysis system. Data resources of Grid GIS include not only original and traditional GIS data but remotely sensed data. Analysis function is made up of not only single spatial information access but complex and quick data processing. The Grid GIS system can provide ...

The evaluation of land quality plays an important role in the study of land resources. Some software of GIS was applied to evaluate land quality in recent years. There is some limitation in Appling GIS to evaluate land quality directly. GIS combined with MCE (Multi-Criteria Evaluation) can eliminate limitation existing in using GIS singly. In this thesis key technology of evaluating land qualit...

Geographic information systems (GIS), a technology for spatial data analysis which is widely used in geology, appears to have significant potential in construction applications. GIS as well as computer-aided design (CAD) are two computerized systems widely used in engineering design and spatial management. Currently, CAD is the most popular tool in geometric model creation. However, due to the ...

The creation of a GIS database can cost more than the GIS hardware and software itself. Although it takes several years to create, the information used in the databases of GIS represents the status of the world instantly. GIS databases must appropriately be organized and constantly be updated to make better use. In this study, methods were investigated with regard to updating of GIS databases t...

Geographical Information System (GIS) is an effective tool for planning and management of a metropolitan city. In developing countries like India, metropolitan governments, planning authorities and parastatals (viz. Water Supply Board, Transport Corporation etc.) have executed GIS projects independently. In recent years, many municipalities in the World have switched from stand-alone GIS system...

Maps have been major sources of information for a long time. Geographic Information Systems (GIS) use digital data, elevation models, satellite images, expert systems and related open source information for planning, detection, evaluation and decision making. Maps as well as GIS use spatial attributes of data in particular. Spatial Information derived is a feature of both data and language to c...

Commercially available scheduling tools such as Primavera and Microsoft Project fail to provide information pertaining to the spatial aspects of construction project. A methodology using geographical information systems (GIS) is developed to represent spatial aspects of the construction progress graphically by synchronizing it with construction schedule. The spatial aspects are depicted by 3D m...

The focus of this editorial is on the potential of spatial thinking in teaching, both within spatially-enabled disciplines such as geography, environmental and earth science, and more broadly within the sciences and humanities. Although a persuasive argument has been made for the value of spatial thinking and GIS within a broader research context (e.g., Goodchild & Janelle, 2004 for the social ...

The spatial relationships plays an important role in GIS spatial data modeling, spatial query and spatial analysis etc. From the cognitive view, we represent and apply the information of relationships between spatial objects in the real world in computer system, study the fuzzy extension about description of spatial relationships at the base. Guided the spatial query the paper makes the model o...

This article analyzes the definition of spatial query and the requirements of query languages in GIS, and discusses the grammar structures, spatial predicates of GeoSQL, the query language of a prototype objectoriented GIS, YH-GIS. In the last part, some query instances of GeoSQL are presented.