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Surface area processing in GIS
Sandeep N Kundu IFGI, University of Münster, 48149 Münster, Germany Phone: 0049 251 8330058 Fax: 0049 251 8339763 Email: skundu@ifgi.uni-muenster.de  Biswajeet Pradhan Asian Institute of Medicine, Science & Technology, 08000, Sungai Petani, Kedah Darul Aman, MALAYSIA Phone: 00604 445 2233 Ext. (222) Fax: 00604 442 2887 Email: biswajeet@aimst.edu.my (presenting author)
Abstract
Geographical Information Systems (GIS) provides a framework for modelling real world at different map scales through projection systems and spatial data models (raster or vector). Processing functionalities have been deemed fundamental to such a modelling environment and are further being developed for applications on a real-time basis (Berry, 1987). Distance and area processing in GIS play an important role in the decision making process. It is therefore important to evaluate techniques by the GIS model, to obtain reliable distance and area measurements. Traditionally, distance and area measurements from field surveying methods were entered in the feature attribute table. It is desirable to replace this time and cost consuming practice through accurate processing of spatial features in GIS. The current article discusses and compares techniques for real world area approximation within GIS. |