Principles of logic and the use of digital geographic information systems

Abstract

Digital geographic information systems allow many different types of data to be spatially and statistically analyzed.Logical operations can be performed on individual or multiple data planes by algorithms that can be implemented in computer systems.Users and creators of the systems should fully understand these operations.This paper describes the relationships of layers and features in geographic data bases and the principles of logic that can be applied by geographic information systems and suggests that a thorough knowledge of the data that are entered into a geographic data base and of the logical operations will produce results that are most satisfactory to the user.Methods of spatial analysis are reduced to their primitive logical operations and explained to further such understanding.

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