Vector data structure conversion at the EROS Data Center

Abstract

With the increasing prevalence of GIS systems and the processing of spatial data, conversion of data from one system to another has become a more serious problem.This report describes the approach taken to arrive at a solution at the EROS Data Center.The report consists of a main section and a number of appendices.The methodology is described in the main section, while the appendices have system specific descriptions.The overall approach is based on a central conversion hub consisting of a relational database manager and associated tools, with a standard data structure for the transfer of spatial data.This approach is the best compromise between the two goals of reducing the overall interfacing effort and producing efficient system interfaces, while the tools can be used to arrive at a progression of interface sophistication ranging from toolbench to smooth flow.The appendices provide detailed information on a number of spatial data handling systems and data structures and existing interfaces as well as interfaces developed with the described methodology.

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