User interface design for two dimensional polygonally encoded Geological Survey maps

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Author
Ammann, Joann Marie
Date
1986-06Advisor
Zyda, Michael J.
Second Reader
McGhee, Robert B.
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Show full item recordAbstract
This study presents an overview of a cartographic processing pipehne for the
generation and maintenance of polygonally encoded data bases from published
U.S. Geological Survey maps. The focus of this research centers on the
development of an interactive editing system. The editor, serving as the final step
in the overall project, provides the user with the capability to correct and modify
dated topographic characteristics. A variety of processing and digitizer induced
errors introduced into the data base from previous utility steps can also be
corrected. Included is a discussion on the internal indexing scheme used for
managing revisions and the techniques and algorithms for updating the data
bases.