What is ancient geography find it impossible to measure the relative position of places acuurately?
Answers
The Importance of Error, Accuracy, and Precision
Until quite recently, people involved in developing and using GIS paid little attention to the problems caused by error, inaccuracy, and imprecision in spatial datasets. Certainly, there was an awareness that all data suffers from inaccuracy and imprecision, but the effects on GIS problems and solutions was not considered in great detail. Major introductions to the field such as C. Dana Tomlin's Geographic Information Systems and Cartographic Modeling (1990), Jeffrey Star and John Estes's Geographic Information Systems: An Introduction (1990), and Keith Clarke's Analytical and Computer Cartography (1990) barely mention the issue.
This situation has changed substantially in recent years. It is now generally recognized that error, inaccuracy, and imprecision can "make or break" many types of GIS projects. That is, errors left unchecked can make the results of a GIS analysis almost worthless.
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