Positional accuracy and measurement error in digital databases of land use: an empirical study
- 1 October 1990
- journal article
- research article
- Published by Taylor & Francis in International Journal of Geographical Information Science
- Vol. 4 (4) , 385-398
- https://doi.org/10.1080/02693799008941554
Abstract
This paper discusses the issues of positional accuracy and measurement error in the context of a large empirical study of landscape change in England and Wales. The epsilon band model of digitizing accuracy is used to make estimates of the levels of positional uncertainty and measurement error that is due to digitizing polygon outlines. The degree of error expected had the same polygons been captured in raster format is then determined. These results prompt a general discussion of the nature of error in spatial databases.Keywords
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