A simple positional accuracy measure for linear features

M. F. Goodchild, G. J. Hunter

Research output: Contribution to journalArticlepeer-review

263 Scopus citations


In this paper we propose a simple technique for assessing the positional accuracy of digitized linear features. The approach relies on a comparison with a representation of higher accuracy, and estimates the percentage of the total length of the low accuracy representation that is within a specified distance of the high accuracy representation. The approach deals successfully with three deficiencies of other methods: it is statistically based; is relatively insensitive to extreme outliers; and does not require matching of points between representations. It can be implemented using standard functions and a standard scripting language in any raster or vector GIS. We present the results of a test using data from the Digital Chart of the World.

Original languageEnglish (US)
Pages (from-to)299-306
Number of pages8
JournalInternational Journal of Geographical Information Science
Issue number3
StatePublished - 1997
Externally publishedYes

ASJC Scopus subject areas

  • Information Systems
  • Geography, Planning and Development
  • Library and Information Sciences


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