A simple positional accuracy measure for linear features

Michael F. Goodchild

doi:10.1080/136588197242419

A simple positional accuracy measure for linear features

1997-04-01

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M

Michael F. Goodchild *

G

Gary J. Hunter

DOI：10.1080/136588197242419

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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.

A simple positional accuracy measure for linear features

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