Acta Stereologica

0351-580X

 

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Pamela J. Davy & Anthony J. Jakeman

The relative efficiency of point count estimators of areal cover

(Volume 3 (1984) — Number 1 - May 1984)
Article
Open Access

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Abstract

The efficiency of linear point counts for the estimation of feature area in a two-dimensional matrix is investigated. With the line intercept method providing a reference estimator, simple formulae are derived to obtain the increase in error for point count estimators over the same length and the number of counts required to achieve the same variance. In an application to the estimation of areal cover in an arid grassland region, the formulae are seen to be a valuable aid in determining the precise spacing and number of grid points required to achieve a specified accuracy.

Para citar este artículo

Pamela J. Davy & Anthony J. Jakeman, «The relative efficiency of point count estimators of areal cover», Acta Stereologica [En ligne], Volume 3 (1984), Number 1 - May 1984, 3-10 URL : https://popups.uliege.be/0351-580x/index.php?id=3901.

Acerca de: Pamela J. Davy

Department of Statistics, IAS and Centre for Resource and Environmental Studies, Australian National University Canberra ACT 2600, Australia

Acerca de: Anthony J. Jakeman

Department of Statistics, IAS and Centre for Resource and Environmental Studies, Australian National University Canberra ACT 2600, Australia