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1.	Rajala, Tuomas, et al. (författare) A review on anisotropy analysis of spatial point patterns 2018 Ingår i: Spatial Statistics. - : Elsevier BV. - 2211-6753. ; 28, s. 141-168 Forskningsöversikt (refereegranskat)abstract A spatial point pattern is called anisotropic if its spatial structure depends on direction. Several methods for anisotropy analysis have been introduced in the literature. In this paper, we give an overview of nonparametric methods for anisotropy analysis of (stationary) point patterns in ℝ2 andℝ3. We discuss methods based on nearest neighbour and second order summary statistics as well as spectral and wavelet analysis. All techniques are illustrated on both a clustered and a regular example. Finally, we discuss methods for testing for isotropy as well as for estimating preferred directions in a point pattern.

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