Second order analysis of geometric anisotropic point processes revisited
Artikel i vetenskaplig tidskrift, 2020

Various methods for directional analysis of spatial point patterns have been introduced in the literature. In this paper, we formulate a unifying framework for methods based on integral transforms of the second order product density. Examples include directional versions of Ripley's K-function, wavelet transforms, and spectral analysis. Furthermore, we propose an additional method based on the projection of the Fry points of the point pattern on the unit sphere. This method solves some of the practical problems appearing in the application of the integral transform. In particular, it can be easily applied in 3D and provides a definition of an isotropy test without the need of replicated data. The method is evaluated in a simulation study.



Anisotropy test

Fry plot

Functional summary statistics

Spectral analysis


M. Sormani

Fraunhofer-Institut fur Techno- und Wirtschaftsmathematk

Technische Universität Kaiserslautern

Claudia Redenbach

Technische Universität Kaiserslautern

Aila Särkkä

Chalmers, Matematiska vetenskaper, Tillämpad matematik och statistik

Tuomas Rajala

Naturresursinstitutet (Luke)

Spatial Statistics

2211-6753 (ISSN)

Vol. 38 100456


Annan data- och informationsvetenskap

Datavetenskap (datalogi)

Datorseende och robotik (autonoma system)



Mer information

Senast uppdaterat