Volume 79, Issue 2
Original Article

Global envelope tests for spatial processes

Mari Myllymäki

Corresponding Author

E-mail address: mari.myllymaki@luke.fi

Natural Resources Institute Finland (Luke), Vantaa, Finland

Address for correspondence: Mari Myllymäki, Natural Resources Institute Finland (Luke), PO Box 18, FI‐01301 Vantaa, Finland. E‐mail: mari.myllymaki@luke.fiSearch for more papers by this author
Tomáš Mrkvička

University of South Bohemia, České Budějovice, Czech Republic

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Pavel Grabarnik

Institute of Physico‐Chemical and Biological Problems in Soil Science, Pushchino, Russia

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Henri Seijo

Aalto University, Espoo, Finland

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First published: 20 March 2016
Citations: 54

Summary

Envelope tests are a popular tool in spatial statistics, where they are used in goodness‐of‐fit testing. These tests graphically compare an empirical function T(r) with its simulated counterparts from the null model. However, the type I error probability α is conventionally controlled for a fixed distance r only, whereas the functions are inspected on an interval of distances I. In this study, we propose two approaches related to Barnard's Monte Carlo test for building global envelope tests on I: ordering the empirical and simulated functions on the basis of their r‐wise ranks among each other, and the construction of envelopes for a deviation test. These new tests allow the a priori choice of the global α and they yield p‐values. We illustrate these tests by using simulated and real point pattern data.

Number of times cited according to CrossRef: 54

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