The data give the locations of Japanese black pine saplings in a square sampling region in a natural forest. The observations were originally collected by Numata (1961).
These data are used as a standard example in the textbook of Diggle (2003); see pages 1, 14, 19, 22, 24, 56–57 and 61.
An object of class
representing the point pattern of tree locations
in a 5.7 x 5.7 metre square, rescaled to the unit square
and rounded to two decimal places.
ppp.object for details of the format of a
point pattern object.
Diggle (2003), obtained from Numata (1961)
Diggle, P.J. (2003) Statistical Analysis of Spatial Point Patterns. Arnold Publishers.
Numata, M. (1961) Forest vegetation in the vicinity of Choshi. Coastal flora and vegetation at Choshi, Chiba Prefecture. IV. Bulletin of Choshi Marine Laboratory, Chiba University 3, 28–48 (in Japanese).
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