japanesepines: Japanese Pines Point Pattern

Description Usage Format Source References


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 "ppp" 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.

See 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).

spatstat/spatstat.data documentation built on Oct. 4, 2018, 3:12 p.m.