This dataset is a point pattern of adult and juvenile Kimboto trees (Pradosia cochlearia or P. ptychandra) recorded at Paracou in French Guiana. See Flores (2005).
The dataset paracou
is a point pattern
(object of class "ppp"
) containing the spatial coordinates
of each tree, marked by age (a factor with levels adult
and
juvenile
. The survey region is a rectangle
approximately 400 by 525 metres. Coordinates are given in metres.
Note that the data contain duplicated points (two points at the
same location). To determine which points are duplicates,
use duplicated.ppp
.
To remove the duplication, use unique.ppp
.
data(paracou)
Flores, O. (2005) Determinisme de la regeneration chez quinze especes d'arbres tropicaux en foret guyanaise: les effets de l'environnement et de la limitation par la dispersion. PhD Thesis, University of Montpellier 2, Montpellier, France.
Picard, N, Bar-Hen, A., Mortier, F. and Chadoeuf, J. (2009) The multi-scale marked area-interaction point process: a model for the spatial pattern of trees. Scandinavian Journal of Statistics 36 23--41
# NOT RUN {
plot(paracou, cols=2:3, chars=c(16,3))
# }
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