spatstat.data (version 3.1-2)

paracou: Kimboto trees at Paracou, French Guiana

Description

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.

Usage

data(paracou)

References

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

Examples

  if(require(spatstat.geom)) {
plot(paracou, cols=2:3, chars=c(16,3))
  }