| quercusvm {ecespa} | R Documentation |
Alive and dead oak trees
Description
Locations of alive and dead oak trees (Quercus robur) in a secondary wood in Urkiola Natural Park (Basque country, north of Spain). This is part of a more extensive dataset collected and analysed by Laskurain (2008). The coordinates of the trees are given in meters.
Usage
data(quercusvm)Format
An object of class "ppp" representing the point pattern of tree locations. Entries include
- x
Cartesian x-coordinate of tree.
- y
Cartesian y-coordinate of tree.
- marks
factor with two levels indicating the status of each tree (1 = "alive", 0 = "dead").
See ppp for details of the format of a ppp object.
References
Laskurain, N. A. (2008) Dinámica espacio-temporal de un bosque secundario en el Parque Natural de Urkiola (Bizkaia). Tesis Doctoral. Universidad del País Vasco /Euskal Herriko Unibertsitatea.