brambles
data frame has 823 rows and 3 columns.The location of living bramble canes in a 9m square plot was recorded. We take 9m to be the unit of distance so that the plot can be thought of as a unit square. The bramble canes were also classified by their age.
data(brambles)
Diggle, P.J. (1983) Statistical Analysis of Spatial Point Patterns. Academic Press.