This is the Lansing Woods Tree data set and an arbitrary polygon boundary within unit square.
lansing is an R
x, y, marks
polyb is an R matrix with
The Lansing Woods tree data set and the arbitrary polygon are
provided here for the demonstration of the basic
usage of this package. See Section Examples in
Lansing Woods trees from Lansing Woods, Clinton County, Michigan USA, including hickories, maples, and oaks.
Gerrard, D.J. (1969) Competition quotient: a new measure of the competition affecting individual forest trees. Research Bulletin 20, Agricultural Experiment Station, Michigan State University.
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