saunders {untb} | R Documentation |
A dataframe of 40 holdfasts and a species inventory for each
(saunders
); also two data.frame.count
objects:
one for the 20 exposed holdfasts (saunders.exposed
) and one for
the 20 sheltered holdfasts (saunders.sheltered
); and three
count
objects: saunders.tot
, saunders.exposed
, and
saunders.sheltered
.
data(saunders)
Dataset saunders
is a data frame with 40 observations on 177
variables. The observations are 40 holdfasts and the variables are,
with the exception of the first one, the numbers of each of 176
species living there. The first variable is a Boolean, indicating
whether or not that holdfast was exposed (TRUE
) or sheltered
(FALSE
).
Summary datasets saunders
, saunders.exposed
, and
saunders.sheltered
are objects of class count
that
are the species abundance for sheltered holdfasts, exposed
holdfasts, and the entire dataset.
It is not entirely obvious how to derive the summary datasets from the
saunders
dataframe. Use function extractor()
for this.
Data supplied by Justine Saunders
data(saunders) plot(saunders.sheltered.tot, uncertainty=TRUE, n=1) preston(saunders.tot)