data(iris) data(iris3)
iris is a data frame with 150 cases (rows) and 5 variables
(columns) named Sepal.Length, Sepal.Width,
Petal.Length, Petal.Width, and Species.
iris3 gives the same data arranged as a 3-dimensional array
of size 50 by 4 by 3, as represented by S-PLUS. The first dimension
gives the case number within the species subsample, the second the
measurements with names Sepal L., Sepal W.,
Petal L., and Petal W., and the third the species.
The data were collected by Edgar Anderson (1935). The irises of the Gaspe Peninsula, Bulletin of the American Iris Society, 59, 2ס.