This famous (Fisher's or Anderson's) iris data set gives the measurements in centimeters of the variables sepal length and width and petal length and width, respectively, for 50 flowers from each of 3 species: “Iris setosa”, “I. versicolor”, and “I. virginica”.
'irisf' is a data frame with 150 observations with a factor indicating the species and four quantitative variables:
a factor with levels
Fisher, R. A. (1936) “The use of multiple measurements in taxonomic problems”. Annals of Eugenics, 7:179-188.
Anderson, E (1935) “The irises of the Gaspe Peninsula”, Bulletin of the American Iris Society, 59:2-5
Flury, B.D. (1997) A First Course in Multivariate Statistics, New York: Springer
'iris' in datasets, which is presents the same data, but with the species as the fifth column rather than the first
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