cluster.datasets (version 1.0-1)

british.butterfly.appearance: Hartigan (1975) Times of Appearance of British Butterflies

Description

The table defines the metamorphisis sequences of British butterflies. This is Table 7.6 in Chapter 7 of Hartigan (1975) on page 150.

Usage

data(british.butterfly.appearance)

Format

A data frame with 27 observations on the following 13 variables.

name

a character vector for the species

jan

a factor for January occurrences with levels I L O P

feb

a factor for February occurrences with levels I L O P

mar

a factor for March occurrences with levels I L O P

apr

a factor for April occurrences with levels I L LP O OL P PI

may

a factor for May occurrences with levels I L LI LP LPI P PI

jun

a factor for June occurrences with levels I IL IOL L LI LP LPI P PI

jul

a factor for July occurrences with levels I L LI LP LPI O P PI

aug

a factor for August occurrences with levels I L LI LPI O P PI

sep

a factor for September occurrences with levels I L LI LP LPI O P PI

oct

a factor for October occurrences with levels I L LP LPI O P

nov

a factor for November occurrences with levels I L O P

dec

a factor for December occurrences with levels I L O P

Source

Ford, T. L. E. (1963). Practical Entomology, Warne, London, p. 181. SPAETH2 Cluster Analysis Datasets http://people.sc.fsu.edu/~jburkardt/datasets/spaeth2/spaeth2.html

Details

Hartigan suggests using this data set to test the ditto algorithm.

References

Hartigan, J. A. (1975). Clustering Algorithms, John Wiley, New York.

Examples

data(british.butterfly.appearance)