Flea-beetles data

Description

Six measurements on each of three species of flea-beetles: concinna, heptapotamica, and heikertingeri.

Usage

data(flea)

Format

A data frame with 74 observations on the following 7 variables.

species

a factor with levels Concinna, Heikert., and Heptapot.

tars1

width of the first joint of the first tarsus in microns (the sum of measurements for both tarsi).

tars2

the same for the second joint.

head

the maximal width of the head between the external edges of the eyes in 0.01 mm.

aede1

the maximal width of the aedeagus in the fore-part in microns.

aede2

the front angle of the aedeagus (1 unit = 7.5 degrees).

aede3

the aedeagus width from the side in microns.

Source

Lubischew, AA "On the Use of Discriminant Functions in Taxonomy", Biometrics, Dec. 1962, pp. 455-477.

References

Dianne Cook and Deborah F. Swayne, Interactive and Dynamic Graphics for Data Analysis: With Examples Using R and GGobi. URL: http://www.ggobi.org/book/data/flea.xml

Examples

data(flea)

Results