flea {GGally}

Historical data used for classification examples.

Description

This data contains physical measurements on three species of flea beetles.

Usage

data(flea)

Format

A data frame with 74 rows and 7 variables

Details

• species Ch. concinna, Ch. heptapotamica, Ch. heikertingeri

• tars1 width of the first joint of the first tarsus in microns

• tars2 width of the second joint of the first tarsus in microns

• 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

References

Lubischew, A. A. (1962), On the Use of Discriminant Functions in Taxonomy, Biometrics 18:455-477.