beetle: Six Measurements of Beetles

In Yamm: Multivariate Methods Based on Projections and Related Concepts

Six Measurements of Beetles

Description

Multivariate dataset containing six measurements on each of three species of flea-beetles: concinna, heptapotamica, and heikertingeri. The original data set contains one column identifying the species of the observations, which is irrelevant and has been deleted here.

Usage

data("beetle")

Format

A data frame with 74 observations on the following 6 variables.

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

References

Cook, D.H. and Swayne, D.F. (2007). Interactive and Dynamic Graphics for Data Analysis: With Examples Using R and GGobi. http://ggobi.org/book/data/flea.xml

Examples

data(beetle)

Yamm documentation built on May 20, 2022, 5:06 p.m.