R: Flea-beetles

fleabeetles {DPpackage} | R Documentation

## Flea-beetles

### Description

This data set consider physical information of 74 male flea-beetles reported by Lubischew (1962). Information of three species (Ch. concinna, Ch. heptapotamica, and Ch. heikertingeri) is considered and 6 measurements on each flea-beetles.

### Usage

    data(fleabeetles)

### Format

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

`fjft`

  a numeric vector giving the width of the first joint of the first tarsus in microns (the sum of measurements for both tarsi)

`sjft`

  a numeric vector giving the width of the second joint of the first tarsus in microns (the sum of measurements for both tarsi)

`mwhbee`

  a numeric vector giving the maximal width of the head between the external edges of the eyes in 0.01 mm

`mwafp`

  a numeric vector giving the maximal width of the aedeagus in the fore-part in microns

`faa`

  a numeric vector giving the front angle of the aedeagus (1 unit = 7.5 degrees)

`awfs`

  a numeric vector giving the aedeagus width from the side in microns

`species`

  a numeric vector giving the species: 1=Ch. concinna, 2= Ch. heptapotamica, and 3=Ch. heikertingeri

### Source

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

### References

MacEachern, S.N., and Muller, P. (1998) Estimating Mixture of Dirichlet Process Models, Journal of Computational and Graphical Statistics, 7: 223-238.

### Examples

    data(fleabeetles)
    ## maybe str(fleabeetles) ; plot(fleabeetles) ...

[Package DPpackage version 1.1-7.4 Index]