BiplotGUI (version 0.0-7)

AntiqueFurniture: Antique furniture data set

Description

Microscopic measurements made on Old-Cape antique furniture. The furniture are made from three types of wood.

Usage

data(AntiqueFurniture)

Format

A data frame with 37 observations on the following 7 variables.

Species

The tree species. A factor with levels Obul, Oken, Opor.

VesD

Tangential vessel diameter in micrometres. A numeric vector.

VesL

Vessel element length in micrometres. A numeric vector.

FibL

Fibre length in micrometres. A numeric vector.

RayH

Ray height in micrometres. A numeric vector.

RayW

Ray width in micrometres. A numeric vector.

NumVes

The number of vessels per millimetre squared. A numeric vector.

Source

Swart, J.P.J. (1985). Lauracea. Unpublished Master's thesis, Stellenbosch University, Stellenbosch, South Africa.

Details

During the period 1652--1900, wood from both the indiginous Ocotea bullata ("Stinkwood") and the imported Ocotea perosa ("Imbuia") were used to make Old-Cape furniture in South Africa. The data set contains mean measurements made on such wood, together with a third species, Ocotea kenyensis. Twenty samples of Ocotea bullata (Obul), 10 samples of Ocotea perosa (Opor) and 7 samples of Ocotea kenyensis (Oken) were inspected microscopically, with six variables measured on each sample 50 times over. The data are the mean measurements over the 50 repetitions.

References

Burden, M., Gardner, S., Le Roux, N.J. and Swart, J.P.J. (2001). Ou-Kaapse meubels en stinkhoutidentifikasie: Moontlikhede met kanoniese veranderlike-analise en bistippings. South African Journal of Cultural History, 15, 50--73.

Le Roux, N.J. and Gardner, S. (2005). Analysing your multivariate data as a pictorial: A case for applying biplot methodology? International Statistical Review, 73(3), 365--387.

Examples

## Not run: Biplots(Data = AntiqueFurniture[, -1],
#         groups = AntiqueFurniture[, 1])## End(Not run)