AntiqueFurniture {BiplotGUI}R Documentation

Antique furniture data set

Description

Microscopic measurements on tree species used to make Old-Cape furniture in South Africa between 1652 and 1900.

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.

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 eight variables measured on each sample 50 times over. The data are the mean measurements over the 50 repetitions.

Source

Swart JPJ (1985), Lauracea. Unpublished Masters thesis, Stellenbosch University, Stellenbosch, South Africa.

References

Burden M, Gardner S, Le Roux NJ, Swart JPJ (2001). ``Ou-Kaapse meubels en stinkhoutidentifikasie: Moontlikhede met kanoniese veranderlike-analise en bistippings.'' South African Journal of Cultural History, 15, 50–73.

Le Roux NJ, Gardner S (2005). ``Analysing your multivariate data as a pictorial: A case for applying biplot methodology?'' International Statistical Review, 73(3), 365–387

Examples

data(AntiqueFurniture)
# Paste the following into an interactive R session (without the ##):
## Biplots(Data = AntiqueFurniture[, -1], groups = AntiqueFurniture[, 1])

[Package BiplotGUI version 0.0-2 Index]