glass.grp {chemometrics}

glass types of the glass data

Description

13 different measurements for 180 archaeological glass vessels from different groups are included. These groups are certain types of glasses.

Usage

data(glass.grp)

Format

The format is: num [1:180] 1 1 1 1 1 1 1 1 1 1 ...

Details

This is a vector with 180 elements referring to the groups.

Source

Janssen, K.H.A., De Raedt, I., Schalm, O., Veeckman, J.: Microchim. Acta 15 (suppl.) (1998) 253-267. Compositions of 15th - 17th century archaeological glass vessels excavated in Antwerp.

References

K. Varmuza and P. Filzmoser: Introduction to Multivariate Statistical Analysis in Chemometrics. CRC Press, Boca Raton, FL, 2009.

Examples

data(glass.grp)
str(glass.grp)