RBPottery: Romano-British Pottery

Description Usage Format Details Source References Examples

Description

Results of chemical analyses of 48 specimens of Romano-British pottery from 5 sites in 3 regions.

Usage

1
data("RBPottery")

Format

A data frame with 48 observations on the following 12 variables.

ID

Sample ID

Kiln

Kiln: Gloucester, Llanedeyrn, Caldicot, Islands Thorns, and Ashley Rails

Region

Region: Gloucester, Wales, and New Forest

Al2O3

Percentage aluminum trioxide

Fe2O3

Percentage Iron trioxide

MgO

Percentage magnesium oxide

CaO

Percentage calcium oxide

Na2O

Percentage sodium oxide

K2O

Percentage potassium oxide

TiO2

Percentage titanium dioxide

MnO

Percentage manganese oxide

BaO

Percentage barium oxide

Details

Results of chemical analyses of 48 specimens of Romano-British pottery published by Tubb, et al. (1980). The numbers are the percentage metal oxide. "Kiln" indicates at which kiln site the pottery was found. The kiln sites come from three regions (1=Gloucester, (2=Llanedeyrn, 3=Caldicot), (4=Islands Thorns, 5=Ashley Rails)). The data were scanned from Table 2.2 in Baxter (2003, p. 21) and preserve three probable typographical errors in the original publication. Those errors are the values for TiO2 in line 4 (sample GA4), for MnO in line 35 (sample C13), and for K2O in line 36 (sample C14). Versions of these data are also available as Pottery in package car, pottery in package HSAUR, and Pottery2 in package heplots.

Source

Baxter, M. J. 2003. Statistics in Archaeology. Arnold.

Tubb, A., A. J. Parker, and G. Nickless. 1980. The Analysis of Romano-British Pottery by Atomic Absorption Spectrophotometry. Archaeometry 22: 153-71.

References

Carlson, David L. 2017. Quantitative Methods in Archaeology Using R. Cambridge University Press, pp 247-255, 335-342.

Examples

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data(RBPottery)
print(aggregate(RBPottery[, -c(1:3)], list(Region=RBPottery$Region), mean), digits=2)
plot(Na2O~CaO, RBPottery, pch=as.numeric(Region)-1)
legend("topright", levels(RBPottery$Region), title="Region", pch=0:2)

Example output

      Region Al2O3 Fe2O3  MgO   CaO  Na2O K2O TiO2    MnO   BaO
1 Gloucester    17   7.4 1.84 0.942 0.348 3.1 0.90 0.0717 0.017
2      Wales    12   6.3 4.71 0.214 0.226 4.0 0.69 0.1386 0.017
3 New Forest    18   1.6 0.64 0.039 0.051 2.0 1.02 0.0032 0.016

archdata documentation built on Feb. 19, 2018, 5:02 p.m.