electrode {Flury}R Documentation

Electrode Manufacture

Description

Comparison of eletrode measurements from two machines

Usage

data(electrode)

Format

A data frame with 100 observations, 50 from each machine, on the following 5 variables.

Machine
a factor with levels 1 2
X1
Total diameter
X2
Probe diameter
X3
Total height
X4
Basal height
X5
Internal diameter

Details

See Figure 5.3.3 in Flury 1997, or the orginal figure 7.20 in Flury and Riedwyl for a better explaination of the five measurements. The actual data presented are linear transformations of the original variables (for reasons of commercial confidentiality).

Source

Flury, B. and H. Riedwyl (1988) Multivariate Statistics: A practical approach. London: Chapman and Hall

References

Flury, B.D. (1997) A First Course in Multivariate Statistics New York: Springer

Examples

data(electrode)
## Not run: 
pairs(apply(electrode[,-1], 2, jitter, 2),
    lower.panel = function(x, y){ points(x, y,
    pch = unclass(electrode[,1]),
    col = as.numeric(electrode[,1]))},
    main = "Pairwise scatter plots for Electrode data")
## End(Not run)

[Package Flury version 0.1-2 Index]