Exploratory Graphs for Two Factor Designs — twoway.plots • PASWR

Function creates side-by-side boxplots for each factor, a design plot (means), and an interaction plot.

twoway.plots(Y, fac1, fac2, COL = c("#A9E2FF", "#0080FF"))

Arguments

Y	response variable
fac1	factor one
fac2	factor two
COL	a vector with two colors

See also

Examples

# Figure 11.25
Microamps <- c(280, 290, 285, 300, 310, 295, 270, 285, 290, 230,
235, 240, 260, 240, 235, 220, 225, 230)
Glass <- factor(c(rep("Glass I", 9), rep("Glass II", 9)))
Phosphor <- factor((rep(c(rep("Phosphor A", 3), rep("Phosphor B", 3),
rep("Phosphor C", 3)), 2)))
twoway.plots(Microamps,Glass,Phosphor)
#> Error in plot.new(): figure margins too large
rm(Microamps, Glass, Phosphor)