Plotting helper function to add letters indicating statistically similar parings.

dunn.letters(levels, x, y, labels, col2 = col2, cex2 = cex2)

Arguments

levels: The number of groups
x: a list of x variables
y: a list of y variables
labels: what text do you want to include
col2: color of the text label
cex2: size of label

Value

Helper function to add letters indicating statitcal significance.

Note

Use in combination with dunn.test::dunn.test() and rcompanion::cldList()

Examples

if (FALSE) {
library(dunn.test)
library(rcompanion)

set.seed(123)
data=data.frame(group=c(rep("alpha",5),rep("beta",5),rep("delta",5)),value=c(runif(5,max=2),runif(5,min=4,max=10),runif(5,min=12,max=30)))

DT=with(data,dunn.test(value,group))
rslt=toupper(cldList(P.adjusted ~ comparison,data=DT,threshold = 0.05)$Letter)
boxplot(value~group,data,ylim=c(0,40))
dunn.letters(3,1:3,c(2,10,30),rslt,"red",1)
}