r increase the font size of values in dendogram plot

Question

How can I can increase the font size of labels, x2, x1, x3, x4 in the plot produced based on the function varclus

set.seed(1)
x1 <- rnorm(200)
x2 <- rnorm(200)
x3 <- x1 + x2 + rnorm(200)
x4 <- x2 + rnorm(200)
x <- cbind(x1,x2,x3,x4)
v <- varclus(x, similarity="spear")  # spearman is the default anyway
v    # invokes print.varclus
print(round(v$sim,2))
plot(v)

Thanks.

Answer 1

plot.varclus internally calls plot.hclus as you can see by running:

getS3method("plot",class = 'varclus')

and it passes along the labels argument (and the ... argument(s)). this includes a font scaling argument cex

so try:

plot(v, 
     cex = 1.5)