Change symbol size in R function plotrix::polar.plot()

Question

Is there a way to change the size of the plotted blue circles produced by:

library(plotrix)
polar.plot(1:36, seq(0,350,by=10), rp.type='s', point.col='blue')

Hopefully, there is some sizing parameter to this function.

Answer 1

cex seems to work. Try:

polar.plot(1:36, seq(0,350,by=10), rp.type='s', point.col='blue', cex = 3)