R color scatter plot points based on values

Question

I am able to plot a scatter plot and color the points based on one criteria, i.e. I can color all points >=3 as red and the remainder as black. I would love to be able to co

Answer 1

Also it'd work to just specify ifelse() twice:

plot(pos,cn, col= ifelse(cn >= 3, "red", ifelse(cn <= 1,"blue", "black")), ylim = c(0, 10))