[R] how do I get the legend?

[casperyc]

http://en.wikipedia.org/wiki/Binomial_distribution Bino 

Hi there,

How can I get the legend in the probability density plot in that 
http://en.wikipedia.org/wiki/File:Binomial_distribution_pmf.svg wiki page ?

and the cumalative plot as well?

====================================
# Binomial Distribution
x=0:40
plot(sin,ylim=c(0,.20),xlim=c(0,40),type='n',xlab="n",ylab="")
points(dbinom(x,20,0.5))
points(dbinom(x,20,0.7),col=2)
points(dbinom(x,40,0.5),col=3)
====================================

Thanks.

-- 
View this message in context: http://n4.nabble.com/how-do-I-get-the-legend-tp1563309p1563309.html
Sent from the R help mailing list archive at Nabble.com.