[R] square and points on the same figure

[Chuck Cleland]

Sam R. Smith wrote:
> Hi,
> I have the following code to 
> randomly generate the 
> points:
> csr <-function(n=60){
> x=runif(n)
> y=runif(n)
> f=cbind(x,y)
> }
> plot(csr())
> 
> I wonder how to code to draw a square centering on 0.5,0.5; with the length of each side to be 0.3 on the same figure with these plotted points?

?symbols

symbols(x=0.5, y=0.5, squares=c(0.3), add=TRUE)

> Thanks,
> Sam
> 
> 
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Chuck Cleland, Ph.D.
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