[R] How to plot this simple step function?

Bornin1992 ian at mcparland.ca
Thu Jan 17 08:32:50 CET 2013

Thank you for your reply!

When I copy and paste the code into the Console, I receive several errors!

1) Error in plot(x, y, type = "n") : object 'x' not found
> segments(x[-length(x)],y[-length(x)],x[-1],y[-length(x)])
Error in segments(x[-length(x)], y[-length(x)], x[-1], y[-length(x)]) : 
  object 'x' not found
2)Error in points(x[-length(x)], y[-length(x)], pch = 16) : 
  object 'x' not found
3) Error in points(x[-1], y[-length(x)], pch = 1) : object 'x' not found.

What am I doing wrong? :'(

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