Greetings helpRs --

 

I would like to use plot() to plot two cumulative distribution curves so
that a user of the plot can compare the distributions of the two
variables.  The following code draws two distributions separately, but I
cannot find the instruction necessary to add a second cumulative
distribution to the first one.

 

Any suggestion would be very welcome.

 

x1 <- sort(rnorm(1000,50,10))

x2 <- sort(rnorm(1000,40,8))

plot(x1,1:length(x1)/length(x1),type="l")

plot(x2,1:length(x2)/length(x2),type="l")

grid(col = "black")

 

Ben Fairbank

 


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