Warning error of "plot.new has not been called yet" when attempting to plot ecdf for a variable

r plot ecdf
McIlwaine picture McIlwaine · Feb 14, 2013 · Viewed 22.8k times · Source

I am having difficulty plotting an ECDF function for a variable. The simple code below provides an example;

A = rnorm(100)
plot(ecdf(A),
     abline(v=c(-1,1,1.5)))

When I attempt to plot the function with vertical lines the warning message

Error in int_abline(a = a, b = b, h = h, v = v, untf = untf, ...) :
plot.new has not been called yet

appears.

I have searched a number of sources but I have not been able to identify what mistake I am making. If anyone could provide information on how to plot these ecdf plots and then add vertical lines I would greatly appreciate it.

Thanks.

Answer

Huub Hoofs picture Huub Hoofs · Feb 14, 2013

Everything is correct except that you first have to plot the graph

plot(ecdf(A))

And then you can add the abline. As Roland said, abline is not a function of plot (in contrast to ggplot2)

abline(v=c(-1,1,1.5)))

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