Troubles with plot margins

Marco Taboga wrote:

I am trying to set the margins of a plot with mai and I get a strange
output.
I write:
plot(rnorm(1000),type="l",mai=c(1,1,1,1))
and what I get is a plot with unchanged margins and a column of four 1
plotted on the top margin.

In plot(..., mai = ...) , R thinks mai is short for "main" and sets c(1,
1, 1, 1) as the main title.

What you should try:
 par(mai = rep(1, 4))
 plot(...)


Uwe
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