Fernando,

¿Could you send your sessionInfo()?

Daniel Merino



2013/11/26 fernando <faiube@gmail.com>

> Hi Mark,
>
> An example would be the following code
>
> x <- c("1jan1997", "2jan1997", "3jan1997", "4jan1997")
> y <- c(-.3, 0.2, -0.2, 0.3)
> date <- as.Date(x, "%d%b%Y")
> plot(date,y, type="l", ylim=c(-0.32,0.32))
> segments(1,-.2,4,-.2) # I want a segment from Thu through Sat at y = -0.2
>
> Thanks in advance.
>
> Cheers
>
>
>
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-- 
Daniel

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