[R] Error in plotmath

[Peter Ehlers]

On 2011-07-31 11:25, Frank Harrell wrote:
> Under
>
> platform       x86_64-pc-linux-gnu
> arch           x86_64
> os             linux-gnu
> system         x86_64, linux-gnu
> status
> major          2
> minor          13.1
> year           2011
> month          07
> day            08
> svn rev        56322
> language       R
> version.string R version 2.13.1 (2011-07-08)
>
> I get a double quote mark in place of<= in the y-axis label when I run the
> following.
>
> set.seed(6)
> x<- rnorm(30, 100, 20)
> xs<- seq(50, 150, length=150)
> cdf<- pnorm(xs, 100, 20)
> plot(xs, cdf, type='l', ylim=c(0,1),
>       xlab=expression(x),
>       ylab=expression(paste("Prob[", X<= x, "]")))
> lines(ecdf(x), cex=.5)
>
> The problem also occurs if I use instead ylab=expression(prob(X<= x)))

Does the problem occur if you use ylab=expression("Prob[X" <= "x]")?

Peter Ehlers

>
> All is well if I remove "=" but I need<=.
>
> Frank
>
> -----
> Frank Harrell
> Department of Biostatistics, Vanderbilt University
> --
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