[R] Using key.opts in Ecdf/labcurve (Hmisc package)

[Richard.Cotton at hsl.gov.uk]

I'm presumably missing something very obvious, but how does one use the 
key.opts argument in labcurve (via Ecdf)?

In this example, I want the key to be big and have a blue background, but 
it isn't and doesn't.

ch <- rnorm(1000, 200, 40)
sex <- factor(sample(c('female','male'), 1000, TRUE))
Ecdf(~ch, group=sex, label.curves=list(keys=c("f", "m"), 
key.opts=list(cex=3, background="blue")))

Regards,
Richie.

Mathematical Sciences Unit
HSL


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