Hi
I have a factor 'f' and a named list 'jj'.
I want names(jj) to match up with levels(f).
How do I use levels(f) to access elements of jj?
> f <- factor(c("pigs","pigs","slugs"))
> f
[1] pigs pigs slugs
Levels: pigs slugs
>
> jj <- list(pigs=1:10,slugs=1:3)
My attempts to produce jj$pigs all give errors:
> jj$levels(f)[1]
Error: attempt to apply non-function
> do.call("$",jj,levels(f)[1])
Error in if (quote) { : argument is not interpretable as logical
> "$"(jj,levels(f)[1])
Error in jj$levels(f)[1] : invalid subscript type 'language'
--
Robin K. S. Hankin
Uncertainty Analyst
University of Cambridge
19 Silver Street
Cambridge CB3 9EP
01223-764877
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