[R] upData levels in Hmisc

[Tanya Murphy]

Dear listserve members, especially Prof. Harrell:

I am trying to create a factor variable that has fewer levels than the 
original.

I have a factor:
>rosa$risk1
   [1] 2 2 5 1 ...
[1799] 3 3 1 3 1 6 3 3 1 5 3 5 3 3 3 0 3 3 3 1 1 3
Levels: 0 1 2 3 4 5 6 8

But when I do this:
rosa2 <- upData(rosa, 
levels=list(risk1=list(1='1',2='2',3='3',0=c('0','4','6','8'))))

I get:
Error: syntax error

But I am able to reproduce the dat2 <- upData(dat, etc...)  example in Prof. 
Harrell's Hmisc notes.

Thanks!

Tanya Murphy