[R] Using "_" in names?
Spencer Graves
spencer.graves at pdf.com
Tue Nov 4 03:20:36 CET 2003
I work with data bases that routinely use the underscore, "_", as
part of names. I've seen discussion on this list of possibly allowing
that in a future release of R. How far are we away from that?
I got the following from R 1.8.0 under Windows 2000:
> A_1
Error: syntax error
> A_B <- 1
Error: syntax error
> "A_B" <- 1
> DF <- data.frame(A_B=1)
Error: syntax error
> DF <- data.frame("A_B"=1)
> DF
A.B
1 1
> names(DF) <- "A_B"
> DF
A_B
1 1
> lm("A_B"~1, DF)
Error in terms.formula(formula, data = data) :
invalid term in model formula
Thanks for your help,
Spencer Graves
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