To achieve what you want you need to parse the strings yourself, e.g.:
> x <- c("ABC 10", "ABC 2")
> x1 <- do.call("rbind", strsplit(x, " "))
> x2 <- list(x1[,1], as.numeric(as.character(x1[,2])))
> do.call("order", x2)
[1] 2 1
>The above will only work if each element of 'x' has the same number of spaces in it (i.e., splitting on a space breaks each element into the same number of components).
hope this helps,
Tony Plate
At Thursday 04:37 PM 7/10/2003 -0400, kschlauc wrote:
Can someone tell me which version of R began to order alpha-numeric strings in this manner: "ABC 10" < "ABC 2" rather than "ABC 2" < "ABC 10" ?
And, is there a way to force "ABC 2" to be ordered as a value less than "ABC 10"?
thank you, Karen [EMAIL PROTECTED]
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