[R] string processing(regular expressions)

Rui Barradas ruipbarradas at sapo.pt
Sun Sep 1 22:54:30 CEST 2013


Hello,

Try the following.

gsub("^0+", "", as.character(nCourse))


Hope this helps,

Rui Barradas

Em 01-09-2013 21:41, Robert Lynch escreveu:
> I have a variable that is course #
> nCourse <-
> as.factor(c("002A","002B","002C","007A","007B","007C","101","118A","118B","118C"))
>
> And I would like to get rid of the leading zeros, and have the following
> set
> ("2A","2B","2C","7A","7B","7C","101","118A","118B","118C") to paste()
> together with the department, "B","P","C" (bio, phys, & chem etc)
>
> I am stuck trying to figure out regular expressions, they are new to me.
>
> Thank You very much
>
> 	[[alternative HTML version deleted]]
>
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