[R] How to get a substring from a string

[arun]

Hi,
Try:

  sub("~.*","",string)
#[1] "yab"

#or
 as.character(as.formula(string)[[2]])
#[1] "yab"

A.K.


On Wednesday, January 15, 2014 9:40 AM, "Yuan, Rebecca" <rebecca.yuan at bankofamerica.com> wrote:
Hello all,

I would like to get a substring (first few characters till ~) from a string

I can think of way of doing so by

> string<-'yab~a+b+c'
> x<-substring(string,1,3)
> x
[1] "yab"

But if I do not know the length of the first word before ~ sign, how can I get it out from the whole string?

Thanks,

Rebecca

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