[R] Working with regular expression

Christofer Bogaso bogaso.christofer at gmail.com
Fri Jan 18 21:11:35 CET 2013

Hello again,

I was trying to extract the date element from a character vector using
Regular expression. Below is a sample what I was trying to do:

> Text <- c("asdf May 09 2009", "dsaf_01-01-2001")
> gsub("[a-zA-Z_]", "", Text)
[1] "  09 2009"  "01-01-2001"

I basically have a long text and the task is to extract the date
element. My above strategy failed because I can not extract the month
for the first element.

Can somebody help me out?

Thanks and regards,

More information about the R-help mailing list