[R] regexp help needed.

2009-08-28 Thread Carlos Gonzalo Merino Mendez
Hi, I posted yesterday with a problem in a script. I still have the same problem, but I think I found a better way to explain my problem. I have a vector of character strings. Each string is unique, including numbers and letters. In the real world they represent a list of codes, so each

Re: [R] regexp help needed.

2009-08-28 Thread Henrique Dallazuanna
See this example: Str - c(345asd, 31qwe, 234tyu, 40kjhg) grep(^3, Str, value = TRUE) split(Str, substr(Str, 1, 1)) On Fri, Aug 28, 2009 at 7:29 AM, Carlos Gonzalo Merino Mendez carlosgmer...@yahoo.com wrote: Hi, I posted yesterday with a problem in a script. I still have the same problem,

Re: [R] regexp help needed.

2009-08-28 Thread Carlos Gonzalo Merino Mendez
Thanks, this what I was looking for. From: Henrique Dallazuanna www...@gmail.com Cc: r-help@r-project.org Sent: Friday, August 28, 2009 1:42:25 PM Subject: Re: [R] regexp help needed. See this example: Str - c(345asd, 31qwe, 234tyu, 40kjhg) grep(^3, Str

[R] regexp help needed

2008-11-28 Thread Lauri Nikkinen
Hello, I have a vector of dates and I would like to grep the year component from this vector (= all digits after the last punctuation character) dates - c(28.7.08,28.7.2008,28/7/08, 28/7/2008, 28/07/2008, 28-07-2008, 28-07-08) the resulting vector should look like 08 2008 08 2008 2008 2008 08

Re: [R] regexp help needed

2008-11-28 Thread Kornelius Rohmeyer
Lauri Nikkinen: Hello, I have a vector of dates and I would like to grep the year component from this vector (= all digits after the last punctuation character) dates - c(28.7.08,28.7.2008,28/7/08, 28/7/2008, 28/07/2008, 28-07-2008, 28-07-08) the resulting vector should look like

Re: [R] regexp help needed

2008-11-28 Thread Peter Dalgaard
Lauri Nikkinen wrote: Hello, I have a vector of dates and I would like to grep the year component from this vector (= all digits after the last punctuation character) dates - c(28.7.08,28.7.2008,28/7/08, 28/7/2008, 28/07/2008, 28-07-2008, 28-07-08) the resulting vector should look

Re: [R] regexp help needed

2008-11-28 Thread Gabor Grothendieck
On Fri, Nov 28, 2008 at 5:51 AM, Peter Dalgaard [EMAIL PROTECTED] wrote: Lauri Nikkinen wrote: Hello, I have a vector of dates and I would like to grep the year component from this vector (= all digits after the last punctuation character) dates - c(28.7.08,28.7.2008,28/7/08, 28/7/2008,