string manipulation
To be on the safe side in case there are other characters at the end of the string, use:
mytext <- "I do not want the first number 1234, but the second number 5678sadfsadffdsa"
# make sure you get 4 digits
sub("^.*second number[^[0-9]]*([0-9]{4}).*", "\\1", mytext)
[1] "5678"
On Thu, Aug 25, 2011 at 7:00 PM, Lorenzo Cattarino
<l.cattarino at uq.edu.au> wrote:
I R-users, I am trying to find the way to manipulate a character string to select a 4 digit number after some specific word/s. Example: mytext <- "I do not want the first number 1234, but the second number 5678" Is there any function that allows you to select a certain number of digits (in this case 5678) after a particular word/s (e.g., second number) Thank you for your help Lorenzo ? ? ? ?[[alternative HTML version deleted]]
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