try this:
y <- c(4,4,4,2,45,12,12)
match(y, unique(y))
I hope it helps.
Best,
Dimitris
On 3/27/2010 4:42 PM, sun wrote:
Dear all,
I want to replace an (unsorted) id variable in a large dataset by a running
number without changing the order of the cases.
E.g.,
y<- c(4,4,4,2,45,12,12)
should be replaced by something like
x<- c(1,1,1,2,3,4,4)
Sorry for this simple question& thank you very much for your help!
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
--
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center
Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands
Tel: +31/(0)10/7043478
Fax: +31/(0)10/7043014
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
