An embedded and charset-unspecified text was scrubbed... Name: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20100121/ed5eba8d/attachment.pl>
how to give the index with some given index ?
4 messages · Carrie Li, David Winsemius
An embedded and charset-unspecified text was scrubbed... Name: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20100121/f13f7ef7/attachment.pl>
An embedded and charset-unspecified text was scrubbed... Name: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20100121/3f7a20fd/attachment.pl>
On Jan 21, 2010, at 1:18 AM, Carrie Li wrote:
Dear R-helpers, I have a question about giving index. Suppose that I have a vector say, id=1:5, and each of them have some given index but some of them may share the same index Now, I have another vector, and I want to give it a index based what just defined. # 5 subjects test1=1:5 # corresponding index, so here, subject 2 and subject 4 share the common index "1" index=c(3,1,2,1,4) # now I have another vector, and I want to use the index defined above test2=c(5,4,2,1,1,5,3) ## so, the result should be something like this--index of test2 is (4,1,1,3,3,4,2)
> index[test2] [1] 4 1 1 3 3 4 2
David Winsemius, MD Heritage Laboratories West Hartford, CT