[R] A question on Duplicating

[rex.dwyer at syngenta.com]

ab = paste(a,b,sep=";~;~;~")
flag = length(ab)==length(unique(ab))

This should work unless you use 3 consecutive winking elephants in other places in your program.



-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Nipesh Bajaj
Sent: Wednesday, February 09, 2011 10:12 AM
To: r-help at r-project.org
Subject: [R] A question on Duplicating

Hello I am struggling to accomplice an idea which is as follows:

I have a vector say: a <- c("a", "b", "c", "a") and another: b <- c("m",
"n", "o", "m"). Length of those 2 vectors are essentially be same. Here task
is to check the duplicates in the vector 'a' and then to check whether any
duplicates are there in the same places of 'b'. If not, flag a FALSE.

I above example, it is correct hence TRUE. However in general how can I
implement this?

Can somebody please help me?

Thanks,

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