[R] match multiple records

From: Weiwei Shi <helprhelp_at_gmail.com>
Date: Tue 21 Jun 2005 - 08:34:48 EST


Hi,

I have a question, explained by the following example:
> a<-c(1,2,3)
> b<-c(1,1,2,4)
> b[match(a,b, nomatch=0)]

[1] 1 2

which means it returns "the first match", but I want to get 1 1 2 instead of 1 2

In a word, how to do multiple matching?

thanks,

-- 
Weiwei Shi, Ph.D

"Did you always know?"
"No, I did not. But I believed..."
---Matrix III

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Received on Tue Jun 21 08:40:30 2005

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