[R] Use or ??

[arun]

HI,
If I understand your question correctly, this should give the result:
dat1<-read.table(text="
A B C
a b a
x y z
",sep="",header=TRUE,stringsAsFactors=FALSE)
within(dat1,{new_column<-ifelse(A==C|B==C,"y","n")})
 # A B C new_column
#1 a b a          y
#2 x y z          n
A.K.




----- Original Message -----
From: Sapana Lohani <lohani.sapana at ymail.com>
To: R help <r-help at r-project.org>
Cc: 
Sent: Tuesday, August 28, 2012 8:06 PM
Subject: [R] Use or ??

Hi, My data frame looks like

A B C 

a b a 

x y z 


I want to add a new column which says "y" if either A or B matches with C and "n" if there is no match. How can I do that?

Thanks

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