[R] check and verify

[arun]

Hi,
Try this:
 test$A<-(test$A==test$C)*test$E
 test$B<-(test$B==test$D)*test$F
 test
#   A  B C D  E  F
#1  0  0 c d 40 30
#2 20  0 a b 20 10
#3  0 30 y m 50 30
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 within(test,{A<-(A==C)*E; B<-(B==D)*F})
 #  A  B C D  E  F
#1  0  0 c d 40 30
#2 20  0 a b 20 10
#3  0 30 y m 50 30
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 1:00 AM
Subject: [R] check and verify

Hi, 


I have 6 columns in my dataframe (test)

A B C D E F
a b c d 40 30
a f a b 20 10
x m y m 50 30

If character value in column A matches with that in column C, it gets the percentage in column E, similarly if value in column B matches the value in D, it gets the percentage in F column. If it doesn't match, it gets 0 percentage.


How can I do that ?

thanks

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