[R] check and verify

[Bert Gunter]

?ifelse
Probably most simply used via ?with, e.g.l

result1 <- with(test, ifelse(A == C,E,0)) ## Similarly for B and D

-- Bert

On Mon, Aug 27, 2012 at 10:00 PM, Sapana Lohani <lohani.sapana at ymail.com> wrote:
> 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
>
>         [[alternative HTML version deleted]]
>
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> and provide commented, minimal, self-contained, reproducible code.



-- 

Bert Gunter
Genentech Nonclinical Biostatistics

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