Hi Gabor,
   
  The first one works fine. Just out of curiosity, in second solution: I dont want to create a matrix. I want to add a new column to the existing dataframe (i.e. V2 based on the values in V1). Is there a way to do it?
   
  TIA
  Sachin
   
  

Gabor Grothendieck <ggrothendieck@gmail.com> wrote:
  Try:

V1 <- matrix(c(10, 20, 30, 10, 10, 20), nc = 1)

V2 <- 4 * (V1 == 10) + 6 * (V1 == 20) + 10 * (V1 == 30)

or

V2 <- matrix(c(4, 6, 10)[V1/10], nc = 1)

On 4/21/06, Sachin J wrote:
> Hi,
>
> How can I accomplish this task in R?
>
> V1
> 10
> 20
> 30
> 10
> 10
> 20
>
> Create a new column V2 such that:
> If V1 = 10 then V2 = 4
> If V1 = 20 then V2 = 6
> V1 = 30 then V2 = 10
>
> So the O/P looks like this
>
> V1 V2
> 10 4
> 20 6
> 30 10
> 10 4
> 10 4
> 20 6
>
> Thanks in advance.
>
> Sachin
>
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