[R] Creat new column based on condition

[Gabor Grothendieck]

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 <sachinj.2006 at yahoo.com> 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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