Sorry, the data is:
temp <- data.frame(type1 = c("male", "female", "male", "female", "female"),
type2 = c("low", "med", "high", "low", "med"), a = c(1,2,4, NA, 3), b =
c(5,NA,5,1,2), c = c(0,0,1,1,NA))
On Tue, Mar 17, 2009 at 4:28 PM, Ferry <fmi.ml...@gmail.com> wrote:
> Hi,
>
> I have newbie question. Suppose I have the following data:
>
> temp <- data.frame(type1 = c("male", "female", "male", "female", "female"),
> type2 = c("low", "med", "high", "low", "med"), a = c(1,2,4, NA, 3), b =
> .... [TRUNCATED]
>
> temp
> type1 type2 a b c
> 1 male low 1 5 0
> 2 female med 2 NA 0
> 3 male high 4 5 1
> 4 female low NA 1 1
> 5 female med 3 2 NA
>
> how to change all NA into 0 (zero) ? so I would have the following:
>
> temp
> type1 type2 a b c
> 1 male low 1 5 0
> 2 female med 2 0 0
> 3 male high 4 5 1
> 4 female low 0 1 1
> 5 female med 3 2 0
>
> I've been trying with which() but without success.
>
> Any pointer is appreciated.
>
> Thank you,
>
> Ferry
>
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