Dear Ashta,
Is this what you want?
x <- read.table(textConnection("v1 v2 v3 v4 v5
1 2 3 3 6
5 2 4 2 0
2 -9 5 4 3
6 2 1 3 4"), header = TRUE)
closeAllConnections()
x
# Option 1
x1 <- x # copy of x just for this example
x1$v2[which(x1$v2 == -9)] <- NA
x1
# Option 2
x2 <- x # copy of x just for this example
x2$v2 <- with(x2, ifelse(v2 == -9, NA, v2))
x2
HTH,
Jorge
On Sun, Nov 8, 2009 at 10:23 AM, Ashta <> wrote:
> HI R-Users
>
> Assume that I have a data frame 'temp' with several variables
> (v1,v2,v3,v4,v5.).
>
> v1 v2 v3 v4 v5
> 1 2 3 3 6
> 5 2 4 2 0
> 2 -9 5 4 3
> 6 2 1 3 4
>
> 1, I want to look at the entire row values of when v2 =-9
> like
> 2 -9 5 4 3
>
> I wrote
> K<- list(if(temp$v2)==-9))
>
> I wrote the like this but it gave me which is not correct.
> False false false false false
>
> 2. I want assign that values as missing if v2 = -9. (ie., I want
> exclude from the analysis
>
> How do I do it in R?
>
> Thanks in advance
>
> ______________________________________________
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> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
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