Re: [R] missing value

From: Uwe Ligges <ligges_at_statistik.uni-dortmund.de>
Date: Wed 02 Aug 2006 - 23:09:32 EST

Mauricio Cardeal wrote:
> Hi all
>
> # I have this data set and how can I assign NAs in just one command ?

is.na(dat[dat==9]) <- TRUE

> And why the summary(dat) function preserves the value 9 as real. ?
>

Because you have not changed the contents of dat at all, only the contents of x,y,z, and w.

Uwe Ligges

> x <- c(1,2,3,9,4)
> y <- c(3,6,9,2,3)
> z <- c(9,9,2,2,8)
> w <- c(6,5,3,0,9)
>
> dat <- cbind(x,y,z,w)
> summary(dat)
>
> x[x==9] <- NA
> y[y==9] <- NA
> z[z==9] <- NA
> w[w==9] <- NA
>
> summary(dat)
> summary(x)
> summary(y)
> summary(z)
> summary(w)

>
> Thank you all,
> Mauricio
>
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R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Wed Aug 02 23:15:00 2006

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