[R] missing values

[jim holtman]

you could use this instead of the last two statements; don't know if
it makes any simpler since it is just combining into one statement
what you had in two:

data$y[is.na(data$y)] <- means[is.na(data$y)]


On Nov 23, 2007 1:49 PM, lamack lamack <lamac_k at hotmail.com> wrote:
>
>
>
> Dear all, there is a best way to do the following task?
>
> x               = rep(c("A","B"),5)
> y               =  rnorm(10)
> data           = data.frame(x,y)
> data$y[1:2]   = c(NA,NA)
> means         = ave(data$y,as.character(data$x),FUN=function(x)mean(x,na.rm=T))
> aux           = which(is.na(data$y))
> data[aux,"y"] = means[aux]
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-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?