subset select within a function
juli g. pausas wrote:
Dear all,
I'd like to subset a df within a function, and use select for choosing
the variable. Something like (simplified example):
mydf <- data.frame(a= 0:9, b= 10:19)
ttt <- function(vv) {
tmpdf <- subset(mydf, select= vv)
mean(tmpdf$vv)
}
ttt(mydf$b)
But this is not the correct way. Any help?
Thanks in advance
Juli
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are you looking for something like:
mydf <- data.frame(a= 0:9, b= 10:19)
ttt <- function(vv) {
tmpdf <- subset(mydf, select= vv)
lapply(tmpdf,mean)
}
ttt("b") $b
[1] 14.5
> ttt(c("a","b"))
$a
[1] 4.5
$b
[1] 14.5
??
Peter