Hi,
I'd like to create a function that accepts as arguments a string that is to
be substituted within a variable name. For instance, suppose I have a data
frame df:
df<-data.frame(x_narrow=c(rnorm(100,0,1)),x_wide=c(rnorm(100,0,10)))
What I have in mind is something like:
f <- function(string){
var = paste("x_",string,sep = "")
df$var
}
which does not work. Any suggestion for modifications? Thanks in advance,
Matteo
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