R function for percentrank

I don't see one but that means nothing.   I think you
can write such a function in a few minutes

Will something like this work or am I
missunderstanding what Excel's percentrank does ?

aa <- rnorm(25);  aa  # data vector 
percentrank <- function(x) { 
var  <- sort(x)
p.rank <- 1:length(var)/length(var)*100
dd  <- cbind(var,p.rank)
}
pr <- percentrank(aa); pr

Hi,

Does anyone know if R has a built-in function that
is equvalent to Excel's
percentrank, i.e., returns the rank of a value in a
data set as a percentage
of the data set?

Thanks,

-- 
Tom

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