Rcpp sugar for rank function

Question

I am trying to get the rank of a vector in C ++ using Rcpp. I used other sugar functions like

is_na();

Is there a similar sugar function for a rank R function in C ++. There is also a list of available R-sugars at Rcpp /

Answer 1

1) There is a orderfunction here and order(order(x))there rank(x, ties = "first").

2) . The second way:match(x, sort(x))

ADDED Second approach.