

   SSaammppllee RRaannkkss

        rank(x)

   DDeessccrriippttiioonn::

        `rank' returns the sample ranks of the values in `x'.
        Ties result in ranks being averaged.  `NA' values are
        not allowed in this function.

   SSeeee AAllssoo::

        `order' and `sort'.

   EExxaammpplleess::

        (r1 <- rank(x1 <- c(3,1,4,59,26)))
        all(rank(r1) == r1) ## rank() is "idempotent": rank(rank(x)) == rank(x)
        (r2 <- rank(x2 <- c(3,1,4,5,9,2,6,5,3,5)))
        all(rank(r2) == r2)

