r - How to get ranks with no gaps when there are ties among values? -

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when there ties in original data, there way create ranking without gaps in ranks (consecutive, integer rank values)? suppose:

x <-  c(10, 10, 10, 5, 5, 20, 20) rank(x) # [1] 4.0 4.0 4.0 1.5 1.5 6.5 6.5

in case desired result be: 

my_rank(x) [1] 2 2 2 1 1 3 3

i've played options ties.method option (average, max, min, random), none of designed provide desired result.

is possible acheive rank() function?

i can think of quick function this. it's not optimal loop works:)

x=c(1,1,2,3,4,5,8,8)  foo <- function(x){     su=sort(unique(x))     (i in 1:length(su)) x[x==su[i]] =     return(x) }  foo(x)  [1] 1 1 2 3 4 5 6 6

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