Sort, order and rank a vector

A utility that returns a list with the components equivalent to sort(x), order(x), rank(x, ties.method = "first").

sortrank(x)

Arguments

x

vector compatible with sort(x)

Details

This utility exists to save a little time on large vectors when two or all three of the sort(), order(), rank() results are required. In case of ties, the ranks component matches rank(x, ties.method = "first").

Value

A list with components

x

the sorted input vector x

ix

the permutation = order(x) which rearranges x into ascending order

r

the ranks of x

Note

This function was benchmarked faster than the combined calls to sort and rank.

References

See sort.

Author

Maria L. Rizzo mrizzo@bgsu.edu

Examples

sortrank(rnorm(5))
#> $x
#> [1] -0.5785381 -0.4833321  0.6799946  0.8886331  1.6365181
#> 
#> $ix
#> [1] 5 1 3 4 2
#> 
#> $r
#> [1] 2 5 3 4 1
#>