find the rank of a element in a an array of numbers

Rank of 3 in [4 5 2 7 8] is two. Is there a matlab function for this? How to do it? thanks

Answer 1

[Azzi Abdelmalek]

v=[4 5 2 7 8]
idx=find(v==2)

[R yan]

thanks, but I want to know the position of the element on the sorted array

[Azzi Abdelmalek]

idx=find(sort(v)==2)