matlab - Given a vector a=[1,2, 3.2, 4, 5] and an element x=3 In vector a, how to find the exact entry which is bigger than x?

Question

Given a vector a=[1,2, 3.2, 4, 5] and an element x=3 In vector a, how to find the exact entry which is bigger than x?

Answer 1

I'm not sure what you mean by "exact" entry. This will give you indices of all the values greater than x:

indices = find(a > x);

Assuming a is already sorted, this will give you the index of the first one (i.e. the smallest value greater than x):

index = find(a > x,1);