how to calculate closest points in a row matlab?

Question

abdul wahab aziz 2016-8-27

评论： Image Analyst 2016-8-27

i have a row 0.7422 0.0436 1 0.6040 0.057

in this row i need to find closest distance from 3rd col point which is 0.6040 the ans should be 0.7422

Star Strider 2016-8-27

The ‘third col point’ is actually 1, not 0.6040 which is the fourth, but the answer is the same regardless.

Image Analyst 2016-8-27

I'm not sure I understand the question. Do you want to

find out which element has a value closest to the value of element 3, OR
find out which pairs of elements have the smallest difference between their values?

Which one? Your subject line seems to indicate #2 but the body of your post seems to ask #1, so which is it? Or is it something else?

Answer 1

Star Strider 2016-8-27

One approach:

V = [0.7422 0.0436 1 0.6040 0.057];
idx = 3;
[~,Vidx] = min(abs(V(idx) - V(V~=V(idx))));
Out = V(Vidx)
Out =
       0.7422