From a given number how to find the value closest to zero in a vector.

If a have a vector [93.60 119.15 136.19 191.55 238.39 268.20 302.27 340.60 383.18 425.77] and a number that every time is different.For example numb=410 i want to find the number 383.18 from the vector.

Answer 1

[Star Strider]

Use the find function:

vector = [93.60 119.15 136.19 191.55 238.39 268.20 302.27 340.60 383.18 425.77];
numb=410;
idx = find(vector <= numb, 1, 'last');
Result = vector(idx)

Result =
   383.18

Answer 2

[Kelly Kearney]

Star's answer works in the values in the vector are sorted. If not, min might be a better choice:

vector = [93.60 119.15 136.19 191.55 238.39 268.20 302.27 340.60 383.18 425.77];
numb=410;

[~, imin] = min(abs(vector - num));
vector(imin)