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

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Alexandros Samp
Alexandros Samp 2016-9-27
回答： Kelly Kearney 2016-9-27
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.

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采纳的回答

Star Strider
Star Strider 2016-9-27
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

更多回答（1 个）

Kelly Kearney
Kelly Kearney 2016-9-27
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)

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