How to find an array in a vector or matrix?
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I want to find a specific number in a vector, and I am using the following command
[s,t] = find(q_p_d100==qp100max)
But I get the follwoing:
s =
0×1 empty double column vector
t =
0×1 empty double column vector
However, I simply need a raw and column number of the position of the number I'm looking for.
('qp100max' is the maximum number in 'q_p_d100 vector')
采纳的回答
The output of FIND shows you, that qp100max is not the maximum value of q_p_d100, but it is not even an element of the vector:
any(q_p_d100 == qp100max) % FALSE
I assume, this is a rounding problem. Try it:
max(q_p_d100) - qp100max
Is this a small value?
To get the position of the maximum value:
[maxV, index] = max(q_p_d100)
If the value is not unique:
allIndex = find(q_p_d100 == maxV)
更多回答（1 个）
Ahmed Redissi
2021-4-14
0 个投票
You can use the function "ismember" to find if an array or a scalar is part of another array. Here is the documentation for it so you can learn how to use it:
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