How to find a row that have maximum mean value in 2D array?

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minsoo kim
minsoo kim 2017 年 12 月 2 日
コメント済み: KL 2017 年 12 月 3 日
Let's say I have a 2D array S(m,n).
What I want to do is to find a row that has the biggest mean value. I'll call this row as 'i'th row.
So my matlab code was like this.
[i]=find(S==max(mean(S)));
[i]
But matlab just shows "ans = []" which means, there is something wrong with my code.
The problem is, I have no idea how to fix it.
Any ideas?

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KL
KL 2017 年 12 月 2 日
編集済み: KL 2017 年 12 月 3 日
You'd need
[maxVal, maxInd] = max(mean(S,2))
mean with parameter 2 calculates mean on the second dimension and then you find the max and it's index.
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minsoo kim
minsoo kim 2017 年 12 月 3 日
uh....I think there are some mistakes in your code.
maxRow = find(max(mean(S,2)))
This only returns 1.
KL
KL 2017 年 12 月 3 日
You're right, using find wasn't the best choice. You can simply use the second output of max.

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