How to calculate the mean of each row, excluding the first column?

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Julia
Julia 2023-2-12
评论： Julia 2023-2-12
For example, if I have this matrix
M=[0 3 4
0 6 5
0 9 2
0 3 1
0 8 9
0 4 6]
How can I calculate the mean of each row, excluding that 0? I tried
A=mean(M(:,2:end))
but this code gives me the mean of each column instead of each row.

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采纳的回答

Arif Hoq
Arif Hoq 2023-2-12
Ran in:
M=[0 3 4
0 6 5
0 9 2
0 3 1
0 8 9
0 4 6];
A=mean(M(:,2:end),2)
A = 6×1
3.5000 5.5000 5.5000 2.0000 8.5000 5.0000

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