How to calculate the average value of selected row, column from a given matrix.

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U B
U B 2023-2-14
回答： U B 2023-2-14
I have a matrix A =[ 16 2 3 13 16 ; 5 11 10 8 8 ; 9 7 6 12 5; 4 14 15 1 3] . I want to calculate the avarage value for A(i.j) where i ranges from 1 to 3 and j from 0 to 2. Can You please help me with this?

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采纳的回答

U B
U B 2023-2-14
A = magic(5);
n = A(2:4,1:3); % value I want to read
M = mean2(n);

更多回答（1 个）

Arif Hoq
Arif Hoq 2023-2-14
编辑：Arif Hoq 2023-2-14
Ran in:
A =[ 16 2 3 13 16 ; 5 11 10 8 8 ; 9 7 6 12 5; 4 14 15 1 3]
A = 4×5
16 2 3 13 16 5 11 10 8 8 9 7 6 12 5 4 14 15 1 3
i=1:3;
j=1:2;
out_each_col=mean(A(i,j),1)
out_each_col = 1×2
10.0000 6.6667
out_each_row=mean(A(i,j),2)
out_each_row = 3×1
9 8 8

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