How to normalize a matrix or array?

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M Mirza
M Mirza 2023-2-20
回答： Bhavana Ravirala 2023-2-20
I want to normalize the following array/matrix in such a way that
1) Replace each Row element with average value of that Row.
2) Normalize the matrix with respect to the row with maximum average.
A1 A2 A3 A4 . . . An
B1 B2 B3 B4 . . . Bn
C1 C2 C3 C4 . . .Cn
D1 D2 D3 D4 D5. . . Dn
I shall be really grateful.
  2 个评论
Askic V
Askic V 2023-2-20
I suggest you to start by reading the Matlab documentation.
https://www.mathworks.com/help/matlab/ref/mean.html
https://www.mathworks.com/help/matlab/ref/double.normalize.html?s_tid=doc_ta
It would be good to post one test example. How matrix look like in the begining of the process and how outcome looks like.
Dyuman Joshi
Dyuman Joshi 2023-2-20
Ran in:
It's not clear how you want to replace the values.
Let's say this is the input
y = reshape(1:20,4,5)
y = 4×5
1 5 9 13 17 2 6 10 14 18 3 7 11 15 19 4 8 12 16 20
What should be the output(s)?

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回答（1 个）

Bhavana Ravirala
Bhavana Ravirala 2023-2-20
Hi Mirza,
I understand that you want to replace each row with the average of all the elements in that row.
A = [0 1 1; 2 3 2; 1 3 2; 4 2 2]
M = mean(A,2) % gives a column vector with the average of all the elements in each row.
For getting the maximum value you can use the ‘max’ function.
Please refer to the below documentation for more information.
https://www.mathworks.com/help/matlab/ref/mean.html
https://www.mathworks.com/help/matlab/ref/max.html
Hope this helps!!

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