Hello, how can I calculate the row and column by inserting a 3D matrix using this equation

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hisham mohammed 2023-3-1

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https://ww2.mathworks.cn/matlabcentral/answers/1921280-hello-how-can-i-calculate-the-row-and-column-by-inserting-a-3d-matrix-using-this-equation

评论： Jan 2023-3-1

clc
clear all
close all
xm= [5 5 5 5;5 -4 -3 -2;5 -1 0 1;5 2 3 4]
xm = 4×4
     5     5     5     5
     5    -4    -3    -2
     5    -1     0     1
     5     2     3     4
n=length(xm);
[cf] =coherence_factor(xm,n)
cf = 1×4
    1.0000    0.0741    0.2315    0.9074
function [cf] = coherence_factor(xm,n)
for i=1:4;
    n=length(xm(i,:));
    %%%%%%%%%%%%%%%%%%%%  equation  %%%%%%%%%%%%%%%%%%%
    cf(i)=(abs (sum(xm(i,:))).^2) / (n* sum(abs(xm(i,:).^2)));
end
CF=cf(i);
end

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hisham mohammed 2023-3-1

I want to add another forloop to calculate 3D matrix of CF

Jan 2023-3-1

在 MATLAB Online 中打开

@hisham mohammed: You define n as input argument, but overwrite it by the same value in each iteration. Of course all xm(i,:) have the same length. So use this before the loop:

m = size(xm, 2);

The line CF=cf(i); is useless, because CF is not replied. Currently the output is a vector. It is not clear how you want to expand ot to 3D.

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