Storing values in a matrix out of nested for loops

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SM
SM am 30 Apr. 2022
Kommentiert: SM am 3 Mai 2022
I am trying to write a code where I want to store the values out of element wise multiplication using three for loops. I tried a lot but it only shows values for a particular iteration. Each number in the matrices have to be multiplied with every other number of the other two matrices and the results to be stored in one row or column matrix. Kindly help.
m1=[0.5; 0.5];
m2=[0.6; 0.4];
m3=[0.2; 0.8];
m=[m1 m2 m3];
s1=m(:,1);
s2=m(:,2);
s3=m(:,3);
s5=zeros(1,8);
for i=1:length(s1)
for j=1:length(s2)
for k=1:length(s3)
s4=s1(i).*s2(j).*s3(k);
end
end
end

Akzeptierte Antwort

Akira Agata
Akira Agata am 30 Apr. 2022
how about the following?
m1 = [0.5; 0.5];
m2 = [0.6; 0.4];
m3 = [0.2; 0.8];
[q, p, r] = meshgrid(m2, m1, m3);
s4 = p.*q.*r;
disp(s4)
(:,:,1) = 0.0600 0.0400 0.0600 0.0400 (:,:,2) = 0.2400 0.1600 0.2400 0.1600
  3 Kommentare
Akira Agata
Akira Agata am 2 Mai 2022
Please modify slightly, like below:
But I'm not sure why "0.8" appears twice in your s5 (3rd and 8th elements)
m1 = [0.5; 0.5];
m2 = [0.6; 0.4];
m3 = [0.2; 0.8];
[q,r, p] = meshgrid(m2, m3, m1);
s = p.*q.*r;
s = s(:);
disp(s)
0.0600 0.2400 0.0400 0.1600 0.0600 0.2400 0.0400 0.1600
SM
SM am 3 Mai 2022
Thanks a lot! This works fine.

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