[問題] 我有兩各矩陣....

[spm (夫夫.....)]

A :101x401  B:101x401

其中我希望製造一各新矩陣C

C(1,1)是

A(1,1)".*"B(:,1)+A(2,1).*B(:,1)...........A(101,1).*B(:,1)

再把上式取sum

依此類推

C(1,2)

A(1,1)".*"B(:,2)+A(2,1).*B(:,2)...........A(101,1).*B(:,2)

取sum

C(m,n)

A(1,m).*B(:,n)+A(2,m).*B(:,n).............A(101,m).*B(:,n)

降這麼寫阿?

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◆ From: 140.117.167.137
推 wolako:test=sum(A);C=test(1:size(A,1))'*sum(B);
推 stevenlee89:for m = 1:401
→ stevenlee89:for n = 1:401
→ stevenlee89:C(m,n) = sum(A(:,m)).*sum(B(:,n));
→ stevenlee89:end
→ stevenlee89:end