How to perform an array multiplication for a vector and a matrix and output results as a matrix?
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Here is the problems and solution which seems very bad. Could anyone suggest a better solution?
M = [1 2 3];
C = [10 11 12; 13 14 15; 16 17 18; 19 20 21; 22 23 24];
K1=C(1,:).*M
K2=C(2,:).*M
K3=C(3,:).*M
K4=C(4,:).*M
K5=C(5,:).*M
B = vertcat(K1,K2,K3,K4,K5)
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更多回答（2 个）
the cyclist
2013-7-5
编辑：the cyclist
2013-7-5
Matrix multiplication is a core MATLAB function. I think you just want
B = C * M'
Notice that that is just a "*", not a ".*" (which is element-by-element) multiplication, and that I had to transpose M.
3 个评论
Alex Khazaradze
2013-7-5
the cyclist
2013-7-5
编辑：the cyclist
2013-7-5
I forgot the transpose when I first posted. Also, I just looked at your B matrix, and it seems you do not want simply matrix multiplication after all.
You expect the result to be a 5x3 and not a 5x1, right?
Alex Khazaradze
2013-7-5
I think this works:
M = [1 2 3];
C = [10 11 12; 13 14 15; 16 17 18; 19 20 21; 22 23 24];
for i=1:length(C)
result(i,:)=M.*C(i,:);
end
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2013-7-5
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