Hardamom product between two matrices with a for loop

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Raisul Islam 2017-10-9

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https://ww2.mathworks.cn/matlabcentral/answers/360322-hardamom-product-between-two-matrices-with-a-for-loop

评论： Christine Tobler 2017-10-9

 I have two matrices X and V. X is a p by p matrix while v is a n by p matrix. I want a hardamom product between X and V while each element of v must be multiplied with each column of X / must go through each row and columns of X. The output HD matrix must be n by p. I tried the following for loop, but I end up having a p-p-n matrix. I want to plot n by p , and my n goes into the third dimension. I want a signal plot of n by p, not a p by p by n. The size should remain same. Also please suggest how will i do memory allocation as my n can be upto 5000 and p can be upto 40.
    X=impulseimp;
    v=residualmat;
    [m,n]=size(X);
    p=length(v);
    %%Decomposition with a loop (resulting in a 3D matrix????)
    % Now multiplication stage by steps
    Y = zeros(m,n,p);
    for i= 1:p
         for j=1:n
    Y(:,:,j) = X * v(i);
%     Y(:,:,i) = X * v(i);
        end
      end 
    HD = Y;