How to multiply a window function to one dimension?

Here is a Matlab script to apply a fixed window function along one dimension. Although it works, but is not elegant as a Matlab script. Can it be made more elegant? Thanks.

    [L1, L2, L3, L4, L5, L6] = size(fids);
    for n1=1:L1
        for n3=1:L3
            for n4=1:L4
                for n5=1:L5
                    for n6=1:L6
                        fids(n1,:,n3,n4,n5,n6) = fids(n1,:,n3,n4,n5,n6) .* window;
                    end
                end
            end
        end
    end

Where window is a vector with the size equal to L2.

[pietro]

May you provide a simple numeric example, please?

[José-Luis]

Jian, as an aside: It would be nice if you gave some more feedback on the questions you have asked in the past. Please accept answers if they solved your problem or explain why a given answer does not do what you wanted.

[Image Analyst]

Perhaps you should read these to increase the quality of answers you get.

http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

http://www.mathworks.com/matlabcentral/answers/728-how-do-i-write-a-good-question-for-matlab-answers

Answer 1

[Chad Greene]

Since you didn't give us your fids or window data, I'll make them up:

fids = rand(4,5,6,7,8,9); 
window = 2*ones(1,5)-3;

Now your entire script you provided in your question can be replaced by this:

fids = bsxfun(@times,fids,window);

[Image Analyst]

You are incorrect. Chad's fids is a 6 dimensional array.

[John]

Hi, Chad:

Thanks for the good answer. I understand it now. Matlab's doc on @times is very primitive.

So, if the vector is to apply to the 4th dimension, your vector should be defined as:

    window = 2*ones(1,1,1,7)-3;

Back to the vector in the original question. It has to be arranged as

    window = reshape(window, [1,size(window)]);
    fids = bsxfun(@times,fids,window);

and if the multiplication is to the 4th dimension, arrange it as:

    window = reshape(window, [1,1,1,size(window)]);

Correct?