how to calculate the moving product of a vector in matlab

To calculate the moving product of a vector in MATLAB, you can use a loop and indexing. The idea is to iterate over the vector and multiply a certain number of consecutive elements each time.

Here's an example code that computes the moving product of a vector x with a window size of w:

main.m
% Example vector of length n
x = [1 2 3 4 5 6 7 8 9 10]; 
% Window size
w = 3;
% Number of products
np = length(x) - w + 1;

% Initialize output vector
y = zeros(1, np);

% Compute moving product
for i = 1:np
    y(i) = prod(x(i:i+w-1));
end

% Print output
disp(y);
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In this code, x is the input vector, w is the size of the window, and np is the number of products to compute (i.e., the length of the output vector). The prod function is used to compute the product of a set of values. The loop starts from the first element of the vector and calculates the product of the current window of w elements. The output y is a vector of length np containing the moving products.

Note that this code assumes that the window size w is smaller than or equal to the length of the input vector x. If w is larger, the code will produce an error.