How to perform cumulative product on a discrete signal in Matlab

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Varun Baskar
Varun Baskar on 2 Jun 2020
Answered: Sai Sri Pathuri on 9 Jul 2020
I tried to perform cumulative product on a discrete signal. But it keeps throwing errors. Am not sure how to go about it.
Here's my code:
function [i_o,q_o] = Accumulate(I, Q)
cumprod = dsp.CumulativeProduct;
i_o = cumprod(I);
q_o = cumprod(Q);
Thanks
  3 Comments
Varun Baskar
Varun Baskar on 2 Jun 2020
Hi Steven,
I get the followinge error:
Error using Accumulate (line 13)
Not enough input arguments.
Line 13 is this line: i_o = cumprod(I);

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Answers (1)

Sai Sri Pathuri
Sai Sri Pathuri on 9 Jul 2020
How did you call the function? I assume you didn't pass input arguments
It must be called with input arguments, like
%
% Code to find (or) define I, Q
%
[i_o,q_o] = Accumulate(I, Q); % Call the function with input arguments
%
% Code using i_o, q_o
%
function [i_o,q_o] = Accumulate(I, Q)
cumprod = dsp.CumulativeProduct;
i_o = cumprod(I);
q_o = cumprod(Q);
end

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