How to perform cumulative product on a discrete signal in Matlab

Question

Varun Baskar 2020-6-2

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/540395-how-to-perform-cumulative-product-on-a-discrete-signal-in-matlab

回答： Sai Sri Pathuri 2020-7-9

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

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Steven Lord 2020-6-2

What is the full and exact text of the error messages you receive when you run your code? Show us all the text displayed in red in the Command Window when you run your Accumulate function.

Varun Baskar 2020-6-2

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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Answer 1

Sai Sri Pathuri 2020-7-9

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/540395-how-to-perform-cumulative-product-on-a-discrete-signal-in-matlab#answer_463232

在 MATLAB Online 中打开

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