Sin and delta functions in matrix

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Firas Kareem 2020-8-3

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评论： Firas Kareem 2020-8-6

Hello , how can i creat two matirces one of them is sin function with 3*3 matrix and the second one is delta function with 3*3 matrix ,appreciate your support.

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John D'Errico 2020-8-3

What do you mean by a sin function with a 3x3 matrix? For that matter, a delta function with a 3x3 matrix is as confusing. Please give an example of what you are trying to create, as what you are asking is a bit too vague to offer much help.

Firas Kareem 2020-8-3

编辑：Firas Kareem 2020-8-3

Hello Mr. John , thanks for your reply , i mean i need to creat a matrix with sine signal ,so all elements of the matrix should be sine function like sin(wt) as a gating signal , the same for delta function in other matrix as recived photons in Single photons detectors array .

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Answer 1

Rohit Pappu 2020-8-6

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As per my understanding of your question, you would like to apply sine function on 3x3 matrix. In MATLAB, when a sine function is applied to a matrix, it works element wise.

Example :

% Create a matrix of random numbers of size 3x3
X = rand(3) 
% Apply sin() to the given matrix
Y = sin(X)
% The resultant matrix Y contains the sin() of each element of X

Please refer to the documentation here for more information of sin().

I haven't understood which delta function is being referred to, in the question . Kindly provide more information about it.

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Firas Kareem 2020-8-6

Hello Mr. Rohit , thanks for your answer , i mean i need the matrix with Sin(wt) variable elments not like values of x , as i need to do FFT after that ,also the delta function is the dirac function so i need all the element like Dirac(t) with variables to convert it for time domain to frequency domain .

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