Convolution Command: Inputs Invalid
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Andrew Cunningham
on 23 Sep 2018
Commented: Andrew Cunningham
on 27 Sep 2018
I am having trouble getting the output of my two functions to be accepted by the convolution function. Any help is appreciated getting this to work. I get the following when I use conv: Invalid data type. First and second arguments must be numeric or logical. I am familiar with matlab and can do the plots and other aspects once I get the function working. Thank you in advance for any help. I attached my code below:
t = -5:10; syms n x1 = symsum(dirac(t-8.*n),n,0,5); h1 = exp(-t).*heaviside(t); H1 = h1.'; Yt = conv(x1,h1);
My two functions are: x(t)=Sum(from 0-5) dirac(t-8n) h(t)=e^(-t)*u(t)
where u(t) is the step function
2 Comments
Image Analyst
on 23 Sep 2018
Why are you using symbolic variables? Can't you just use numerical values with actual values for the elements?
Accepted Answer
Viren Gupta
on 27 Sep 2018
I tried relicating your code. x1 is of type sym. You can convert x1 into numeric type using double(x1). That should solve the error. 'h1' is already a numeric type variable
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