Undefined function 'laplace' for input arguments of type 'double'.

I want to take the place of noise generated through randn function but it gives followung error. Is it possible to take laplace of Noise vector. For example

noisevec = 0.55e-1 * sqrt (0.707) * randn ((1,100))

y = laplace (noisevec)

Answer 1

[Walter Roberson]

laplace() is only defined for symbolic values.

With numeric noisevec, if you were to use

y = laplace(sym(noisevec))

you would find that the answer would be the same as

sym(noisevec)/s 

laplace() is mostly intended for formula, not for numeric values. Each entry in the array would be treated independently as if it were a distinct formula. MATLAB does not provide a discrete laplace transform.

https://stackoverflow.com/questions/47278520/how-to-perform-a-numerical-laplace-and-inverse-laplace-transforms-in-matlab-for

There are connections to the Z transform

https://www.johndcook.com/blog/2016/02/01/discrete-laplace-transform/

[Syed Adeel]

Thankyou Boss