't_tide' How to fill in an input value of the function

I have downloaded the entire t_ tide function, 'num' as shown in the figure, has 720 numbers. each data has a 1/6 hour interval. I just want to know the amplitude and phase of the four constituent tides，but the program always reports errors:the function or variable 'hanning' is not recognized，program error in line 1000.please help me!!!!!!

Answer 1

[Image Analyst]

Do you see this:

>> which -all hanning

C:\Program Files\MATLAB\R2022b\toolbox\signal\signal\hanning.m

[ke]

no，it told me that 'hanning' was not found

[ke]

But I downloaded the whole ‘t_tide' function

[Stephen23]

"But I downloaded the whole ‘t_tide' function"

What you downloaded is (probably) irrelevant.

Do you have the Signal Processing toolbox installed and a valid license for it?

[ke]

........I don't seem to have installed it. What can I do？？

[Stephen23]

"What can I do"

Either:

1- Install it and get a license:

https://www.mathworks.com/products/signal.html

2- write your own or obtain a function with the same functionality (e.g. check File Exchange).