how to solve "Undefined function" problem?

I am writing a code where i used melcepsta function and it worked fine for the first time. Later I closed Matlab completely and opened it 3 days later to run the same program, but it did not run and it gave me this error.. "Undefined function 'Melcepsta'". Before running the program after 3 days it asked whether to change the path of the .m file or add to the path.. I selected add to the path.. I have attached the .m and .fig file along. Please, any help will be appreciated.

[mohanish]

the files which I am working on are these

Answer 1

[OCDER]

Add the path where your missing function is to your Matlab working path. Read more here.

https://www.mathworks.com/help/matlab/matlab_env/what-is-the-matlab-search-path.html

[mohanish]

how to add the path?

[OCDER]

addpath('C:\User\MyUserName\MyMatlabFolder\MelcepstaFolder\')

something like that.

[mohanish]

i am not able to understand. Can you explain this in my code?

[OCDER]

Where is your missing melcepsta.m file located on your hard drive? You need to let Matlab know where to look for this file, and to do that, you use addpath. You do this OUTSIDE of your code, directly on the Matlab command prompt. Imagine if Record.m is located C:\MyFolder, and melcepsta.m is located in F:\MyHiddenFolder. Matlab will have no idea about where melcepsta.m is, so when Record.m in line 113 says

d = melcepsta(myRocording)

Matlab gets lost - Undefined function melcepsta. By using addpath, you tell Matlab "hey, search here for that file".

If you can't figure out how to use pathing, then place melcepsta.m in the same folder as your Record.m file.

addpath('C:\Folder_Where_Melcepsta_Is')

then run your GUI

Record

[mohanish]

Thank you so much Man! It worked. That was a stupid mistake!

[OCDER]

You're welcome!

Answer 2

[Wilbert Clarke]

J = 0.02;
b = 0.1;
K = 0.01;
R = 1.1;
L = 0.5;
numerator = K;
denominator = [J, b, K^2];
M = tf(numerator, denominator);
T = feedback(M, 1);
C = 1/s;
one_minus_T = 1 - T;
E_ss = limit(s * C * one_minus_T, s, 0)

[Stephen23]

What value do you expect s to have?