MATLAB: Function M-Files Help

function m-files

I am a first time MATLAB user and to be honest, am really struggling. So if anyone could help break this down for me into small, easy steps, it would be very appreciated.

I am trying to create a function m-file. But before I went to the specific problem, I used a test code I found to get the hang of what I was supposed to be doing. (The example was found online and copied down to test).

This is my code:

     function  y  =  dude(x)
     y = x.^2 + cos(x);

However, MATLAB is telling me there is an invalid statement. It is the exact same code as the example and there are no warnings found in the program. Is there something that I am overlooking?

Best Answer

your code is fine, maybe you did'nt call the function correctly

example, to call your function, go to matlab command, then

 y = dude(4)

%or

y=dude([1 4 5])

Related Solutions

MATLAB: Saving of m-files

One possibility is to use code sections. Surround sections of code with "%%" like this

% This code is in one cell
x = 5
% This code is in the next cell

x = 6
% This code is in the next cell
x = 7

Then, in the editor,click anywhere in that section, then right-click and select "Evaluate this section". (There is also a keyboard shortcut.) It will evaluate your edited code, but not save it.

You can surround all of your code with %% ... %%, and run the whole code that way.

MATLAB: Combining multiple M-files

Simply call them one right after the other

>> File1,File2,File3

EDIT Updated in response to an email from Sherif...

I looked at the files, found here for anyone else who is interested. These are scripts, and horribly named at that. The first thing you have to do is rename them so that the number is at the end of the name, not the beginning, as MATLAB doesn't recognize names like 1myfile. Change it to myfile1.

Then, looking at the code, we find horrific coding practices, not the least of which is growing huge arrays in FOR loops. Thus the files are very slow. Finally, the second file (or what we can only guess is the second file by the 2) calls a function AWGN, which I don't have. It turns out that this file is part of the communications toolbox, which is not listed as a requirement (go figure). If I had this file, I think the code would run.

So, if you have the communications toolbox, rename the files as I did, then call them one after the other. Though judging by the terrible coding practices, I would not guarantee any outcome whatsoever.

Best Answer

Related Solutions

MATLAB: Saving of m-files

MATLAB: Combining multiple M-files

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