Unrecognized function or variable

Hello,

I'm trying to run the beginning of a script that was sent to me:

function [ FList ] = ReadFileNames(DataFolder)
DirContents=dir(DataFolder);
FList=[];

DataFolder is the name of the folder in which all my data is held. When I click the Run button I receive:

ReadFileNames(DataFolder)
Unrecognized function or variable 'DataFolder'.

And I'm not sure why?

Any help is much appreciated. Thank you.

[DGM]

Where is DataFolder defined? If you haven't defined it, you will need to do so.

[Kiran Yendamuri]

Hi DGM,

I defined DataFolder, but still receive an error message:

function [ FList ] = ReadFileNames(DataFolder)
 ↑
Error: Function definition are not supported in this context. Functions can only be created as local or
nested functions in code files.

Answer 1

[Voss]

Tell the program what your data folder is

DataFolder = 'C:\';
ReadFileNames(DataFolder)

ans =

     []

function [ FList ] = ReadFileNames(DataFolder)
DirContents=dir(DataFolder);
FList=[];
end

[Kiran Yendamuri]

Hello Benjamin,

After assigning a path to DataFolder and running the code, I receive this:

function [ FList ] = ReadFileNames(DataFolder)
 ↑
Error: Function definition are not supported in this context. Functions can only be created as local or
nested functions in code files.

[John D'Errico]

You are still trying to run your function, as if it was a script. You even called it a script, and said you are clicking the run button. This is a function.

[DGM]

If you're using a version older than R2016b, you can't have functions defined in a script. You didn't specify what version you're using, so I'll just throw that out there.

[Kiran Yendamuri]

I'm using R2021b. I appreciate your time in helping me out here.