can not find a file list with fonction ( dir)

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ChihabEddine CHIHEB
编辑： Stephen23 2023-3-29
hello
I used a function (dir) to get a list of wav files, but it returns an empty list
Folder = 'the folder which contain files';
List= dir([folder '*.wav']);
Why the list is empty?
thank you
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ChihabEddine CHIHEB
ChihabEddine CHIHEB 2023-3-28
thank you , it was it
list = dir([folder ,'/*.wav']);
Stephen23
Stephen23 2023-3-28
Best avoided. Using FULLFILE is more robust (e.g. it will take into acount if the path already has a trailing path separator character, which your code does not do). The best approach by far is to use FULLFILE. You should use FULLFILE.

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Cris LaPierre
Cris LaPierre 2023-3-27
Variables in MATLAB are case sensitive. So Folder is not the same as folder. You define Folder, but then use folder in your dir command.
If that is just a typo here, then the next most likely reason is that you have forgotten to include backslash (or forward slash, depending on your system) at the end of your folder path. A good way to avoid this is by using fullfile to build your path. Here's a simple example using a relative folder path.
Folder = '.\MATLAB Answers'
dir(fullfile(Folder, '*.wav'))
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Cris LaPierre
Cris LaPierre 2023-3-28
编辑：Cris LaPierre 2023-3-28
Use the Copy option from my post rather than typing the code yourself.
You are erroneously including square brackets "[]", which is preventing fullfile from doing its thing.
dir(fullfile(folder,'*.wav'));
Stephen23
Stephen23 2023-3-28
编辑：Stephen23 2023-3-29
@ChihabEddine CHIHEB: compare:
dir(fullfile(Folder, '*.wav')) % the correct code, as Chris LaPierre showed you.
dir(fullfile([folder ,'*.wav'])); % your code, with square brackets.
% ^ ^ why do you keep adding these?

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