MATLAB: “exist” command usage question

MATLABprogramming

Hello everyone. I wanted to know if it is possible to use a the "exist" command to check if a directory exists, nomater the username of the user eg. check=exist('C:\Users\<user_name>\—\—\—\somedit','dir') Is there a way to somehow get the username or something?

Best Answer

You can retrieve the username by using getenv('USERNAME') in MS Windows

I would suggest that you probably want to use getenv('HOMEPATH') as the base location for the directory to store files.

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MATLAB: Checking the existence of any file with a specific extension in a directory

Use dir instead. If you only want to know about the existence, then you could simply check if the returned structure is not empty:

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There is an inconsistency because "exist" is implemented by MathWorks and "h5info" is implemented on top of the third-party HDF5 library. MATLAB uses the Unicode versions of the Windows File System APIs which have a path limit of 32,767 characters. The HDF5 library uses non-Unicode Windows APIs that have the path limit of 260 characters.

In order to avoid this situation, always have the path length for any file less than 260 characters.

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