About NotDirectoryError (Caught "std::exception" Exception message is:)

Hello, I am using SPM8 with matlab. I have an error as below so that 'for' statement does not work.

Caught "std::exception" Exception message is: fl:filesystem:NotDirectoryError

Whenever I run the script, I also have "matlab syntax error cannot run as it appears" too.

I made simple scripts to remove unnecesarry files in each directory. There are subfolders named 's01', 's02' in the root directory. I wanted to remove unnecessary files whose name starts with 'main', 'p', 'ap', in each subfolders. I realized that this script always works for the "first" subfolders such as 's01', but it does not work for the "second (s02)" or ... subfolders. Could anyone advise me, please?

SN = {}; SN{end+1} = {'s01', 1:6}; SN{end+1} = {'s02', 1:6};

root_dir = '/home/data/PRES';

%% Deleting unnecessary files

for mm=1:size(SN, 2); aa=dir(fullfile(root_dir, SN{mm}{1}));

    for nn=1:size(aa,1)
        delete(fullfile(root_dir, SN{mm}{1}, aa(nn).name, 'main*'));
        delete(fullfile(root_dir, SN{mm}{1}, aa(nn).name, 'p*'));
        delete(fullfile(root_dir, SN{mm}{1}, aa(nn).name, 'ap*'));
    end
end

Answer 1

[Cedric]

In your calls to delete:

SN{mm}{1} is the folder name.

aa(nn).name is the file name.

so why are appending e.g. 'main*' ? You will get path/names like

 /home/data/PRES/s01/main_abc.txt/main*

which is not what you want. You should either use the pattern 'main*' when you build the call to DIR, e.g. (untested)

 SN       = {{'s01', 1:6}, {'s02', 1:6}} ;
 patterns = {'main*', 'p*', 'ap*'} ;
 root_dir = '/home/data/PRES' ;

 for dirId = 1 : numel( SN )
    dirPath = fullfile( root_dir, SN{dirId}{1} ) ;
    if ~exist( dirPath ),  continue ;  end

    for patId  = 1 : numel( patterns )
       content = dir( fullfile( dirPath, patterns{patId} )) ;
       for fileId = 3 : numel( content  )  % 1 is '.', 2 is '..'
          delete( content(fileId).name ) ;
       end
    end
 end

or loop over all files and match relevant files according to patterns.

[Yoonjung Lee]

Thank you. =)

[Cedric]

You're welcome! Please note that I probably updated my answer while you were writing your comment, so take the latest version.