How to fix 'Error using contains First argument must be a string array, character vector, or cell array of character vectors.'

I am getting the error:

Error using contains First argument must be a string array, character vector, or cell array of character vectors.

Error in xlsxdatatostructurearray/getgastablelisting (line 17) TF1 = contains(Directory{d},FilePrefix,'IgnoreCase',true);

Error in xlsxdatatostructurearray (line 25) for l = 1:length(getgastablelisting(FilePrefix, DirectoryName, filetype))

please help.

This is the code that is giving the error.

    function [LookupTableFiles] = getgastablelisting(FilePrefix, DirectoryName, filetype)
        LookupTableFiles = {};
        Directory = dir(DirectoryName);
        Directory = struct2cell(Directory);
        for d = 1:length(Directory)
            TF1 = contains(Directory{d},FilePrefix,'IgnoreCase',true);
            TF = contains(Directory{d},filetype,'IgnoreCase',true);
            if (TF1 == 1) && (TF == 1) 
                LookupTableFiles = {LookupTableFiles Directory{d}};
            end
        end
    end

Answer 1

[Sugar Daddy]

There are 6 fields in structure i.e. name, folder, data, bytes, isdir and datenum

three of them are str and two of them are numbers

when you convert struct2cell it puts each fileld in a new cell giving you the size of 6xactual number of files or folders

so

Directory{1,d}

will give you file name and can work with contains

Directory{2,d}

will give you folder name and can work with contains