Find string inside a cell array

Hi everyone!

I have a variable called filenames (cell array), which will store a random number of files, and PasteInfo2 (cell array), which stores all the files. I want to store the name of the file that matches between in thisfile and PasteInfo2 into the variable name. I already have this portion of code but still can't store the name of that file...

How can I do that?

PasteInfo2 = dir('D:\ABIDEdataset\Outputs\dparsf\nofilt_noglobal\rois_aal\All_Groups'); 
PasteInfo2_names = extractfield(PasteInfo2,'name');
NumberSubjs = length(filenames):
for i=1:NumberSubjs
    thisfile = filenames{i}; 
    if contains(thisfile,PasteInfo2_names)
        name = %name of file that is suppposed to be in thisfile;
    end
end

Thanks in advance!

Answer 1

[Stephen23]

Skip the loop and use ismember:

S = dir('D:\ABIDEdataset\Outputs\dparsf\nofilt_noglobal\rois_aal\All_Groups'); 
C = extractfield(S,'name');
X = ismember(filenames,C);
out = filenames(X)

[Iugo]

@Stephen Cobeldick thanks it's working!!

If I want to get the index position (of those files that are in both variables) in C variable, how should I proceed? Using find is enough?

[Image Analyst]

Try this:

[ia1, ib1] = ismember(filenames,C);
[ia2, ib2] = ismember(C, filenames);

Take whichever variable (ia1, ib1, ia2, ib2) gives you what you want.

[Iugo]

Thank you so much @Image Analyst!!

Answer 2

[Image Analyst]

Do you want to get the filenames something like this:

folder = 'D:\ABIDEdataset\Outputs\dparsf\nofilt_noglobal\rois_aal\All_Groups';
filePattern = fullfile(folder, '*.*');
% Get a list of all files in the folder.
PasteInfo2 = dir(filePattern)
% Extract just the filenames into its own cell array.
PasteInfo2_names = {PasteInfo2.name}
numberOfSubjects = length(PasteInfo2)
% Loop over all files.
for k = 1 : numberOfSubjects
	thisFullFileName = fullfile(folder, PasteInfo2_names{k});
	fprintf('Reading %s...\n', thisFullFileName);
% 	if contains(thisfile,PasteInfo2_names)
% 		name = %name of file that is suppposed to be in thisfile;
% 	end
end

[Iugo]

@Image Analyst thanks for your reply!

I think that what you wrote its not comparing if any file of PasteInfo2 (which stores all the names of the files) matches with the file in position i of filenames (which have a random portion of files from all the files that are also present in PasteInfo2)... or is something missing me?