Clear Filters
Clear Filters

Find string inside a cell array

5 views (last 30 days)
Iugo on 28 Mar 2021
Commented: Iugo on 28 Mar 2021
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;
Thanks in advance!

Accepted Answer

Stephen23 on 28 Mar 2021
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)
Image Analyst
Image Analyst on 28 Mar 2021
Try this:
[ia1, ib1] = ismember(filenames,C);
[ia2, ib2] = ismember(C, filenames);
Take whichever variable (ia1, ib1, ia2, ib2) gives you what you want.

Sign in to comment.

More Answers (1)

Image Analyst
Image Analyst on 28 Mar 2021
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 = {}
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
  1 Comment
Iugo on 28 Mar 2021
Edited: Iugo on 28 Mar 2021
@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?

Sign in to comment.


Find more on Data Type Identification in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!