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Load different mat files using for loop

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Hugo
Hugo on 19 Feb 2021
Commented: Hugo on 20 Feb 2021
Hello guys!! I'm trying to load several subjects from a folder, with the data of those subjects having different mat filenames.
What I have implemented at the moment is this:
DataLocation = 'D:\ABIDEdataset\Outputs\dparsf\nofilt_noglobal\rois_aal\Leuven';
FileType = fullfile(DataLocation, '*.mat');
dirFicheiroMat = dir(FileType);
number_subjects = length(dirFicheiroMat);
for i=1:number_subjects
baseFileName = fullfile(DataLocation, dirFicheiroMat(i).name);
lfp = load(baseFileName);
end
Where lfp variable will be used after, to compute some calculation for each subject iterated.
But the problem of this code lies in the fact that lfp will be a structure after each iteration, and I want that variable to store the "true" values of each subject, instead of a structure...
Can anyone give me any help in this?
Thanks in advance,
Hugo
  2 Comments
Hugo
Hugo on 20 Feb 2021
Sorry about that...
So basically in each folder I have several mat files, with these being respective to one subject, and they contain a 2D matrix (between each mat file the size can be different) with the values of fMRI BOLD time-series.
The names of these files are from this type "Leuven10050682roisaal, Leuven20050726roisaal" and so on.

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Accepted Answer

Stephen Cobeldick
Stephen Cobeldick on 20 Feb 2021
Assuming that each mat file contains exactly one variable of unknown name, then try this:
D = 'D:\ABIDEdataset\Outputs\dparsf\nofilt_noglobal\rois_aal\Leuven';
S = dir(fullfile(D,'*.mat'););
for k = 1:numel(S)
F = fullfile(D, S(k).name);
C = struct2cell(load(F));
S(k).data = C{1};
end
You can trivially access the file data using indexing, e.g. the second file:
S(2).data
If your mat files actually contain more than one variable then you will need to give us more information: how many, their names, etc.
  6 Comments
Hugo
Hugo on 20 Feb 2021
Thank you for your help @Stephen Cobeldick!!
I'll check those files.
Best regards,
Hugo

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