How to load multiple .mat files into two different groups

Question

Joran Muller 2020-8-11

0
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https://ww2.mathworks.cn/matlabcentral/answers/578143-how-to-load-multiple-mat-files-into-two-different-groups

关闭： MATLAB Answer Bot 2021-8-20

I'm trying to make two groups out of the processed participants, one controle group (freqct) and one patient group (freqpt). I have an active path to the folder in which files are.

When I run this code I get the following error code:

Error using load
Cannot read file I:\preprocessed\Sub10.mat.
Error in Code2_1 (line 93)
    freqct = load(fullfilename); 
    
    

This is the code I have written. The last couple of hours I am bashing my head against the code and have tried numerous things, none worked.

clear all
sbjs          = dir('Sub*.mat');
for i         = 1:8
    freqct{i} = load(sbjs(i).name); 
end
clear i
for i         = 9:length(sbjs)
    n         = 1
    freqpt{n} = load(sbjs(i).name);
    n         = n+1;
end 

This is an overview of the files I want to load. In every file (Sub1.mat till Sub15.mat) there are the same files as in Sub10.mat (see below)

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Answer 1

KSSV 2020-8-11

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https://ww2.mathworks.cn/matlabcentral/answers/578143-how-to-load-multiple-mat-files-into-two-different-groups#answer_478141

USe this file exchange: https://www.mathworks.com/matlabcentral/fileexchange/47434-natural-order-filename-sort

First nine will be files Sub1,...Sub9 and the rest will be from Sub10.

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KSSV 2020-8-11

编辑：KSSV 2020-8-11

在 MATLAB Online 中打开

clear all
matfiles          = dir('Sub*.mat');
N = length(matfiles) ; 
data = cell(N,1) ; 
for i         = 1:N
    S = load(matfiles(i).name); 
    data{i} = S ; 
end

data is a cell where each cell has a structure. First 9 of data are files from 1 to 9 and than rest are from 10.

Joran Muller 2020-8-11

在 MATLAB Online 中打开

I get the same error code again, it can't read Sub10 or Sub2. I could not load Sub10 when there were already variables with the same name in the workspace, so I made it deleted everything. This also did not work. I have the feeling something goes wrong with placing sub02 into S, but what I don't know.

%%
matfiles = dir('Sub*.mat');
N = length(matfiles);
datas = cell(N,1);
%%
for i = 1:N
   S= load(matfiles(i).name);
   datas{i} = S;
   clear badcomp
   clear cfg
   clear comp
   clear data
   clear dataclean
   clear datads
   clear dataica
   clear fft_data_planar
   clear freq_combined
   clear planar
end 