convert a .mat to excel file

Hello, I have so many .mat files that I want to convert them to excel.

the first one (If I want to do one by one) name is A_Q1S1.mat.

What is the correct code for that?

[Dyuman Joshi]

(Assuming single data set in each file)

Read the data from the files and use writematrix to save the data in excel files accordingly.

Refer to this link to see how to read data from files in a sequence - https://in.mathworks.com/help/matlab/import_export/process-a-sequence-of-files.html

[Mathieu NOE]

hello

t would be nice to have a few files to know how the names are structured and what is the data inside (and what we need to retrieve)

a general approach could look like :

fileDir = pwd; % current directory (or specify which one is the working directory)

S = dir(fullfile(fileDir,'Data*.mat')); % get list of data files in directory

% optionnal robust file name sorting (if needed) 
S = natsortfiles(S); % sort file names into natural order , see : 
           %(https://fr.mathworks.com/matlabcentral/fileexchange/47434-natural-order-filename-sort)

for k = 1:length(S)
    filename = S(k).name % to actually show filenames are sorted (see command window)
    data = load( fullfile(fileDir, filename)); % output structure
    
    % store out_data in excel file 
    out_data = [data.Field. ....]; % here extract data from output structure 
    outfile = [filename(1:length(filename)-4) '.xlsx']; % output file name
    writematrix(out_data,fullfile(fileDir,outfile));
end

[mehra]

My .mat data names are like :

A_Q1S1

A_Q1S2

A_Q1S3

A_Q2S1

A_Q2S2

A_Q2S3

A_Q3S1

A_Q3S2

A_Q3S3

the same is for B and C.

Should I do something more for the whole files?

[Mathieu NOE]

ok , we don't need any special approach for loading your different mat files

but what we miss here is :

• what data you have stored in the mat files ,
• which elements you want to export to excel

if you could share a couple of mat files ,that would be great

Answer 1

[KSSV]

matFiles = dir('*.mat') ; 
N = length(matFiles) ;
T = table; 
for i  =1:N 
    load(matFiles(i).name) ; 
    T.(i) = val ;   % I assume each mat file has a variable "val" which is single column of same size 
end
writetable(T,'Test.xlsx')

[ARUNIMA KUMARI]

if the file have two columnrather than one then what to do

[ARUNIMA KUMARI]

This code is not working

[Stephen23]

"if the file have two columnrather than one then what to do"

https://www.mathworks.com/matlabcentral/answers/2101911-convert-a-mat-to-excel-file#comment_3118481

Of course using FILEPARTS rather than indexing into the filename.