Read files from multiple folders

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Hi,
Lets say I have some 100 .dat files in each subfolder A, B , C , D that is placed inside the folder named Data. Here, I would like to perform operation in a one go, rather than running sperately for each subfolder. Is there a way to do this, does it requires parallel processing for this task ??
For e.g.
read data from subfolder A
for i = 1:1:100
some operation
end
read data from subfolder B
for i = 1:1:100
some operation
end

Accepted Answer

Image Analyst
Image Analyst on 13 Apr 2022
Use a fileDatastore:
topLevelFolder = pwd; % folder in which your images exists
filePattern = fullfile(topLevelFolder, '*.dat');
ds = fileDatastore(filePattern, 'ReadFcn', @readmatrix) % Creates a datastore for all images in your folder
allFileNames = {ds.Files{:}}'
for k = 1 : numel(allFileNames)
thisFileName = allFileNames{k};
fprintf('Processing %s.\n', thisFileName);
% Do something with it.
end
If you have the Parallel Processing Toolbox you can use parfor instead of for.
  3 Comments
Turbulence Analysis
Turbulence Analysis on 13 Apr 2022
It's working perfectly with two stars !!

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