MATLAB Answers

Import text files from multiple folders

31 views (last 30 days)
Madison Lowe
Madison Lowe on 22 Mar 2018
Answered: Jan on 22 Mar 2018
I am trying to import data from multiple text files spread out between multiple folders. In this example of a previous question, what could I do to grab data from every file in each folder, rather than just one particular file?
% Path of the main folder : Rotation
yourpath = 'H:\Inspection ProjectData\rotation1';
% Get all the subfolders
ContentInFold = dir(yourpath);
SubFold = ContentInFold([ContentInFold.isdir]); % keep only the directories
% Loop on each folder
MyData = [];
for i = 3:length(SubFold) % start at 3 to skip . and ..
filetoread = fullfile(yourpath,SubFold(i).name,'fx.txt'); % <- this is the "fx.txt" file of the ith subfolders
% then type your code to read the text files and store in one variable
fileID = fopen(filetoread);
MyData{end+1} = textscan(fileID,'%s\n'); % the format depends of your files
fclose(fileID);
end
  1 Comment
Jan
Jan on 22 Mar 2018
How are the files recognize, which you want to process? Do all files have the same name?

Sign in to comment.

Answers (1)

Jan
Jan on 22 Mar 2018
If all files are called "fx.txt" and you are using a Matlab version >= R2016b:
FileList = fullfile(yourpath, '**', 'fx.txt');
for iFile = 1:numel(FileList)
filetoread = fullfile(FileList(iFile).folder, FileList(iFile).name);
...
end
Note: It is not documented, that '.' and '..' are the first two folders replied by dir. This might change with the operating system and file system. Prefer a ismember(Name, {'.', '..'}.

Community Treasure Hunt

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

Start Hunting!