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Loop through sub folders.

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Good day all,
I have 25 subfolder each contains some text files. I developed a loop that runs through the text files in a sub folder, extract some vaules from each text file and perform some calculations. Is there any way i can modify my code to run through all the the sub folders at the same time? I want the loop to execute my script (see the script below) for each sub folder and save the results ('Displacement') before proceeding to the next subfolder. So i am expeting to have Displacement1, Displacement2, ..Displacement25 as the final outcome.
x = []; y = []; z = [];
files = dir('*.xvi');
for k = 1:length(files);
fid = fopen(files(k).name,'r');
while ~feof(fid)
st = fgetl(fid);
if ~isempty(strfind(st,'CouchShiftLat'))
stread = textscan(st,'%s %f','Delimiter',';=');
x = [x; stread{2}(1)];
elseif ~isempty(strfind(st,'CouchShiftLong'))
stread = textscan(st,'%s %f','Delimiter',';=');
y = [y; stread{2}(1)];
elseif ~isempty(strfind(st,'CouchShiftHeight'))
stread = textscan(st,'%s %f','Delimiter',';=');
z = [z; stread{2}(1)];
end
end
fclose(fid);
end
Displacement=[x,y,z];

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Accepted Answer

Mohammad Sami
Mohammad Sami on 30 Jan 2020
Edited: Mohammad Sami on 30 Jan 2020
mainfolder = uigetdir;
subfolders = dir(mainfolder);
subfolders = subfolders([subfolders.isdir] & ~startsWith({subfolders.name},'.'));
for i = 1:length(subfolders)
x = []; y = []; z = [];
files = dir(fullfile(mainfolder,subfolders(i).name,'*.xvi'));
for k = 1:length(files);
fid = fopen(files(k).name,'r');
while ~feof(fid)
st = fgetl(fid);
if ~isempty(strfind(st,'CouchShiftLat'))
stread = textscan(st,'%s %f','Delimiter',';=');
x = [x; stread{2}(1)];
elseif ~isempty(strfind(st,'CouchShiftLong'))
stread = textscan(st,'%s %f','Delimiter',';=');
y = [y; stread{2}(1)];
elseif ~isempty(strfind(st,'CouchShiftHeight'))
stread = textscan(st,'%s %f','Delimiter',';=');
z = [z; stread{2}(1)];
end
end
fclose(fid);
end
Displacement=[x,y,z];
% save here
end

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Show 2 older comments
AUWAL ABUBAKAR
AUWAL ABUBAKAR on 30 Jan 2020
AlhamdulilLah. it works fine. Just one more thing...
I only got one output (displacement) which is for the last subfolder instead of for each sub folder.
thanks for your help.
Mohammad Sami
Mohammad Sami on 30 Jan 2020
yes, put this inside the subfolder loop.
Displacement=[x,y,z];
matfile = fullfile(mainfolder,subfolders(i).name,'output.mat');
save(matfile,'Displacement')
AUWAL ABUBAKAR
AUWAL ABUBAKAR on 30 Jan 2020
Thanks a million. it woked perfectly.
Wasssalam

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