MATLAB: How to cd to to different directories with a changing name in a for loop

Question

As title

If I have the following directories, and I want to read data under these paths

./data_1/temp.txt

./data_2/temp.txt

./data_3/temp.txt

for i=1:3
cd ./data_$i
j(i)=dlmread('temp.txt');
cd ..
end

How can I make it happens?

Thank you

Answer 1

newFolder = sprintf('./data_%d', i);
cd(newFolder);

However, in my opinion, you're better off just constructing the full file name with fileparts() and fullfile() than changing the directory. I'd leave the directory alone and just read in the file giving dlmread the full filename (folder + base filename + extension).

fullFileName = sprintf('./data_%d/temp.txt',i);
j{i} = dlmread(fullFileName);