load files from different folders in current folder

Hello

I have 3 different folders in the current folder (CBC, MHA, FJR). Each folder contains 12 mat files which have the same names in all folders. I have some code, that load and make some data processing on 12 files from one folder. Now I want to make a for loop that perform data processing in all three folders. I would like something like open the folder, make data processing and go back to current folder, then open another folder and so on. How can I do that?

Answer 1

[Walter Roberson]

projectdir = '.';   %or name of containing folder
foldinfo = dinfo(projectdir);
foldinfo(~[foldinfo.isfolder]) = [];  %get rid of non-folders
foldinfo(ismember({foldinfo.name}, {'.', '..'})) = [];  %get rid of . and .. folders
foldnames = fullfile(projectdir, {foldinfo.name});
numfold = length(foldnames);
for D = 1 : numfold
    thisfold = foldnames{D};
    dinfo = dir( fullfile(thisfold, '*.mat'));
    filenames = fullfile(thisfold, {dinfo.name});
    numfile = length(filenames);
    for F = 1 : numfile
        thisfile = filenames{F};
        file_struct = load(thisfile);
        %now extract variables from file_struct and process them
    end
end

[Anna Sergeeva]

Thank you for your answer :-) It helped a lot!

[Zakia wani]

can u plz mention where to edit this code to use it

[Walter Roberson]

@Zakia wani

Edit the line

projectdir = '.';   %or name of containing folder

to reflect the name of the parent directory that contains the subfolders.

Edit the line

    dinfo = dir( fullfile(thisfold, '*.mat'));

to change .mat to the appropriate extension for the files you are using.

Edit the line

    file_struct = load(thisfile);

to use whatever function is needed to read in those kinds of files. For example, perhaps readtable() or dicomread(), depending on what is stored in the file.

Edit the line

    %now extract variables from file_struct and process them

to be whatever code you need in order to process the file that you just read in.