I want the following code to loop through multiple folders instead of having to open each folder individually so that I can do batch file processing.

classdef SEdataAPPv1_01_Brooktrout < matlab.ui.componentcontainer.ComponentContainer

    % Properties that correspond to underlying components
    properties (Access = private, Transient, NonCopyable)
        GridLayout                  matlab.ui.container.GridLayout
        ASEDATAREDUCTIONLabel       matlab.ui.control.Label
        Version101Label             matlab.ui.control.Label
        Image                       matlab.ui.control.Image
        PlotSaveNameEditField       matlab.ui.control.EditField
        PlotSaveNameEditFieldLabel  matlab.ui.control.Label
        TestPointLocationEditField  matlab.ui.control.EditField
        TestPointLocationEditFieldLabel  matlab.ui.control.Label
        StartButton                 matlab.ui.control.Button
    end

    % Callbacks that handle component events
    methods (Access = private)

        % Value changed function: TestPointLocationEditField
        function TestPointLocationEditFieldValueChanged(comp, event)
            valueTP = comp.TestPointLocationEditField.Value;
            
        end

        % Value changed function: PlotSaveNameEditField
        function PlotSaveNameEditFieldValueChanged(comp, event)
            valuePS = comp.PlotSaveNameEditField.Value;
            
        end

        % Button pushed function: StartButton
        function StartButtonPushed(comp, event)
% This code takes RAW SE data, turns the files into text (.txt) files and
% then combines the HIGH, MID, and LOW frequency into one text file which
% can be then multi-selected and those selected files will be put onto a
% plot.

% Enter the directory to search
directory = uigetdir('*',"Select Folder With Files To Be Processed");

% List all items in the folder
fileList = dir(directory);

% Delete the subfolders from the list (i.e. only keep files)
fileList(vertcat(fileList.isdir)) = [];

figure

hold all

% Uses folder as title of plot
[ParentFolderPath] = fullfile(directory);
[~, ParentFolderName] = fileparts(ParentFolderPath);
title(ParentFolderName,'FontSize',20);

% Loop through each file, copy it and give new extension: .txt
for i = 1:numel(fileList)
    file = fullfile(directory, fileList(i).name);
    [tempDir, tempFile] = fileparts(file);
    status = copyfile(file, fullfile(tempDir, [tempFile, '.txt']));
end

% Combine HORIZONTAL text files

%location = input("location of test point: ","s");
fileName = comp.TestPointLocationEditField.Value + " HORZ NOM.txt";

dL = dir(fullfile(directory,'*HLF*NOM.txt'));     % salt to suit wildcard to match naming convention
dM = dir(fullfile(directory,'*HMF*NOM.txt'));
dH = dir(fullfile(directory,'*HHF*NOM.txt'));

for i = 1:numel(inf)                       % there must be same number Lo, Mid, High -- add error check first

  tD = readtable(fullfile(dL(i).folder,dL(i).name),'numheaderlines',6,'readvariablenames',1);
  tD = [tD;readtable(fullfile(dM(i).folder,dM(i).name),'numheaderlines',6,'readvariablenames',1)];
  tD = [tD;readtable(fullfile(dH(i).folder,dH(i).name),'numheaderlines',6,'readvariablenames',1)];
  
  % do whatever with each set here before going on...
  writetable(tD,fullfile(directory, fileName));

  plot(tD,"Frequency","SE","Color",'Blue',LineWidth=1.5);

end

% Combine VERTICAL text files

%location = input("location of test point: ","s");
fileName = comp.TestPointLocationEditField.Value + " VERT NOM.txt";

dL = dir(fullfile(directory,'*VLF*NOM.txt'));     % salt to suit wildcard to match naming convention
dM = dir(fullfile(directory,'*VMF*NOM.txt'));
dH = dir(fullfile(directory,'*VHF*NOM.txt'));

for i = 1:numel(inf)                       % there must be same number Lo, Mid, High -- add error check first

  tD = readtable(fullfile(dL(i).folder,dL(i).name),'numheaderlines',6,'readvariablenames',1);
  tD = [tD;readtable(fullfile(dM(i).folder,dM(i).name),'numheaderlines',6,'readvariablenames',1)];
  tD = [tD;readtable(fullfile(dH(i).folder,dH(i).name),'numheaderlines',6,'readvariablenames',1)];
  
  % do whatever with each set here before going on...
  writetable(tD,fullfile(directory, fileName))

  plot(tD,"Frequency","SE","Color",'Red',LineWidth=1.5);

end

% Combine AON text files and save as MR

%location = input("location of test point: ","s");
fileName = comp.TestPointLocationEditField.Value + " AON.txt";

dL = dir(fullfile(directory,'*HLF*AON.txt'));     % salt to suit wildcard to match naming convention
dM = dir(fullfile(directory,'*HMF*AON.txt'));
dH = dir(fullfile(directory,'*HHF*AON.txt'));

for i = 1:numel(inf)                       % there must be same number Lo, Mid, High -- add error check first

  tD = readtable(fullfile(dL(i).folder,dL(i).name),'numheaderlines',6,'readvariablenames',1);
  tD = [tD;readtable(fullfile(dM(i).folder,dM(i).name),'numheaderlines',6,'readvariablenames',1)];
  tD = [tD;readtable(fullfile(dH(i).folder,dH(i).name),'numheaderlines',6,'readvariablenames',1)];
  
  % do whatever with each set here before going on...
  writetable(tD,fullfile(directory, fileName))

  plot(tD,"Frequency","SE","Color",'#588146',LineWidth=1.5);

end

% Combine FTN text files and save as DR
%root = uigetdir();

%location = input("location of test point: ","s");
fileName = comp.TestPointLocationEditField.Value + " FTN.txt";

dL = dir(fullfile(directory,'*HLF*FTN.txt'));     % salt to suit wildcard to match naming convention
dM = dir(fullfile(directory,'*HMF*FTN.txt'));
dH = dir(fullfile(directory,'*HHF*FTN.txt'));

for i = 1:numel(inf)                       % there must be same number Lo, Mid, High -- add error check first

  tD = readtable(fullfile(dL(i).folder,dL(i).name),'numheaderlines',6,'readvariablenames',1);
  tD = [tD;readtable(fullfile(dM(i).folder,dM(i).name),'numheaderlines',6,'readvariablenames',1)];
  tD = [tD;readtable(fullfile(dH(i).folder,dH(i).name),'numheaderlines',6,'readvariablenames',1)];
  
  % do whatever with each set here before going on...
  writetable(tD,fullfile(directory, fileName))

  plot(tD,"Frequency","SE","Color",'#9f9f9f',LineWidth=1.5);

end

grid on

% Changing colors based on alphebetic order
newcolors = {'Blue','Red','#72a75b','#999999','#0003ff'};
colororder(newcolors);

% Sets pass/fail line
PFx = [10000 10000000 1000000000];
PFy = [20 80 80];

% Adds pass/fail line to plot
plot(PFx,PFy,'Color','Green','LineWidth',1.5);

% Changes legend location and removes pass/fail line from legend
Lgnd = legend('Location','northwest');
Lgnd = legend('Horizontal','Vertical','MR','DR','MIL-STD-188-125-1');
Lgnd.FontSize = 14;

% Labels both x and y axis
xlabel('Frequency (Hz)','FontSize',18,'FontWeight','bold');
ylabel('Shielding Effectivness (dB)','FontSize',18,'FontWeight','bold');

% Sets both axis scales 
set(gca,'XScale','log','ylim',[-10 200]);

% Removes the values on the plot *Comment out
% set(gca,'xticklabel',[],'yticklabel',[]); to add them back in*
% set(gca,'xticklabel',[],'yticklabel',[]);

% Sets grid lines to dashes, colors
set(gca,'gridlinestyle','--');

set(gca,'gridalpha',0.5);

set(gca,'GridColor','Black');

set(gca,'Color','#ececec');

set(gca,'Color','#ececec');


hold off

Answer 1

[Walter Roberson]

directory = uigetdir('*',"Select Folder With Files To Be Processed");

You could change that to

parentdirectory = uigetdir('*', 'Select Folder with folders inside it');
if isnumeric(parentdirectory); return; end   %user cancel

dinfo = dir(parentdirectory);
dinfo(~[dinfo.isdir]) = [];  %remove ordinary files
dinfo(ismember({dinfo.name}, {'.', '..'})) = [];  %remove . and ..

for K = 1 : length(dinfo)
    directory = fullfile(dinfo(K).folder, dinfo(K).name);
    %now all of the normal steps
end

[Tyler Lawson]

Is there anything else I need to take out? The change is only processing and plotting the last folder of the batch.

Thanks for your help!

[Image Analyst]

Try printing out what folder you're processing. I've added an fprintf() below. If you pick a folder that contains several subfolders within it, you'll find that it does process all the subfolders.

selectedFolder = uigetdir('*', 'Select Folder with folders inside it');
if isnumeric(selectedFolder); return; end   % User selected Cancel.

dinfo = dir(selectedFolder);
dinfo(~[dinfo.isdir]) = [];  % Remove ordinary non-folder files
dinfo(ismember({dinfo.name}, {'.', '..'})) = [];  % Remove . and ..

for k = 1 : length(dinfo)
    thisFolder = fullfile(dinfo(k).folder, dinfo(k).name);
    fprintf('Processing folder "%s".\n', thisFolder)
    % Now do all of the steps that you want to do with this folder.
end

[Walter Roberson]

Is the figure call inside the for K loop ? If so then are you getting one figure for every folder, or are you getting only one figure total? If you are getting one figure for every folder, then is the plot content the same for all of them?

I wonder if you did not fill in the place where I wrote

%now all of the normal steps

Inside that for K loop you should have all of the lines from

% List all items in the folder

through to the hold off

all inside the for K loop.

[Tyler Lawson]

Oh I am dumb and didn't see the other "end" when I copied over the code! Thanks so much it worked great!