Read all files inside more than one directory

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Mini Me 2014-9-11

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https://ww2.mathworks.cn/matlabcentral/answers/154411-read-all-files-inside-more-than-one-directory

评论： Mini Me 2014-9-16

Hello, I have a data directory that has 2 more subdirectories which contain binary data in them. the binary data are chunks of 100Sa/s binary files of data taken over a period of time. I want to read all the data inside both directories and manipulate them. in addition, All data in each directory should construct a plot. so far this is what i have and I keep getting errors when i am trying to open the files.

    Files=dir('*.*');
    Arrayfile=[]
    for k=1:length(Files)
       FileNames=Files(k).name
       if Files(cnt).isdir, continue
        Arrayfile=[Arrayfile;FileNames]
        fid=fopen(filedir(cnt).name, 'rb', 'ieee-be')%file open inside
        timestamp = fread(fid,4,'uint32');
        dt = fread(fid,1,'float64');
        cols=fread(fid,1, 'uint32');%get the column size
        rows=fread(fid,1,'uint32');%get the row size
        data=fread(fid,[rows,cols],'double')% get the full data r x c
       end
      end

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Image Analyst 2014-9-11

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https://ww2.mathworks.cn/matlabcentral/answers/154411-read-all-files-inside-more-than-one-directory#answer_151394

recurse_subfolders.m

See my attached demo that recurses into all subdirectories and lists files.

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Image Analyst 2014-9-11

编辑：Image Analyst 2014-9-11

在 MATLAB Online 中打开

test3.m

As dpb says, just make minor modifications, like use '*.wav' instead of '*.png' and you should be almost ready to go. I assume you already know how to stitch your audio files together. Not sure why you couldn't do it, so I did it for you. It's extraordinarily well commented so I'm pretty sure you should be able to understand it. Here, use this (also attached below code as a m-file test3.m):

% Start with a folder and get a list of all subfolders.
% Finds and prints names of all wav files in 
% that folder and all of its subfolders.
clc;    % Clear the command window.
workspace;  % Make sure the workspace panel is showing.
format longg;
format compact;
% Define a starting folder.
startingFolder = cd;
% Ask user to confirm or change.
topLevelFolder = uigetdir(startingFolder);
if topLevelFolder == 0
  return;
end
% Get list of all subfolders.
allSubFolders = genpath(topLevelFolder);
% Parse into a cell array.
remain = allSubFolders;
listOfFolderNames = {};
while true
  [singleSubFolder, remain] = strtok(remain, ';');
  if isempty(singleSubFolder)
    break;
  end
  listOfFolderNames = [listOfFolderNames singleSubFolder];
end
numberOfFolders = length(listOfFolderNames)
% Process all wav files in all those folders.
for k = 1 : numberOfFolders
  % Get this folder and print it out.
  thisFolder = listOfFolderNames{k};
  fprintf('Processing folder %s\n', thisFolder);
  
  % Get wav files in this one folder.
  filePattern = sprintf('%s/*.wav', thisFolder);
  baseFileNames = dir(filePattern);
  numberOfFiles = length(baseFileNames);
  % Now we have a list of all files in this one folder.
  
  if numberOfFiles >= 1
    % Go through all those files in this folder.
    for f = 1 : numberOfFiles
      fullFileName = fullfile(thisFolder, baseFileNames(f).name);
      fprintf('     Processing wav file %s\n', fullFileName);
      % Now do your stitching together or whatever you want to do.
    end
  else
    fprintf('     Folder %s has no wav files in it.\n', thisFolder);
  end
end

Image Analyst 2014-9-13

在 MATLAB Online 中打开

use either comma or semicolon depending if you want to append horizontally or vertically.

allData{k} = [allData{k}, thisFData]; % Stitch side by side  
allData{k} = [allData{k}; thisFData]; % Stitch vertically

Mini Me 2014-9-16

Thanks @ Image Analyst so I decide to take the mean of allData{k}. Now the mean will be one value for each row. meaning a 1 x 8 matrix. I want to take each column of that matrix and feed inside a new array each time the loop read a folder of data files (k loop). meaning I want the average of all the files in folder one. take the 1st column and feed in an array, take the second and feed it in an other array. and so on. move on to the 2nd folder, it takes the 1st column and feed in the same array that contain the first column of the previous folder. then the same for the second folder and so on. If can help me it'd be much appreciated as I am stuck on this for a while now

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Read all files inside more than one directory

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Read all files inside more than one directory

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