MATLAB: Does dir(‘*.mat’) not list all of the .mat files in directory

dir

Hello,

I'm trying to create a structure file which lists all of the .mat files in my directory:

files = dir('*.mat')

This code returns a 4×1 structure, but I have 8 .mat files in the directory. All 8 of the .mat files are the same format (i.e. 3 variables per .mat file). Can anyone tell me why my other .mat files are not being listed in the struct file?

Thanks, Dan

Best Answer

Are you sure about those files being in there? Does WHAT see them (type: what) in there?

D = dir;
length(regexp([D(:).name],'\.mat'))  % What does this say

Related Solutions

MATLAB: How to load files identified by the matlab function of “dir”

See the second code example in the FAQ: http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F

A smiple modification gives you the answer:

myFolder = 'C:\users\leon\documents'; % or whatever.
if ~isdir(myFolder)
  errorMessage = sprintf('Error: The following folder does not exist:\n%s', myFolder);
  uiwait(warndlg(errorMessage));
  return;
end
filePattern = fullfile(myFolder, '*.mat');
matFiles = dir(filePattern);
for k = 1:length(matFiles)
  baseFileName = matFiles(k).name;
  fullFileName = fullfile(myFolder, baseFileName);
  fprintf(1, 'Now reading %s\n', fullFileName);
  storedStructure = load(fullFileName);
  % Now do whatever you need to do with the structure you recalled.
end

MATLAB: Preserve spaces when using fprintf with strcat to show variables, spaces and strings on screen to user

C = strcat('HURRAH!! File',{''},B,' does exist.\n')

This creates a cell string. Then fprintf must fail, because it accepts strings only. Use this:

fprintf('HURRAH!! File %s does exist.\n', B);

This is safer, because the file name can contain control characters like '\n'.

Note:

natsort(theMATfiles)

is useless, because the output is not caught. Do you mean:

theMATfiles = natsort(theMATfiles);

Simplification:

    d = dir;
    d1=struct2cell(d);
    d2=d1(1,:);
    d3=cellfun(@(x) regexp(x,'.mat'),d2,'uni',false);
    d4=find(~cellfun('isempty', d3));

Easier:

FileDir  = dir('*.mat');
FileName = {FileDir.name};

Best Answer

Related Solutions

MATLAB: How to load files identified by the matlab function of “dir”

MATLAB: Preserve spaces when using fprintf with strcat to show variables, spaces and strings on screen to user

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