Dir function with no file extension

Dear communtiy.

I am using a script with the dir function as shown below but my question is I do not know what the data type of my file is. It has no description as ' data1.doc' It is just named as 'data1' and this continues to 'data40'. I have put several other files in the folder and it works. But it doesn't show the files that I want.

I have searched the community with file processing with no extension but coudn't find any.

I hope you guys can help me out

matFiles = dir('*.') ; % open certain files in the folder.%

N = length(matFiles) ;

for i = 1:N

load(matFiles(i).name) ; %

frequency = data(:,1);

zabsolute = data(:,2);

degree = data(:,3);

x= frequency * 1000; %% frequency is given in KHz multiply with 1000

y1 = zabsolute .* cosd(degree); %% formula to calculate the imaginair component of impedance

y2 = zabsolute .* sind(degree); %% formula to calculate the real component of impedance

figure(i)

subplot(2,1,1);

plot(x,y1),

title ( ' Resistance ' );

xlabel ( ' Frequency (Hz)');

ylabel ( ' Re Z');

subplot (2,1,2);

plot (x,y2);

title ( ' Reactance' );

xlabel ( ' Frequency (Hz)');

ylabel ( ' Img Z')

end

[Stephen23]

"It has no description as ' data1.doc' It is just named as 'data1' and this continues to 'data40'."

If you are using MS Windows, have you turned off the folder setting which hides known file extensions?

https://www.mathworks.com/matlabcentral/answers/628498-reading-a-file-name-from-a-list-of-files-in-a-text-file-line-by-line-and-open-the-files-one-at-a-tim#comment_1091898

Many MS Windows users are tricked by this awful, counter-helpful, badly-thought-out default setting, because they think that their files have no file extensions, whereas in fact Windows just hides them.

Answer 1

[Stephen23]

Try specifying the fixed part of the filename:

S = dir('Data*')

and/or removing folder from the output:

S = dir('*');
S = S(~[S.isdir]);

[Bayram Akpinar]

Thank you Stephen !