How to return files with a specific extension using 'dir'?

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John
John on 11 Aug 2014
Commented: Stephen on 17 Aug 2021
The command
dir *.bmp
will print to the command window the names of all files in the current directory ending with the extension .bmp. I know the following is not valid MATLAB syntax, but is there a command that would be the equivalent of
fileList = dir *.bmp;
I want to create a list of all files ending with a specific extension using minimal code. Currently I have the following:
files = dir;
L = length(files);
index = false(1, L);
for k = 1:L
M = length(files(k).name);
if M > 4 && strcmp(files(k).name(M-3:M), '.bmp')
index(k) = true;
end
end
images = files(index);
There must be a simpler way. Thank you in advance for any comments.

Accepted Answer

Image Analyst
Image Analyst on 11 Aug 2014
Try
fileList = dir('*.bmp');
Also, see the FAQ: http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F, particulalry the second option.
  3 Comments
Image Analyst
Image Analyst on 29 Apr 2020
True. But I don't think it's wise to have a folder with the name that a single image typically has. Virtually always, files the end in .bmp are image files, not folders.

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More Answers (1)

Tron
Tron on 27 Apr 2018
Old question, but I found another useful way of doing this. If you have a specific directory you want to search in, you can use a combination of dir and fullfile.
Try
folder = uigetdir();
fileList = dir(fullfile(folder, '*.bmp'));
  3 Comments

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