How do I remove all filenames from my cellarray with .m ending, if else how do I save those with .bmp?

I have saved all filenames in a cell array for a given folder however, I only want it to include the files with ending .bmp.

function filer = filnamn(katalog)
%Ger en cell med de filer som finns i sökta katalog.
    filer = dir(katalog);
    filer = {filer(~[filer.isdir]).name};
end

How would I go about doing this?

[Stephen23]

"How do I remove all filenames from my cellarray with .m ending, if else how do I save those with .bmp?"

Note that in general code files and data files should be stored separately. Keeping data files off the Search Path will improve MATLAB efficiency when changing directories or adding files.

[Geeniee]

I appreciate the response!

Answer 1

[KSSV]

idx = contains(filenames,'.bmp') ; 
filenames(idx)

[Geeniee]

Thanks for the response!

Answer 2

[Stephen23]

Change the DIR call to specify the file extension:

filer = dir(fullfile(katalog,'*.bmp'));

This is more efficient than getting the entire file content and then removing some names (e.g using contains).

[Geeniee]

this was perfect thank you!