Filename value extraction: code simplification

Being new to Matlab, it took me half a day to get my code to work at all, but now I'm wondering if it's possible to get it to work faster, in a better style and with less "detour" due to format-changing and such. It's a follow-up to a question I asked on Stack Overflow, but I find it to be more fitting to a forum like this here than S-O. Please tell me if you think it's better to stick to one platform ;)

What I want to do: I got files named abc123.xml, abc124.xml, abc133.xml etc. Now I just need the numerical value as a :,1 numerical array to be able to interactively select and process the data. This is what I got so far:

xml_filelist = dir('subfolder/*.xml');          % giving a :,1 struct with 5 fields where the first is the filename
xml_filelist = struct2table(xml_filelist);      % converting it to a :,5 table where the first is the filename
xml_filelist = table2cell(xml_filelist(:,1));   % converting the first column to a cell array to be able to regexp it
xml_num = regexp(xml_filelist, '(\d+)', 'once', 'tokens');      % extracting the numerical value
xml_num = cellfun(@(x)str2double(x), xml_num);  % converting it from string cell array to double values

This leaves me with an array like [123; 124; 133], which is what I need. Now is there any way to simplify the code above?

Answer 1

[Walter Roberson]

xml_filelist = dir('subfolder/*.xml');
xml_filenames = {xlm.filelist.name};
xml_num = str2double( regexp(xml_filenames, '\d+', 'match', 'once') );

[Andreas B]

the second line gives me the error

Undefined variable "xlm" or class "xlm.filelist.name".

It stays the same when I assume a typo and change it to xml.filelist.name. I might have added I'm using R2015b, as that might make a difference.

[Walter Roberson]

xml_filelist = dir('subfolder/*.xml');
xml_filenames = {xml_filelist.name};
xml_num = str2double( regexp(xml_filenames, '\d+', 'match', 'once') );

[Andreas B]

I feel very stupid for that one, sorry. Will be the first thing I try on monday, as I it's a company license.

[Andreas B]

Now it works like a charm.