MATLAB: How to select the maximum number in the filename

cell arraysfilename

I really would appreciate if anyone could solve my problem. I have
   net1_0.2327.mat
      net1_0.3425.mat
      net2_0.8765.mat 
      net2_0.6754.mat ,......to net50_0.87654.mat net50_0.3456.mat
I would like to get these net1_0.3425.mat net2_0.8765.mat ,…. the max of each net1 to net net50(comparing net1 with net1 and net2 with net2 and so on) I used the script
    dinfo = dir('net*.mat');        
        filenames = {dinfo.name};
        parts = regexp(filenames, '_', 'split');
    part2 = cellfun(@(C) C{2}, parts, 'Uniform',0);
    parts3 = regexp(part2, '.mat', 'split');% to remove mat extension
    val2 = str2double(parts3)% I get NaN instead of numbers!
Thanks in advance for your help.

Best Answer

dinfo = dir('net*.mat');        
filenames = {dinfo.name};
filenumstr = regexprep(filenames, {'^[^_]+_', '\.mat$'}, {'', ''});
val2 = str2double(filenumstr);
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