MATLAB: How to select specific text files

text file

I have imported a bench of text file into MATLAB using

    list_files2load = dir(fullfile(directory1,'Mod1*));

But then in those files (here is an example: Mod1-A-00k.txt, Mod1-A-10k.txt, Mod1-A-30k.txt; Mod1-B-00k.txt, Mod1-B-10k.txt, Mod1-B-30k.txt), I would like to pick only the ones that end with '*00k.txt'

how could I do that?

Thanks

Best Answer

a={'Mod1-A-00k.txt', 'Mod1-A-10k.txt', 'Mod1-A-30k.txt', 'Mod1-B-00k.txt', 'Mod1-B-10k.txt', 'Mod1-B-30k.txt'}
idx=~cellfun(@isempty,regexp(a,'.+(?=00k.txt).+','match'))
b=a(idx)

%or

idx=~cellfun(@isempty,regexp(a,'.+(00k.txt)\>','match'))
b=a(idx)

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MATLAB: Create a loop using regexp

Nicolas - for sure you can add a loop as long as you know what to increment by at each iteration. If we assume an increment of 10 (given your pattern of 00,10,30) then we could wrap your above code in a for loop as

 for u=0:10:50
    % create the file pattern
    filePattern = sprintf('%02d',u);
    idx=~cellfun(@isempty,regexp(a,['.+(' filePattern 'k.txt)\>'],'match'));
    % if any value in logical array is one then save to b
    if any(idx)
        b=a(idx)
    end
 end

Running the above code with your a produces the following output

 b = 
    'Mod1-A-00k.txt'    'Mod1-B-00k.txt'
 b = 
    'Mod1-A-10k.txt'    'Mod1-B-10k.txt'
 b = 
    'Mod1-A-30k.txt'    'Mod1-B-30k.txt'

MATLAB: How to get the first 3 characters of each element in a cell to another cell

filename = {'CD2.2008052716-17hZCFPF.GY.txt', ...
            'GOM.2008052716-17hZCFPF.GY.txt', ...
            'GYA.2008052716-17hZCFPF.GY.txt'};
P = strtok(filename, '.')

Best Answer

Related Solutions

MATLAB: Create a loop using regexp

MATLAB: How to get the first 3 characters of each element in a cell to another cell

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