how to select specific files

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Samaneh Arzpeima 2018-11-9

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https://ww2.mathworks.cn/matlabcentral/answers/428877-how-to-select-specific-files

评论： Samaneh Arzpeima 2018-11-12

Thank you for your time,this is a question from a Matlab beginer！

I have a folder(name Site) with two hundereds seventy one '.dat' files in it. They named as site●●▲▲.dat ●● starts from 01 up to 09 and ▲▲is from 01 upto 16. Now I need to select just sites with number 0901 to 0916.(i.e. site0901.dat site0902.dat ... site0916.dat) If i write

 idir = './Site/';
 Fault = [];
 files = dir([idir,'*09*.dat']);

I will get site0901.dat as well as site0109.dat

files = dir([idir,'09*.dat']);

wont extract any files.and

files = dir([idir,'*.dat']);

give me all the 271 files.

would you please teach me how to do this.

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Walter Roberson 2018-11-9

在 MATLAB Online 中打开

dir(fullfile(idir, 'site09*.dat'))

Samaneh Arzpeima 2018-11-11

编辑：Samaneh Arzpeima 2018-11-12

Thank you So Much.

got exactly what I needed.

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回答（1 个）

KSSV 2018-11-9

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/428877-how-to-select-specific-files#answer_346013

在 MATLAB Online 中打开

YOu can read all the files using:

allfiles = dir('*.dat') ;  % all dat files info 
files = [allfiles.name] ;   % this gives only file names

From files, you can get the index of your required files like below:

   files = {'site01.dat','site02.dat','site03.dat','site04.dat','site05.dat','site06.dat','site07.dat','site08.dat'.....
            'site09.dat','site10.dat'} ;
    num = cellfun(@(x) x(5:end-4),files,'UniformOutput',false) ;
    num = cellfun(@str2num,num) ;
    idx = num >5 & num < 9 ;
    files(idx)