changing the name of multiple csv files in a folder

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C.G. 2021-1-15

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评论： Stephen23 2021-1-15

采纳的回答： Mathieu NOE

I have a folder containing 3000 csv files. All of these are named in the format: cor0.1 sc10 fc0.1_0.csv.

I want to change the name of all of these files to c0_1f0_1_0.csv.

Is there a way i can write a loop to do this for me?

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Mathieu NOE 2021-1-15

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hello

this is a first attempt

I prefered to create the renamed copies in a separate folder

also my code will probably need some upgrade as I don't know how the numberring inside your filenames can evolve among your 3000 files

d = dir('*.csv')
dir_out = [cd '\out']
for ci = 1:numel(d)
    filename = d(ci).name;
    
    ind_und = strfind(filename,'_'); % search underscores 
    ind_dot = strfind(filename,'.'); % search dots 
    ind_f = strfind(filename,'f');  % search "f" 
    
    new_filename = [filename(1) filename(ind_dot(1)-1) '_' filename(ind_dot(1)+1) filename(ind_f ),...
        filename(ind_dot(2)-1) '_' filename(ind_dot(2)+1) '_' filename(end-4:end)];
    
    copyfile(filename,fullfile(dir_out,new_filename));
    
end

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Mathieu NOE 2021-1-15

my pleasure !

Stephen23 2021-1-15

Rather than fragile indexing, it better to use fileparts to split the filename and file extension:

https://www.mathworks.com/help/matlab/ref/fileparts.html

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Matt Gaidica 2021-1-15

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编辑：Matt Gaidica 2021-1-15

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csvPath = '/path/to/files';
filelist = dir(fullfile(csvPath,'*.csv'));
for iFile = 1:numel(fileList)
    thisFile = fullfile(csvPath,fileList(iFile).name);
    movefile(thisFile, strrep(thisFile,'old','new'));
end

This is just psuedocode. I don't quite see how you're mapping the old filename to the new one, so I just placed a string replace function in the loop. If you need help on that piece, please post more details.

See:

https://www.mathworks.com/help/matlab/ref/movefile.html

https://www.mathworks.com/help/matlab/ref/strrep.html