MATLAB: How to load multiple csv files and save them after converting into arff files

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Hello Friends,

I have several csv files, all stored in path 'C:\Users\Name\Documents\MATLAB\*.csv'. I want to loop one by one each file in order, convert them into arff files, and save them 'C:\Users\Name\Documents\MATLAB\*.arff'

Best Answer

datadir = 'C:\Users\Name\Documents\MATLAB';
d = dir(fullfile(datadir, '*.csv')); 
for i=1:length(d)
  filename = fullfile(datadir, d(i).name);

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MATLAB: Import csv files with sequential names

See FAQ: Import sequence of files . You cannot import "all files at once", but you import one after the other in a loop.

Folder  = 'C:\You\Folder';
DirList = dir(fullfile(Folder, '*.SAWS'));
for iFile = 1:numel(DirList)
   File = fullfile(Folder, DirList(iFile).Name);
   ... import the contents of the file and do what you want
end

MATLAB: Rename part of a file names in folder

Use regexprep

FileName = 'd10-raw-LT-4000_xyz123.txt';
FileName = regexprep(FileName,'raw-LT-','');
% Output
FileName =
    'd10-4000_xyz123.txt'

To save the file, try:

FileName = 'd10-raw-LT-4000_xyz123.txt';
NewFileName = regexprep(FileName,'raw-LT-','');
movefile(FileName,NewFileName,'f'); % renames the file

Note: you must be in the current folder, or use the entire file path in the FileName.

Best Answer

Related Solutions

MATLAB: Import csv files with sequential names

MATLAB: Rename part of a file names in folder

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