How to read data from different text file in a loop, save in a matrix and plot??

Hello,

For example I have different data file named data1.txt, data2.txt, data3.txt... etc. Now I want to read the data from each text file one by one using a loop and save them in a matrix and then plot. I'm out of my depth here.

Any help would be very much appreciated. Thanks..!!

Answer 1

[KSSV]

A regular google will give you ton's of sites. This topic is discussed to death in mathworks.

dinfo = dir('*.txt');  % get the text files from folder 
for K = 1 : length(dinfo)
  thisfilename = dinfo(K).name;  %just the name
    %load this file 
    % thisdata = load(thisfilename); 
end

plotting, reading the file depends on how your text file is.

Answer 2

[Stephen23]

If you want to import the files in alphanumeric order than you could download my FEX submission natsortfiles, and use the examples to base your code on:

P = 'C:\Test'; % directory path
S = dir(fullfile(P,'data*.txt'));
S = natsortfiles(S);
for k = 1:numel(S)
    F = fullfile(P,S(k).name)
    ... your code here
end