How to import data for files that have 11,12,13,21,22,23,31,32,33 sequence?

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Ismail Qeshta 2017-11-11

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https://ww2.mathworks.cn/matlabcentral/answers/366398-how-to-import-data-for-files-that-have-11-12-13-21-22-23-31-32-33-sequence

评论： Ismail Qeshta 2017-11-11

Hi, I would like to import files from a directory. The files have the following sequence:

Data 11
Data 12
Data 13
Data 21
Data 22
Data 23
Data 31
Data 32
Data 33

I usually use the following general code for extracting a sequence of files:

numfiles = 3;
mydata = cell(1, numfiles);
for k = 1:numfiles;
    myfilename = sprintf('Drift.out', k);
    mydata{k} = importdata(myfilename);
end

Can anyone please advise me on how to modify it to suit the above files sequence?

Thank you very much. Regards, Ismail

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Answer 1

KSSV 2017-11-11

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https://ww2.mathworks.cn/matlabcentral/answers/366398-how-to-import-data-for-files-that-have-11-12-13-21-22-23-31-32-33-sequence#answer_290503

在 MATLAB Online 中打开

files = dir('*.out') ;  % get all files with extension out
N = length(files) ;   % toal number of files
% loop for each file
for i = 1:N
    filename = files(i).name ;
    % do what you want
end

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KSSV 2017-11-11

What ever the names may be......it will list all the files present in the folder with extension out.

Ismail Qeshta 2017-11-11

在 MATLAB Online 中打开

Thanks KSSV. I could not get the code right yet. I actually mean I need to identify the sequence of each file based on its name and permutation number in order to plot the data from the two files. I tried using this file, but I don't know what the thing that is wrong with it.

c = [1 2 3];
s = [1 2 3];
for i=1:3;
    for j=1:3;
b=importdata['react.out', ij];
a=importdata['Drift.out', ij];
plot(a(:,2),-sum(b(:,2:11),2));
x= a(:,2);
y= -sum(b(:,2:11),2);
end
end