reading multiple files using importdata

Question

HolgSpre 2016-10-3

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/305578-reading-multiple-files-using-importdata

评论： HolgSpre 2016-10-4

Hi! Wanna import data from various .txt-files. And I am wondering why the code, I'm using, is not working. Probably I did a mistake in the format of entering the file name and directory. Anybody know what to do?

if true
pth = 'C:\Users\Marcus\Documents\MATLAB\data\'; % directory of the folder, where data files are saved
liste = dir(strcat(pth,'*.txt'));               % creates a list of all files in the folder directory pth
files = {liste.name};                           % creates a cell array with the name of the data file
for k = 1:numel(files);
  fullname = strcat(pth,files) ;
  data = importdata(fullname);
end

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Answer 1

michael 2016-10-3

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/305578-reading-multiple-files-using-importdata#answer_237156

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1. you have to do the dir command before the strcat

2. you can't do the stract on the whole list, you have to do it one by one

i.e

liste = dir('*.txt');
for i=1:length(liste)
   files=strcat(pth,'\',liste.name(i))
end

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HolgSpre 2016-10-4

在 MATLAB Online 中打开

Thank's for the help so far! I'm sorry that I did not specify in my question that the matlab-file will not be saved in the same folder as the data files. That's why I used

liste = dir(strcat(pth,'*.txt'));

unfortunately

liste = dir('*.txt');

is not working in that case...Any other ideas?

HolgSpre 2016-10-4

在 MATLAB Online 中打开

Finally it worked with:

pth = 'C:\Users\Marcus\Documents\MyDataFolder\';
liste = dir(strcat(pth,'*.txt'));
files = {liste.name};
for k = 1:numel(files);
  file{k} = strcat(pth,files{k});
  data{k} = importdata(file{k},' ',6);
end