read from multiple text file and store in a 3D array

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Damith 2014-6-17

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评论： dpb 2014-6-17

Hi,

I have 378 text files (0001.txt, 0002.txt, ....0378.txt). I can read each text file using the following code by chaning the file name each time and it works fine. But I want to read all text files using a for loop/using a code and store in a 3D array. I need to store in a 3D array is Eleven1,....upto Eleven378.

Can somebody suggest me a way to do in matlab?

filename = '0001.txt';
delimiterIn = ' ';
headerlinesIn = 1;
Eleven_ST1 = importdata(filename,delimiterIn,headerlinesIn);
% View data
for k = [1:4]
   head=(Eleven_ST1.textdata{1});
   Eleven1=(Eleven_ST1.data(:, k));
   Eleven1_YYRR=([Eleven_ST1.data(:,1) Eleven_ST1.data(:,4)]);
end

Thanks in advance.

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回答（1 个）

dpb 2014-6-17

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https://ww2.mathworks.cn/matlabcentral/answers/134777-read-from-multiple-text-file-and-store-in-a-3d-array#answer_141285

在 MATLAB Online 中打开

See the FAQ

http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F

I strongly recommend the dir solution.

If the data in each file are 2D, then preallocate the number of planes based on the result of dir (instead of hardcoding in 378 to make the script more generally useful) and then store in the plane as

data(:,:,ix)=[file_data1 file_data2];

where ix will be the loop over 1:length(d) and

d=dir('*.txt'); % the files to process directory structure