average of one column of many text file

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Tanmoyee Bhattacharya 2016-5-20

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https://ww2.mathworks.cn/matlabcentral/answers/285077-average-of-one-column-of-many-text-file

评论： Arashdeep Singh 2021-7-10

I have three hundrad text files and each have 4 columns.I have to do average of 3rd column of all the text files.It will come as a single column.How can we do this.

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Azzi Abdelmalek 2016-5-20

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KSSV 2016-5-20

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https://ww2.mathworks.cn/matlabcentral/answers/285077-average-of-one-column-of-many-text-file#answer_222834

在 MATLAB Online 中打开

txtfiles = dir '*.txt' ; % pick txt files in directory
Nfiles = length(txtfiles) ; % total number of files 
iwant = zeros(Nfiles,1) ;   % initialize the avg array
for i = 1:Nfiles            % loop for each file
data = importdata(txtfiles(i).name) ;   % load the data
iwant(i) = mean(data(:,3)) ;            % get the mean
end