count the # of rows of CSV files in a folder

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alpedhuez 2022-6-25

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https://ww2.mathworks.cn/matlabcentral/answers/1748155-count-the-of-rows-of-csv-files-in-a-folder

评论： Voss 2022-6-25

采纳的回答： Voss

I have a bunch of CSV files in a folder. I understand that I can use

https://www.mathworks.com/matlabcentral/answers/492801-how-do-i-count-the-number-of-rows-in-a-csv-file

to count a number of rows of each file. Then how can one write a loop to read all csv files in a folder to calculate the sum of rows of CSV fiels in a folder?

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Voss 2022-6-25

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https://ww2.mathworks.cn/matlabcentral/answers/1748155-count-the-of-rows-of-csv-files-in-a-folder#answer_993555

在 MATLAB Online 中打开

your_folder = 'C:\path\to\folder';
files = dir(fullfile(your_folder,'*.csv'));
fullFileNames = fullfile(your_folder,{files.name});
numRowsTotal = 0;
for ii = 1:numel(files)
    datatable = readtable(fullFileNames{ii}, 'ReadVariableNames', false);  %or true if there is a header
    numRowsTotal = numRowsTotal + height(datatable);
end