Read multiple .CSV files with csvread using a loop

Question

Carlos_conde 2021-2-10

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/741797-read-multiple-csv-files-with-csvread-using-a-loop

评论： Carlos_conde 2021-2-10

采纳的回答： Stephen23

Dear All,

I hope that you may help me,

Say I have n files named "droplet.n.csv" where n goes from 0 to 100 ( I am attaching five .csv files)

Each file has two rows. I want to extract the second row of each file and save it in another file. So what I would end up having on MATLAB is a matrix with many rows as n there are (in this case 100)

Thanks in advance

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Answer 1

Stephen23 2021-2-10

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https://ww2.mathworks.cn/matlabcentral/answers/741797-read-multiple-csv-files-with-csvread-using-a-loop#answer_620367

编辑：Stephen23 2021-2-10

在 MATLAB Online 中打开

V = 0:4;
N = numel(V);
C = cell(1,N);
for k = 1:N
    F = sprintf('droplet.%d.csv',V(k));
    C{k} = readmatrix(F,'NumHeaderLines',1);
end
M = vertcat(C{:})
M = 5×14
         0         0         0   -0.0000   -0.0000   -0.0000    0.0000    0.0708         0         0         0    0.0130    0.0115    0.0117
    0.0000   -0.0000    0.0000   -0.0000   -0.0000   -0.0000   -0.0000    0.0202    0.0000   -0.0000    0.0000    0.0130    0.0115    0.0117
    0.0000    0.0000    0.0000   -0.0000   -0.0000    0.0000   -0.0000   -0.0035    0.0000    0.0000    0.0000    0.0152    0.0115    0.0128
    0.0000   -0.0000    0.0000    0.0000   -0.0000   -0.0000    0.0000    0.0118    0.0000   -0.0000    0.0000    0.0167    0.0115    0.0132
    0.0000   -0.0000    0.0000   -0.0000   -0.0000   -0.0000   -0.0000    0.0130    0.0000   -0.0000    0.0000    0.0177    0.0115    0.0134