My matlab can no longer import csv with struct by using dir

Question

Pai-Feng Teng 2022-4-4

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1688379-my-matlab-can-no-longer-import-csv-with-struct-by-using-dir

编辑： Stephen23 2022-4-4

I have to import 131 csv files for data analysis with matlab (version: Matlab 2022a). When i used the Matlab 2022a last Friday I have no problem to import it with dir function at all.

Here is the code that worked fine, until today:

dir ='C:\Users\User\Documents\PhD\2022winter\2_Stat_Downscaling\a2_b_HUC12_test\EA_LSTM\rrwhuc12\result\';
dir0 = [dir '0'];
S0 = dir(fullfile(dir0,'*.csv')); % create the struct file (133 x 1)
Table0 = zeros(2556,numel(S0),2); %create a table that I can save data from csv.
for K0 = 1:numel(S0)
F0 = fullfile(dir0,S0(K0).name);
T0 = readtable(F0);
Table0(:,K0,1)=table2array(T0(:,2));
Table0(:,K0,2)=table2array(T0(:,3));
end

However, after today, I found out that the identical code will give me this result after Line 3:

"Index exceeds the number of array elements. Index must not exceed 100."

In order to double-check, I tried the codes that worked in my past project and it gave me the same result. For unknown reasons, it now enforces Index to not exceed 100.

Why does that happen?

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Pai-Feng Teng 2022-4-4

Line 3 generated the error. Here is the full message.

Stephen23 2022-4-4

编辑：Stephen23 2022-4-4

在 MATLAB Online 中打开

"Here is the code that worked fine, until today: "

I doubt that.

As Fangjun Jiang correctly noted, you have shadowed the DIR function on the very first line of your code:

dir ='C:\Users\User\Documents\PhD\2022winter\2_Stat_Downscaling\a2_b_HUC12_test\EA_LSTM\rrwhuc12\result\';
^^^ This is the start of your problems.
dir0 = [dir '0'];
S0 = dir(fullfile(dir0,'*.csv'));
     ^^^ because now you cannot call DIR function here

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Answer 1

Fangjun Jiang 2022-4-4

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1688379-my-matlab-can-no-longer-import-csv-with-struct-by-using-dir#answer_934504

dir() is a function yet you use "dir" as a variable name on the first line. Use a different name.

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Jan 2022-4-4

在 MATLAB Online 中打开

In other words: Replace

dir ='C:\Users\User\Documents\PhD\2022winter\2_Stat_Downscaling\a2_b_HUC12_test\EA_LSTM\rrwhuc12\result\';
dir0 = [dir '0'];
S0 = dir(fullfile(dir0,'*.csv'));

by

folder  = ['C:\Users\User\Documents\PhD\2022winter\2_Stat_Downscaling\', ...
           'a2_b_HUC12_test\EA_LSTM\rrwhuc12\result\'];
folder0 = fullfile(folder, '0');
S0      = dir(fullfile(folder0, '*.csv'));