Importing multiple files using a loop

Hello, i need to import multiple files and instead of writing them all down, i want to use a for loop for it.

These are the file names that i need to import, with 1 changing number in the file names.

A1=importdata('012_2023ef400t.txt');

A2=importdata('013_2023ef400t.txt');

A3=importdata('014_2023ef400t.txt');

this is the beginning, but i need to import 30 files.

Any suggestions?

Thank you!

[Stephen23]

https://www.mathworks.com/help/matlab/import_export/process-a-sequence-of-files.html

Answer 1

[Dyuman Joshi]

This is a general idea -

n=30;

%Preallocate
A = cell(1,n);

%Storing data
for k=1:n
    A{k} = importdata(sprintf('0%d_2023ef400t.txt', k+11));
end

Use indices to access the data in the stored array.

Depending upon the data you have, you can preallocate double or strings array instead of cell array.

I would suggest to use readmatrix or readtable instead of importdata().

[tjerk Verweij]

thanks!

apparently i had already a way to import the data correctly, i just did not look good enough for where the data was stored.

But my for loop was quite a bit bigger, so thanks for giving me a cleaner, smaller one :)

[Dyuman Joshi]

You are welcome!

Answer 2

[Image Analyst]

See the FAQ document for code snippets:

https://matlab.fandom.com/wiki/FAQ#How_can_I_process_a_sequence_of_files?