read all text files in a directory

Hi,

I' like the code to read all the files in a directory, applying it manually it would have been:

load textfile1.txt
load textfile2.txt
load textfile3.txt
...

Thank you

[Stephen23]

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

Use READMATRIX rather than LOAD.

If using DIR you might need to download this too:

https://www.mathworks.com/matlabcentral/fileexchange/47434-natural-order-filename-sort

Answer 1

[Sajid Afaque]

try to use the below general approach

data_files=dir_listing(datapath,'*.txt') %reads all text files at the location specified by datapath
for e=1:numel(data_files)
    %read the data from individual files
     fid=fopen(fullfile(datapath,data_files{e}));
     data_1=textscan(fid,'%s','delimiter','\n');
     fclose(fid);
    %then deal however you want to treat the data   
end

[Sajid Afaque]

@Shulamit Nussboim was it helpful ?, if yes please do accept answer as it would help other people in the community

[Shulamit Nussboim]

It read the directory files but something is wrong and not opening the files.

[Walter Roberson]

you need *.txt not .txt$

[Shulamit Nussboim]

OK, thank you both so much!

[Sajid Afaque]

yeah , i overlooked it , corrected now. @Shulamit Nussboim please do accept the answer by clicking on "accept answer", if it has solved your problem

[Shulamit Nussboim]

What is 'dir_listing' in your code?

[Walter Roberson]

function files = dir_listing(folder, spec)
 dinfo = dir(fullfile(folder, spec)) ;
 files = {dinfo.name};
end

[Sajid Afaque]

Thanks walter. dir_listing would be a seperate function to list the names of all the files of particular format(here text files) from a specified directory

Answer 2

[Image Analyst]

This is a FAQ, so see robust and general code snippets in the FAQ:

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