standalone(EXE) textscan is not working well

Hello. I want to make simple code as standalone(EXE).

1. Read text file

2. Sorting them

3. Save them to mat, txt or csv

Reading textfile works well in matlab. but whenever i deploy this to standalone, reading textfile returns broken data.

I made standalone using (MATLAB-APPS-Application Compiler) with same code.

filename = dir('Measurement*.asc');
copyfile(filename.name, [filename.name(1:end-4) '.txt']);
filename = fullfile(pwd, [filename.name(1:end-4) '.txt']);

fid = fopen(filename, 'r+');
rawdata1 = textscan(fid, '%s', 'Delimiter', '\n', 'MultipleDelimsAsOne', 1, 'headerlines', 3, 'TextType', 'string');
fclose(fid);

rawdata2 = readmatrix(filename, 'Numheaderlines', 3, 'ConsecutiveDelimitersRule', 'join', 'delimiter', ' ', 'OutputType', 'string');

save('TEST.mat');

Both rawdata1 and rawdata2 returns broken data... please help me..

Answer 1

[Walter Roberson]

When you are using compiled executables, it is especially important to use fully qualified filenames everywhere.

filename = dir('Measurement*.asc');

No, you need to be specifying the directory name. See ctfroot or otherwise figure out where to read files from.

The default directory for files is not the user's "current" directory -- the program doesn't have any idea which directory is the "current" directory.

copyfile(filename.name, [filename.name(1:end-4) '.txt']);

Fully qualify!

oldname = fullfile(filename(1).folder, filename(1).name);
[olddir, basename] = fileparts(oldname);
newname = fullfile(olddir, [basename ".txt"]);
copyfile(oldname, newname);

[WoongLae Cho]

Thanks for help.

copying "Measurement_2.asc" to "Measurement_2.txt" works well even if i don't add specific path..

"standalone(EXE)" and "Measurement_2.asc" are in the same folder.

[Walter Roberson]

"standalone(EXE)" and "Measurement_2.asc" are in the same folder.

That does not matter. The default path of the executable will not be there.

[WoongLae Cho]

copyfile gives Measurement_2.txt properly..

I think the problem is Reading txt file using EXE returns wrong data...

[Walter Roberson]

Getting the file names wrong can cause the problems you are seeing.

It is not worth debugging any further until after the filenames have been fixed to use absolute file names.

[WoongLae Cho]

There is a part saving variables to file.

when i open it, the filename is fine, it is in the proper path.

and i tried below code to give EXE proper path. but getting same wrong textscan data.

if isdeployed

[status, result] = system('path');

installpath = char(regexpi(result, 'Path=(.*?);', 'tokens', 'once'));

else

installpath = pwd;

end

filename = dir('Measurement*.asc');

copyfile(fullfile(installpath, filename.name), [fullfile(installpath, filename.name(1:end-4)) '.txt']);

filename = fullfile(installpath, [filename.name(1:end-4) '.txt']);