save .TXT inside a specific folder

Hi. I am trying to save a .TXT file inside a certain folder. I am currently using this code, but something is not working....

new_folder = 'C:\Users\....\Folder A'
A = ; % matrix 200x3 double
save('file.txt', 'A')  % saves in the current folder
out = fullfile(new_folder, A);  % ??

Answer 1

[Mathieu NOE]

hello

try this

new_folder = 'C:\Users\....\Folder A'
A = ; % matrix 200x3 double
save(fullfile(new_folder, 'file.txt'), 'A')  % saves in the current folder

[Alberto Acri]

Okay, thank you @Mathieu NOE!

While if 'A' is just a number? I tried the code above but it doesn't work.

new_folder = 'C:\Users\....\Folder A'
A = 300;
save(fullfile(new_folder, 'file.txt'), 'A')  % saves in the current folder

[Mathieu NOE]

hello

if you use save and you want a readable txt file, you have to specify that you want ascii format.

Otherwise save will stick to the default format which is binary

%   FORMAT: Specify the format of the file, regardless of any specified
%   extension.  Use one of the following combinations:
%
%       '-mat'                        Binary MAT-file format (default).
%       '-ascii'                      8-digit ASCII format.
%       '-ascii', '-tabs'             Tab-delimited 8-digit ASCII format.
%       '-ascii', '-double'           16-digit ASCII format.
%       '-ascii', '-double', '-tabs'  Tab-delimited 16-digit ASCII format.


A = 300;
% A = randn(10,3);
save(fullfile(new_folder, 'file.txt'), 'A', '-ascii')  % saves in the new folder

FYI, now matlab also has writematrix for the same job (with more options)

writematrix(A, fullfile(new_folder, 'file.txt'))  % saves in the new folder