Exporting data from for loop into text file

Currently I have a for loop running and I'm trying to export the data from the for loop into a text file. I tried the following but it gives me all the data in a row:

x = (1:size(BOLD,1))./1.16E6;
y = BOLD;
xy = [x(:), y(:)];
dlmwrite('YourOutputFile.txt', xy, 'delimiter', ',');

(BOLD is the variable that I plotted which I need the numerical data for)

Is there a way to export the data in a way so that it gives me all the data sets in separate files (one file per graph produced)?

Thank you in advance!

Answer 1

[per isakson]

"gives me all the data in a row:" This script produces two columns

%%
BOLD = reshape( (1:6), [],1 );
x = (1:size(BOLD,1))./1.16E6;
y = BOLD;
xy = [x(:),y(:)];
%%
dlmwrite('d:\tmp\YourOutputFile.txt', xy, 'delimiter', ',');
%%
type('d:\tmp\YourOutputFile.txt')

outputs

8.6207e-07,1
1.7241e-06,2
2.5862e-06,3
3.4483e-06,4
4.3103e-06,5
5.1724e-06,6

"all the data sets in separate files" You need a new filename for each iteration of the loop

In response to comment:

"the data from the for loop into a text file"

To append new data to an existing file use

dlmwrite(filename,M,'-append')

See dlmwrite, (Not recommended) Write matrix to ASCII-delimited file. (If the file doesn't exist a new file is created.)

"all the data sets in separate files", "have a new filename for each iteration?"

My way

%%
for jj = 1 : 3
    name = sprintf( 'YourOutputFile_%04d.txt', jj );
    ffs  = fullfile( 'd:\tmp', name );
    dlmwrite( ffs, xy, 'delimiter',',' );
end

outputs

name =
    'YourOutputFile_0001.txt'
name =
    'YourOutputFile_0002.txt'
name =
    'YourOutputFile_0003.txt'

and there are others

[Hima Sheth]

Hi! I'm fairly new to MATLAB so how would I program it so that I have a new filename for each iteration?

[per isakson]

See my answer