MATLAB: Exporting data from for loop into text file

export

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!

Best Answer

"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
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