I'd like to create a loop that each time adds a new line to a .txt file.

I have a loop that generates a vector each time it loops through .

my_vector = [ 4, 5, 6,7];

I'd like to create a loop that each time adds the new vector to a .txt file.

Answer 1

[Walter Roberson]

fid = fopen('Output.txt', 'wt');

for K = 1 : 10000

    my_vector = randi(10,1,4);   %generate vector

    fprintf(fid, '%d %d %d %d\n', my_vector);   adds new vector to text file

end

fclose(fid);

[Sandy]

I guess the issue now is that my vector is actually just a string line and it doesn't seem to be working.

str = horzcat(date,' ',name,' ',lat,' ',long,' ', height)
        fName = 'test.txt';                     % A file name
        fid = fopen(fName,'w');                 % Open the file
        fprintf(fid,'%d %d %d %d\n',str);      % Print the string
        fclose(fid);                            % Close the file

[Walter Roberson]

Replace the fprintf() with

fprintf(fid, '%s\n', str );

But to check to be sure: are "date" and "lat" and "long" and "height" already strings, or are they numeric? If they are numeric then that is the wrong approach, and instead you should use this (presuming here that date and name are string already):

fprintf(fid, '%s %s %f %f %f\n', date, name, lat, long, height);

Answer 2

[Azzi Abdelmalek]

Look at this example

fid=fopen('file.txt','w')
for k=1:10
  my_vector=randi(4,1,4)
  fprintf(fid,'%f %f %f %f \r\n',my_vector)
end
fclose(fid)