Dear Ahmed,

Your question is very general since you haven't mentioned if you store the data in a matrix or some other form like lists.

1) Assuming that you have a matrix you can use writetable to write your data into a text file. Eg.: writetable(data,'outputfile.txt');

2) In that case, what you have is a double array instead of a table.

You can simply use csvwrite. Eg. csvwrite('outputfile.txt',magic(10));

Thank you dear Pavlos, I have a 2 column data, Temperature v time...Will your method work?

Thanks

Yes, it works.

Okay sir, thank you very much!