Introduction - If you have any usage issues, please Google them yourself
Least squares fitting procedure, which is a set of interactive and command-style in one procedure. First of all, the procedure prompts you to enter data, if you enter the data correctly, then proceedings to continue. If you enter the x, y size of inconsistency, the program will prompt you to enter data incorrectly, and then the procedure to return to once again allow you to enter data. When you enter data correctly, the program will prompt you for some information,