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230. FITIT: Non-Linear Least-Squares Fit
by James H. Head, U. S. Air Force Academy, Colorado 80840 This program fits arbitrary non-linear theoretical functions by method of least squares. Given a set of measurements and given a theoretical expression which is a function of a few unknown parameters, the program simultaneously adjusts the parameters to determine the values which allow the function to best fit the data. The program documentation provides in detail the mathematical methods of the fitting procedure. In addition, an example is provided which demonstrates the fitting of certain experimental data to an exponential function. FORTRAN IV Lines of Code: 315 Recommended Citation: J. H. Head, QCPE 11, 230 (1973). |