Global Fitting, also called Global Analysis, allows you to fit multiple data sets in a single curve fit. With Igor Pro®'s Global Fit package

• assign a different fit function to each data set.
• link fit coefficients arbitrarily.
• apply different weighting for each data set.
• apply constraints on fit coefficients, whether linked or unlinked.
• select subsets of points to be fit from each data set.
• save a global fit setup so that you can re-load it later.