OriginLab Corporation - Data Analysis and Graphing Software - 2D graphs, 3D graphs, Contour Plots, Statistical Charts, Data Exploration, Statistics, Curve Fitting, Signal Processing, and Peak Analysis                      Fitting Multiple Peaks with Replicas in the Nonlinear Curve Fit Dialog

When fitting multiple peaks curves, you can fit your data to some of the built-in peak functions by replicating the function into several "copies", each of which may have different parameters. You can customize these settings in the Settings tab, Advance page, Fit Control: Replica branch:

Fitting Multiple Peaks with Replicas-1.png

Use this feature if you believe that your data to contain multiple peaks of the same sort (e.g. Lorentzian) but different centers and/or widths. If the function you have selected does not support replications, this branch is disabled.

See also: the Multiple Peak Fit tool.


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